I disagree entirely, YOU made a damn good video, you didn't rush it one bit, you gave me no less than 2 maby three more things to look at, and gunna save me hours on top of hours . Thank you . And 2 thumbs up.
I changed all my injectors, I knew they could be “cleaned” but didn’t know the screen came out, gonna go back and look at old ones to learn how that works. Great video 👍👍
Exactly,you need to back flush them?I have been servicing Injectors for 15 plus yrs using ultrasound and a flow bench to confirm the before and after diagnosis. On car chemical cleaners are little better than 'snake oil' and at best should be treated as such.Olefins in gasoline is the biggest problem with Injectors and cannot be removed completely by Injector cleaners.
I just had to do the same thing with number 7 fuel injector replaced it erase the codes and now I'm hoping and praying it doesn't come back on idle smoother haven't taken on the freeway or anything yet but I will a little bit later and it's video helped me out a whole lot, appreciate it
Dude this was great vid quick and to the point without a lot of useless info and back story. THIS WAS GREAT and has giving me some definitive direction to take with my 8th cylinder misfire on my 99 suburban. Sadly it is spider style injection. Lots of fun! Thanks again!!!!!
Currently have a cylinder 7&8 misfire and put a extension on the injectors and listened it barely makes any noise if it even does make noise compared to other injectors. Must be common like you said.
Excellent diagnostic/explanation. Same truck here, same code on #5. Will do coil/wire swap test first. Also spark plug swap. Maybe ohms resistance comparison on the plug wires too. My Elm327 program not have single injector fire control so I thought rig an extra injector plug with 12vDC & momentary switch. Test injector for electric function(click sound) and fuel pressure change when tapping the switch. Use this rig to intermittently open removed injector valve for cleaning too. One important thing is depressurize fuel rail before disconnecting by removing fuel pump relay from fuse box then run engine until it dies.
Look for something like this . To test pressure drop on injectors to see if all spray the same amount of fuel . a pound off can make it run different . ALLOSUN Fuel Injector Tester Cleaner & Adapter DIY Cleaning Tools Kit Set (Fuel Injector Tester + Adapter)
Nice 👍 I noticed it looked like that truck still had the factory heater hose quick connectors to the heater core. The light coloured one on my truck broke right off, well I have new hoses with new quick connectors.
Thanks for a great diagnose I tried all typical solutions coil,sparkplug,wires etc. Having a problem with my number 8 cylinder 5.3 liter 07 tahoe I will try cleaning the fuel injector wish me luck thanks again for your video.
07 is prob a DOD engine . They have a lot of issues . A lot of times a solenoid leaks in the valley pan cover and that makes the lifter fail . Sometimes a pin in the lifter fails . . Sometimes you can change the lifter and the plate covering the valley and be ok . but sometimes the faulty lifter ruins the cam also . . To remove the lifter you need to remove the head . Some people will put a small rod down on the stuck lifter and smack it to try and free it , but when i have done that it does not take long for it to fail again . also there is a screen under the oil sending unit that gets plugged and causes oil pressure to lifter issues . I have a video Brown Line Metalworks Digital Angle Gauge , For those Torque to Yield Bolts where was putting a head back on after changing the lifters . I tried to film the process of changing the lifter but the video got corrupted on my camera card and lost the footage . I hope yours is just a dirty injector
You video helped a lot man,I have 04 silverado 4x4.been chasing the damn PO300 for a while now,has that little miss when going up a grade...ive done coil packs,plugs,wires,crank position sensor,map,and couple more things...doing injectors next,thanks
You're too hard on yourself dude. I liked your video cuz you didn't fill it with a bunch of unnecessary air time containing obvious info like a lot of people do to make it sound like they know more than they do.👍
I’m going through this with cylinder 7. Mine dropped to 45 and the rest 40 like yours. Another issue with these trucks are the way the engine leans back and the gunk sits in the back of the fuel rail and eventually build up to the 7/8 injectors.
@anonymous If there is a known good injector , you need to see if reference voltage is going to injector , They get that power from the same color wire , Sometimes there is a bad connection in the connector at injector . The other wire is the signal , and you really need a scope or something to see it . You would back probe at injector and then at the connector on computer , can get a pin out to see which wire it is on connector or by wire color . if no scope , can test signal wire from injector to computer connector , with ohms meter to see if broke . But need power to injector and a good signal wire from injector to computer , pcm . PCM open and closes the circuit .
@anonymous mines kinda doing a similar thing but it’s knocking out the exhaust it’s got spark it’s a new plug a new wire and coil their is no knock in the engine bay it sounds just like small tick noise it doesn’t sound like a lifter tick and after a while I loose all fuel pressure it dies down When I put it in drive or any gear it just dies I thought it was a vacuum leak but untill it gets to temp it don’t start doing it I think I have it pinned to a number 8 injector if you had the same noise then I’ve found my problem.
Great job man I'm gonna be doing this asap I gotta misfire random that I can't get out of a 02 avalanche and this is just what I needed to see thanks man
wtbm123, Cool fix! Knowing what one is doing gets to the root of the problem much sooner, I can picture a person changing plugs, coil packs, etc and getting to the injectors by default, many $ later!
Buy the thinkdiag scantool and it’s fully bidirectional and you get app and be able to use your phone with it..I think you get one free lifetime manufacturer that you can pick and the rest are around $40 a year but it’s worth it
My 2002 gmc van misfire 2 years got so bad could not drive. 3 mechs gave up. It only misfired when i reversed. Then it gradually got worse as a drove. On highway Blinking engine light. As time passed i had to park it. Tryed new Distributor kit . New plugs wires. New spider injectors. I got broke and the Auto store rich. Sold it..
I just had to replace my number 7 fuel injector and I hoping and praying that it's fixed my misfire I erase the codes only a little bit of time will tell if the engine light pops back up I'm a Praying
***** Get a better scanner . lol . there are code readers , then scanners with codes and live data , then there are scanners that do codes, live data and bi directional tools. the bi directional tools let you interact with car . for testing injectors and doing balance test there are tools like OTC 3398 Fuel Injection Pulse Tester for around $125
Chasing a single PO300 on a 2000 Silverado 5.3. I replaced plugs, wires, coils, MAF, fuel filter, fuel pressure at 48, cat temps are good, no intake codes, & several cans of seafoam. Two, five, six & eight shoot up to 40 (current) misfires when traveling 70+. I've heard crankshaft sensor relearn, but I have no crankshaft code. Any ideas?
Looks like a good video to me. Uh, got a 94 Caprice with either a clogged or bad injector not closing dumping raw fuel in the engine. No OBDII to work with. I just need to isolate which injector. Thanks!
I'm not having codes, luckily. I am having a small tick and sometimes a rough idle with sitting. I'm not sure if the plugs and wires are original. bought it used at 125k now at 165k. mpg is 15 stock, 17 with my bullydog. its not the programmer, im running 95 octane fuel on a 87 tune with performance shift points. truck started the ticking before the tuner, but getting worse. just curious if others are having an issue like that. also my account belt won't stay on. new tensioner and belt, pulled are running straight too.
***** Pull out the injectors.There is a round mesh filter where the gasoline is forced in at the top of the body. These mesh filters can be replaced with new ones[ebay] To see the spray pattern, attach an electronic pulsegenerator[made from555 timers] and hook up to 12v batt while spraying brake cleaner thru the filter.Compare spray patterns and notice the faulty one.
***** Can ohms test a few to see if one is different , but if dirty all will still read the same , so the other option if you suspect one is swap the injector to another cylinder and see if misfire follows. they also make stand alone tools that can trigger injectors and do a injector balance test . Some say that is the best way.
wtbm123 You are one smart guy. I am still learning on the computer stuff,l Just bought a PCI wirring harness for the LS1 I am putting in the chevelle. hope It goes well. If not I may be bending your ear lol take care guy.
Hmmm, are most of the injectors marked for voltages ? I remember some from smaller gm and chrysler that I have said five volts..... also, do you think when people run cleaner full time in their vehicles that it can cause these kinds of issues and also plugged catalytic converter issues ?
Hey your videos will allways help someone, dont put your videos down. Im not supprised you gave them all a clean, sounds like that vehicle needs a new fuel filter, or one fitted if its missing, otherwise the injectors will suffer later. I bet after a set of spark plugs it will be better too :D With all the other codes.... i would run away fast ha ha lol.
zx8401ztv Some one else before me changed filter , spark plugs , well they even installed a new rebuilt engine , but still had the miss . It is time consuming to make videos and easy to say , or not fully explain things , and then when you are trying to hurry and beat the rain , videos can be a hand full. Thanks for watching and your support.
I'm having misfire issues on #4 cyl on my 04 avalanche 5.3 but also getting bank 2 lean codes. Plugs and coilpacks are good. Could #4 having a bad injector cause it to have a lean code aswell?
When finding a plugged injector,consider sending all of them out for service and flow testing They are all running in the same fuel and conditions. Would a quality repair be to change one spark plug?
Well a lot depends on what the customer pays for and a injector balance test and ohms test can tell you a lot about the injector . Not a flow test but can tell you mostly what you need
I have a P0300 mostly number #5. Only real problem is it's fine till going downhill or occasionally on a really flat section of road, with cruise on. Like it only misfires when the rpms are low. But it's only done it in those conditions. Normal driving and it's fine no issues. I'm gonna start swapping coils etc but, any ideas?
Unless it is a newer AFM engine . only real way of knowing is with a diagnostic computer . How do you know it is mostly 5 on a random misfire code . unless you have some way of seeing misfire data. Usually one coil will set a misfire per cylinder code . Like if coil bad on #5 think it may set a p0305 . A p0300 is usually more than one cylinder , but has to have so many in a cylinder to set a cylinder code . and a coil should only pick on one cylinder. Maybe a vacuum leak , lazy 02 sensor, Dirty injector, . A injector balance test may tell a lot.
@@wtbm123 No it's an 04, I have an Autel, so I can see thousands of misfires on mostly #5, #8 but 6 also. Part of the problem is the narrow window it seems to do it. I checked the Plugs seem ok, the wires check out ok with resistance. Working on swapping #8 coil to see if it moves.
I've got a misfire on cylinder number 3 it's not the coil and it's not the injector it only does it when it's idling soon as you touch the gas it goes away
Thank you for the video. I have a misfire code on one of the cylinders. After doing various diagnoses, it has been definitely determined that the issue is with a bad ground wire on the fuel injector connector on the cylinder with the misfire code. I replaced the entire ground wire for that cylinder with the misfire code from the fuel injector connector all the way to the ECM just to be sure, even though I didn't even see a broken or chewed up wire. This didn't resolve the issue. The car has a V6 cylinder and I also diagnosed the other 5 fuel injector connectors. The ground wires for all those 5 fuel injector connectors are fine. Since replacing the ground wire didn't resolve the issue, is there anything you can suggest I try out at this point? For the time being, as an alternative method, I decided to splice and share the functional ground wire from the adjacent cylinder. In other words, I now have two fuel injector connectors sharing the same ground wire. This method has worked and has resolved the misfire issue. However, my concern is if this method is an acceptable resolution or is there any type of downside or hazard this could cause? Thank you!
It depends if the injector is ground wire controlled or power wire controlled, or 3 wire I guess. I would assume since the misfire was corrected it’s a suitable repair.
@@themaxee08 I have discovered that the injector is ground wire controlled. So, what does that mean in the context of my situation? Btw, even though the check engine light for the misfire code has not been triggered and the symptoms of a misfire haven't emerged as a result of sharing one ground wire with two injectors, the car tremendously lacks power. It's like the car is incapable of going past 40 mph and when it comes to even a moderate incline road, then it's pretty much hopeless. Hence, it appears that driving this car with just 5 cylinders is somehow a better option despite the misfire that will be present. Btw, this a V6 cylinder.
@@Zeberka767 Means the input voltage is always the same , and it is controlled by the ground wire to change values . If you changed the ground wire where did it go to . did it go to a grounding point or back into the computer . If to computer i wonder if that channel is bad . Does it run better on 5 other than the miss . It is hard to say with out seeing the car and seeing the data
To the man who made this video and made my day a little bit easier... I have a slight Whistle While pushing on the accelerator last for half of a second 2004 Chevy Silverado 1500 is it a possible vacuum leak somewhere or is that normal for those throttle body need cleaned? What do you think it is?
I bought intake gaskets and I did the water test on the intake gaskets earlier and I didn't get no change in my idle so I'm almost thinking that it's not my intake gaskets
I have a 07 vortex max, number 4 misfire. I was driving then it started to run rough, smoke tail pipe,shifting hard, and showing traction control and stability control flashing. I put new plug,and coil. Thinking I should play with the injector.?
@@wtbm123 it's going tothe shop monday. I started it and took the wires off the fuel injector and it didnt run no different. Not sure if any power is getting to my injector.
On a 2003 Suburban I noticed a miss when going downhill so I paid more attention to under acceleration ad felt it. Then the engine light came on. I still need to check for codes but it seemed very unusual to feel a miss while going downhill with no load. Would you have a thought on that?
Hope you get it sorted out . Several things can make a miss fire , but have ran into several with dirty injector like these . If this keeps happening could be dirty tank or lines . Thanks for stopping by and let us know if this helps your or not .
My 99 Suburban had a random misfire on different cyls..Changed plugs,wires.cap & rotor. Still had misfire. The distributor had a bad bearing. Causing the shaft to wobble around.
found problem clogged dead catalytic converter was causing all the problems was no misfires just to much back pressure strangling the motor replaced cat with universal high flow motor runs like new extremely powerful for a V6 3100 but now because of stupid California Emission on a car in louisiana im popping a P0420 code because Its not reading the levels it wants to for emissions so have to put a 02 sensor Spacer to lift sensor up out of direct flow to changes readings to get code to go away
My 99 is doing something similar say multiple misfire and say mainly #8 I started the truck and unplugged #8 wire from the coil pack and no change in the way the truck ran but when I done the same for 6 the truck started missing more and I could see a spark from the wire to the coil sparking when I plugged it in. So if #8 isn't doing that would it be coil? Or maybe have to do with some thing else ?
No I'm not losing coolant. It only does it during the cold months aswell during the summer it doesn't do it . It doesn't smoke constantly just a whole lot every now and then I mean so much it will cloud up the whole intersection but it only does it about 30 seconds
@@wtbm123 no I'm not losing any coolant. It only does it during cold months to it doesn't smoke constantly just a whole bunch for about 30 seconds to a minute at a time and stops. A whole lot of smoke it doesn't smell like coolant or burning oil. Doesn't use any oil either
You should probably be back feeding the injectors those cleaners won't brake down most funk that makes it to the rail any make up a pressure can that can be regulated then get you a momentary toggle switch and hooked to a 6 volt battery hook hook your pressure can to your air compressor such a pressure about 60 lb and let it eat but back feed the injector is the only thing that makes sense
anyone that does not have a good scanner could simply start the vehicle and unplug the jectors one by one listen for the motor to change if it doesn't you know there's a bad injector same thing with coils
Well kinda , this injector still worked but not providing the proper fuel . But they do make some very inexpensive injector pulse testers like the EM276 and fuel pressure gauge one can use.
I have a 04 GMC 3500 dump truck that is pulling a random Engin misfire, I took it to my mechanic and after 1 week he could not find the problem. He gave me fuel cleaner and told me to drive it for a week and charged me $600. After a week it is still no better and my mechanic will not return my call. What should I do? I want to do this my self this time I'm not a mechanic but I do know what I'm doing but this has me stumped. Help
Hi I have a 2010 Yukon denali with 81k miles on it. Do I have an injector problem if I go full throttle from zero and at around 3k RPM I hear almost like a turbo gas release (whoosh) sound and once I am passed that and into the next gear, the sound doesn't return back .... I am not sure but once I felt like I smelled fuel when that sound came cause I had the windows rolled down. CEL code 219b keeps coming up once in a while too ... I am lost, please help!!
Could be a vacuum leak , could be injector , or even something in the valve train .Depending on what the live data on a scan tool says , but i might start by checking for vacuum leaks , then maybe a fuel injector balance test . Usually fuel pressure its self does not affect certain cylinders , but would check fuel pressure just to verify it was all good .
No real running issues . it was still working . If getting plugged it may . If can get it on a scan tool . look at up stream o2 compared to down stream . if they are mirroring each other cat is prob bad . Dirty throttle body sometimes does what you described , dirty MAF.
@@wtbm123 my main issue was a bad cat...i ended up fixing things that were not the issue... learned a lot in the process ,so i am not complaining.. thax
hey man i have 2010silverado 5.3 6speed single cab and it keeps misfiring after i changed spark plugs but when i drive it for a while it stops misfiring do you think it might be injectors or they didnt give me the right spark plugs
I have a 96 3/4 ton Chevy with a 5.7 vortec him about the set on fire! I have a stumble or hesitation at driving speed and not one code in the freaking computer.idols like a champ plenty of combustion fuel pump checks out as doing its job is it supposed to EGR valve checks out the only thing I can think is maybe the O2 sensors have everything jacked up maybe running One Bank lien One Bank rich or somethingonly doesn't it driving speed and doesn't do it while the engine's cold only after it warms
is it spider injector . if so look in intake to see if fuel is leaking from one of the lines , is pressure regulator working . maybe a popet is leaking
I have a misfire on 4 and 8 with 8 doing the most. Compression was 140 on 8 and 150 on 6, so compression was good. Replaced mass air flow, and filter. Ran injector cleaner threw it and the light went off for about a day. So the only thing left to get rid of misfire would be to replace the injectors right??? Comment what you think
If spark is good , coil , wire and spark plug all test good , compression is good next likely thing for individual cylinder would be test the injectors . I would want to do a injector balance test to see . With out testing each part can only guess . If low speed miss , also test for vacuum leak , if leaking in right spot can lean some cylinders out more than others .
i have the same issue i got a PO300 which a guy told me i need to look at injector #3. i also have a PO171 and a P1441 which also indicates i have a fuel issue. I am tired of dealing with this truck so i ll have someone to work on it...but my questions is can i drive it? will i screw up something else if i use it? help
For the injectors , A injector balance test would tell a lot . The P1441 is the purge valve a lot of times . If stuck open it can cause issues .No real way to know with out testing to see if parts are good or bad . Any time a fuel mixture is lean or rich it can damage other components , the catalytic converter for one
i bought this truck because most of the stuff was brand new as if they went around and decided to replace almost everything the engine and motor are immaculate.i have been able to do some work myself because i can see where things are and i do what i see in the utube videos lol
right in front . If looking at purge valve , look in it and the lines to see if any carbon is in them . If black chunks are in there the charcoal canister may be to blame , especially if over filled a lot . But the best thing would be to test it and the injectors .
yep i checked that part and it looked brand new....i will have the guy do the injector test. so for what i gather if i drive the truck for about 2 hrs i can ruin the catalytic converter, right?
so ive been havin with my truck startin. so I wasn't havin any problems with my truck and I stop at a gas station and when I came back to the truck it wouldn't start and said reduced engine power and overheatin. so I checked my fluids and they were good to go. so I changed my sensor and the overheatin cleared but the reduced engine power stayed. so I hooked up a reader and it through two codes both codes had multiple possible problems one being the battery. so I tried to jump it and it didn't work and I realized I did have low battery charge so I bought a new battery and it fixed that. well it still didn't start so my body held my tb and it sill didn't start and the throttle body didn't seem to be movin. so im thinkin its that but is there a possibility that I just need to change my sparkplugs? any suggestions?
Sheila Bruno Some times you need a scanner to move the throttle unless running . Spark plugs could make it not start , but prob not the reduced power . A lot of times it is throttle body related .Is the throttle body clean inside . One would need to hook it to a scan tool and see the data to know for sure . may be a few test you can do with out a scan tool . One could remove a few spark plugs and look at them .
well I just changed my throttle body out for a new one. no help there I would change my spark plugs but its about to rain. now im thinking its the starter,relay,solenoid problem. what do you think about that? or should I just tow the damn thing to a shop?
Sheila Bruno It is very hard to say what is wrong with yours , with out seeing first hand what it does. I check for spark , fuel , compression , and timing , then go in the direction of what you do not have . On some chevys it is the , i think yellow wire going to throttle body , in the connector that plugs in . but with out seeing it it is very hard to say. is there any other codes.
injector balance test tool , can get cheap ones on line to test the injectors , still need a fuel pressure tester also , can test electric side of injector with ohms meter , but balance test tells if dirty or failing .
I have same problem on cycle 3 misfire I change fuel pump regular filter plugs wires and injectors all of them new ...still have same code what can I do next
Have you checked compression . Is the injector and coil on number three cylinder getting correct power and good signal wire . A injector balance test would prob be a good thing as it would confirm fuel injector working and wiring prob ok if can control injector with test . test spark strength . May also check for vacuum leaks , depending on where leaking it can lean one cyl out more than others .
One of the best videos i have seen on diagnosing a misfire.... thank you.
Glad it helped
I disagree entirely, YOU made a damn good video, you didn't rush it one bit, you gave me no less than 2 maby three more things to look at, and gunna save me hours on top of hours . Thank you . And 2 thumbs up.
This guy deserves a beer 🍺 & another one beer 🍺 !!!! Thank you
Thanks for watching and commenting
Proper diagnosis is key! Good video
I changed all my injectors, I knew they could be “cleaned” but didn’t know the screen came out, gonna go back and look at old ones to learn how that works. Great video 👍👍
I usually do not remove the screens , But yea if you bought new ones , Now would be a good time to experiment with the old ones . Thanks for watching
When I cleaned mine I blew the cleaner through the injector from the bottom to the top. First time I ever cleaned an injector and it worked great.
Exactly,you need to back flush them?I have been servicing Injectors for 15 plus yrs using ultrasound and a flow bench to confirm the before and after diagnosis. On car chemical cleaners are little better than 'snake oil' and at best should be treated as such.Olefins in gasoline is the biggest problem with Injectors and cannot be removed completely by Injector cleaners.
I just had to do the same thing with number 7 fuel injector replaced it erase the codes and now I'm hoping and praying it doesn't come back on idle smoother haven't taken on the freeway or anything yet but I will a little bit later and it's video helped me out a whole lot, appreciate it
Glad you got it sorted out , They can be a pain
Dude this was great vid quick and to the point without a lot of useless info and back story. THIS WAS GREAT and has giving me some definitive direction to take with my 8th cylinder misfire on my 99 suburban. Sadly it is spider style injection. Lots of fun! Thanks again!!!!!
+anubisjayne Thanks , and let us know if it was the same issue with yours .
I have noticed that this is common with Cyl 7 and 8 on the truck engines, seems the trash in the fuel rail like to collect on the back 2 cyl's
Yes i agree . Thanks for stopping by
Currently have a cylinder 7&8 misfire and put a extension on the injectors and listened it barely makes any noise if it even does make noise compared to other injectors. Must be common like you said.
More than enough info for me. I have the same truck and was wondering what the voltage for the injectors was. Your video helped me out alot. Thanks
Isn't it 12 volts? Or did you meant to say fuel pressure?
Excellent diagnostic/explanation. Same truck here, same code on #5. Will do coil/wire swap test first. Also spark plug swap. Maybe ohms resistance comparison on the plug wires too. My Elm327 program not have single injector fire control so I thought rig an extra injector plug with 12vDC & momentary switch. Test injector for electric function(click sound) and fuel pressure change when tapping the switch. Use this rig to intermittently open removed injector valve for cleaning too. One important thing is depressurize fuel rail before disconnecting by removing fuel pump relay from fuse box then run engine until it dies.
Look for something like this . To test pressure drop on injectors to see if all spray the same amount of fuel . a pound off can make it run different . ALLOSUN Fuel Injector Tester Cleaner & Adapter DIY Cleaning Tools Kit Set (Fuel Injector Tester + Adapter)
Thank you Sir. Every little insight helps.
Thank you for watching and commenting
Thank you for the cleaning tip , I have a mini ultrasonic cleaner but your method can be used with or in addition to that .
You’re welcome 😊
@@wtbm123 it's a little ultrasonic jewelry cleaner but I can do 4 injectors at a time .
Second hand store has useful stuff sometimes .
Very informative. Lots of good stuff in there. I didn't know we could clean injectors that way. Gonna give it a shot. Thanks.
Thanks for watching and commenting
I made one of 65 fords injector tools and improved on the sealing a bit . I put a vid up of it . Good info man !
Nice 👍 I noticed it looked like that truck still had the factory heater hose quick connectors to the heater core. The light coloured one on my truck broke right off, well I have new hoses with new quick connectors.
Thank you, having same issue. Completely forgot to check the injectors
Glad it helped
Thanks for a great diagnose I tried all typical solutions coil,sparkplug,wires etc. Having a problem with my number 8 cylinder 5.3 liter 07 tahoe I will try cleaning the fuel injector wish me luck thanks again for your video.
07 is prob a DOD engine . They have a lot of issues . A lot of times a solenoid leaks in the valley pan cover and that makes the lifter fail . Sometimes a pin in the lifter fails . . Sometimes you can change the lifter and the plate covering the valley and be ok . but sometimes the faulty lifter ruins the cam also . . To remove the lifter you need to remove the head . Some people will put a small rod down on the stuck lifter and smack it to try and free it , but when i have done that it does not take long for it to fail again . also there is a screen under the oil sending unit that gets plugged and causes oil pressure to lifter issues . I have a video Brown Line Metalworks Digital Angle Gauge , For those Torque to Yield Bolts where was putting a head back on after changing the lifters . I tried to film the process of changing the lifter but the video got corrupted on my camera card and lost the footage . I hope yours is just a dirty injector
Any updates ?
You video helped a lot man,I have 04 silverado 4x4.been chasing the damn PO300 for a while now,has that little miss when going up a grade...ive done coil packs,plugs,wires,crank position sensor,map,and couple more things...doing injectors next,thanks
Glad it helped . Thank you for watching and commenting
Did it help?
great stuff Terry, I don't know much about "computerized" cars, I appreciate the info!
Hey bud... just wanted to tell ya that I dig your name... from one ragamuffin to another!👍🏼
You're too hard on yourself dude. I liked your video cuz you didn't fill it with a bunch of unnecessary air time containing obvious info like a lot of people do to make it sound like they know more than they do.👍
I agree hate videos with a bunch of bs in it and crappy background music i like straight to the point and you were Good Job
Good enough how to for me. Not too technical. I appreciate it👏👏
Excellent diagnosis and trouble shooting. Process of elimination is always a good way to save buying parts you don't need to buy.
William Cresswell paving problem with it popping just win I floor. It twill run good and. Then it will start popping a 2000 Silverado 6.0 vortec
Another good how to WTBM! Hope the cleaning of the injector done the trick. Also cool truck from 65ford. Have a good'n
I’m going through this with cylinder 7. Mine dropped to 45 and the rest 40 like yours. Another issue with these trucks are the way the engine leans back and the gunk sits in the back of the fuel rail and eventually build up to the 7/8 injectors.
Yea quite a few get this way , some is the lines and stuff rust so bad even inside the metal lines
I have a no. 2 misfire going on right now.... gonna use this video..Thanks
i learned so you did good. thanks for posting.
Thanks
Good vid Terry. Thanks for sharing.
The Shade Tree Fix-it Man Thanks for watching
I got 2000 Yukon xl with a 5.3 same identical data thank you so much.
Thank yoy for stopping by
Thanks for the mention....
sixtyfiveford Thank you for watching , and for making your videos.
@anonymous If there is a known good injector , you need to see if reference voltage is going to injector , They get that power from the same color wire , Sometimes there is a bad connection in the connector at injector . The other wire is the signal , and you really need a scope or something to see it . You would back probe at injector and then at the connector on computer , can get a pin out to see which wire it is on connector or by wire color . if no scope , can test signal wire from injector to computer connector , with ohms meter to see if broke . But need power to injector and a good signal wire from injector to computer , pcm . PCM open and closes the circuit .
@anonymous mines kinda doing a similar thing but it’s knocking out the exhaust it’s got spark it’s a new plug a new wire and coil their is no knock in the engine bay it sounds just like small tick noise it doesn’t sound like a lifter tick and after a while I loose all fuel pressure it dies down When I put it in drive or any gear it just dies I thought it was a vacuum leak but untill it gets to temp it don’t start doing it I think I have it pinned to a number 8 injector if you had the same noise then I’ve found my problem.
Good detective work!
Great job man I'm gonna be doing this asap I gotta misfire random that I can't get out of a 02 avalanche and this is just what I needed to see thanks man
Thanks for watching and commenting
good video, my neighbours silverado had excacly the same problem. my chev is doing the same now.
You sir are a boss! Thanks for the education.
Glad to help
wtbm123, Cool fix! Knowing what one is doing gets to the root of the problem much sooner, I can picture a person changing plugs, coil packs, etc and getting to the injectors by default, many $ later!
Harvey Spooner Hello Harvey , It was a pretty easy one , i like the easy ones.
How did you remove the injector with taking off the entire fuel rail ?
If you pick up the rail some you have room to get most of them out
Enjoy listening to how you diagnose what's going on.
Great video. Nice job.
Thank you very much!
wish i could afford one of these scanners
10.000 was what snap on wanted and you have to update software yearly
Buy the thinkdiag scantool and it’s fully bidirectional and you get app and be able to use your phone with it..I think you get one free lifetime manufacturer that you can pick and the rest are around $40 a year but it’s worth it
My 2002 gmc van misfire 2 years got so bad could not drive. 3 mechs gave up. It only misfired when i reversed. Then it gradually got worse as a drove. On highway Blinking engine light. As time passed i had to park it.
Tryed new Distributor kit . New plugs wires. New spider injectors. I got broke and the Auto store rich. Sold it..
Knowing my luck, ill probably by it sometime soon.
@@mrniceguy3750 🤣🤣🤣🤣😪
Great info. Thanks for sharing...that Snap On reader is worth every penny you paid for it .
Thank you it fix my misfire
I just had to replace my number 7 fuel injector and I hoping and praying that it's fixed my misfire I erase the codes only a little bit of time will tell if the engine light pops back up I'm a Praying
That was a great video, thanks
That computer is soooo.nice...but upi interpreterting the data is what I am learning from you..nice Terry! CJ
Excellent video.
Thank you
That was a big help but what if you dont have a good scanner. I do not have a snap on diagnostic scanner just a code reader. Andy suggestions?
***** Get a better scanner . lol . there are code readers , then scanners with codes and live data , then there are scanners that do codes, live data and bi directional tools. the bi directional tools let you interact with car . for testing injectors and doing balance test there are tools like OTC 3398 Fuel Injection Pulse Tester for around $125
Chasing a single PO300 on a 2000 Silverado 5.3. I replaced plugs, wires, coils, MAF, fuel filter, fuel pressure at 48, cat temps are good, no intake codes, & several cans of seafoam. Two, five, six & eight shoot up to 40 (current) misfires when traveling 70+. I've heard crankshaft sensor relearn, but I have no crankshaft code. Any ideas?
Thanks for a great video!!!
Good video Terry
tomswonderfulworld Thank you Tom
great video !
Thanks for the visit
Can you replace the filter ,,,and if so how do you get the little filter out?
Excellent video, very informative.
Sorry
Looks like a good video to me. Uh, got a 94 Caprice with either a clogged or bad injector not closing dumping raw fuel in the engine. No OBDII to work with. I just need to isolate which injector. Thanks!
they sell a cheap tool that with it and a fuel pressure tester , one can do a injector balance test . could do a oms test on injectors also
I'm not having codes, luckily. I am having a small tick and sometimes a rough idle with sitting. I'm not sure if the plugs and wires are original. bought it used at 125k now at 165k. mpg is 15 stock, 17 with my bullydog. its not the programmer, im running 95 octane fuel on a 87 tune with performance shift points. truck started the ticking before the tuner, but getting worse. just curious if others are having an issue like that. also my account belt won't stay on. new tensioner and belt, pulled are running straight too.
Snipe Stud00 check for a loose spark plug
Very informative thanks for sharing
Glad it was helpful!
I like that schrader trick. Nice trouble shooting
is there a way to diagnose injectors without the scanners?
***** Pull out the injectors.There is a round mesh filter where the gasoline is forced in at the top of the body. These mesh filters can be replaced with new ones[ebay] To see the spray pattern, attach an electronic pulsegenerator[made from555 timers] and hook up to 12v batt while spraying brake cleaner thru the filter.Compare spray patterns and notice the faulty one.
***** Can ohms test a few to see if one is different , but if dirty all will still read the same , so the other option if you suspect one is swap the injector to another cylinder and see if misfire follows. they also make stand alone tools that can trigger injectors and do a injector balance test . Some say that is the best way.
wtbm123 You are one smart guy. I am still learning on the computer stuff,l Just bought a PCI wirring harness for the LS1 I am putting in the chevelle. hope It goes well. If not I may be bending your ear lol take care guy.
Tom OConnor Thanks Tom
Hmmm, are most of the injectors marked for voltages ? I remember some from smaller gm and chrysler that I have said five volts..... also, do you think when people run cleaner full time in their vehicles that it can cause these kinds of issues and also plugged catalytic converter issues ?
More350Power I am not a fan of putting much of any thing other than gasoline in the tank., Need to look it up for each car
good video Terry, thanks
Hey your videos will allways help someone, dont put your videos down.
Im not supprised you gave them all a clean, sounds like that vehicle needs a new fuel filter, or one fitted if its missing, otherwise the injectors will suffer later.
I bet after a set of spark plugs it will be better too :D
With all the other codes.... i would run away fast ha ha lol.
zx8401ztv Some one else before me changed filter , spark plugs , well they even installed a new rebuilt engine , but still had the miss . It is time consuming to make videos and easy to say , or not fully explain things , and then when you are trying to hurry and beat the rain , videos can be a hand full. Thanks for watching and your support.
Great time, keep it up
Thank you
I'm having misfire issues on #4 cyl on my 04 avalanche 5.3 but also getting bank 2 lean codes. Plugs and coilpacks are good. Could #4 having a bad injector cause it to have a lean code aswell?
yes
You sound EXACTLY. Like Pete from D.I.Y auto school
Thanks for watching and commenting
When finding a plugged injector,consider sending all of them out for service and flow testing They are all running in the same fuel and conditions. Would a quality repair be to change one spark plug?
Well a lot depends on what the customer pays for and a injector balance test and ohms test can tell you a lot about the injector . Not a flow test but can tell you mostly what you need
I have a P0300 mostly number #5. Only real problem is it's fine till going downhill or occasionally on a really flat section of road, with cruise on. Like it only misfires when the rpms are low. But it's only done it in those conditions. Normal driving and it's fine no issues. I'm gonna start swapping coils etc but, any ideas?
Unless it is a newer AFM engine . only real way of knowing is with a diagnostic computer . How do you know it is mostly 5 on a random misfire code . unless you have some way of seeing misfire data. Usually one coil will set a misfire per cylinder code . Like if coil bad on #5 think it may set a p0305 . A p0300 is usually more than one cylinder , but has to have so many in a cylinder to set a cylinder code . and a coil should only pick on one cylinder. Maybe a vacuum leak , lazy 02 sensor, Dirty injector, . A injector balance test may tell a lot.
@@wtbm123 No it's an 04, I have an Autel, so I can see thousands of misfires on mostly #5, #8 but 6 also. Part of the problem is the narrow window it seems to do it. I checked the Plugs seem ok, the wires check out ok with resistance. Working on swapping #8 coil to see if it moves.
I've got a misfire on cylinder number 3 it's not the coil and it's not the injector it only does it when it's idling soon as you touch the gas it goes away
Not sure with out seeing it , have you done a compression check , a injector balance test . Check for vacuum leak
Thank you for the video. I have a misfire code on one of the cylinders. After doing various diagnoses, it has been definitely determined that the issue is with a bad ground wire on the fuel injector connector on the cylinder with the misfire code.
I replaced the entire ground wire for that cylinder with the misfire code from the fuel injector connector all the way to the ECM just to be sure, even though I didn't even see a broken or chewed up wire. This didn't resolve the issue.
The car has a V6 cylinder and I also diagnosed the other 5 fuel injector connectors. The ground wires for all those 5 fuel injector connectors are fine.
Since replacing the ground wire didn't resolve the issue, is there anything you can suggest I try out at this point?
For the time being, as an alternative method, I decided to splice and share the functional ground wire from the adjacent cylinder. In other words, I now have two fuel injector connectors sharing the same ground wire. This method has worked and has resolved the misfire issue. However, my concern is if this method is an acceptable resolution or is there any type of downside or hazard this could cause? Thank you!
I could agree that could be the issue . Wiring is over looked a lot of times .
It depends if the injector is ground wire controlled or power wire controlled, or 3 wire I guess. I would assume since the misfire was corrected it’s a suitable repair.
@@themaxee08 I have discovered that the injector is ground wire controlled. So, what does that mean in the context of my situation? Btw, even though the check engine light for the misfire code has not been triggered and the symptoms of a misfire haven't emerged as a result of sharing one ground wire with two injectors, the car tremendously lacks power. It's like the car is incapable of going past 40 mph and when it comes to even a moderate incline road, then it's pretty much hopeless. Hence, it appears that driving this car with just 5 cylinders is somehow a better option despite the misfire that will be present. Btw, this a V6 cylinder.
@@Zeberka767 Means the input voltage is always the same , and it is controlled by the ground wire to change values . If you changed the ground wire where did it go to . did it go to a grounding point or back into the computer . If to computer i wonder if that channel is bad . Does it run better on 5 other than the miss . It is hard to say with out seeing the car and seeing the data
To the man who made this video and made my day a little bit easier... I have a slight Whistle While pushing on the accelerator last for half of a second 2004 Chevy Silverado 1500 is it a possible vacuum leak somewhere or is that normal for those throttle body need cleaned? What do you think it is?
I bought intake gaskets and I did the water test on the intake gaskets earlier and I didn't get no change in my idle so I'm almost thinking that it's not my intake gaskets
The sound is prob more of a leak , prob some place before the throttle body
Usually intake gaskets on those , make it run bad cold at first . Best thing to do is hook it up to a scanner with live data , to see what is wrong.
I need a Solus Ultra. Good diagnosis on the injector
Ozzstar There are a lot of nice scanners out there and many are nicer than the Ultra. Thanks for watching and commenting.
wtbm123 yeah there are, i just can't afford them a.k.a Verus Pro! lol
Ozzstar Same reason i do not have one . lol
I have a 07 vortex max, number 4 misfire. I was driving then it started to run rough, smoke tail pipe,shifting hard, and showing traction control and stability control flashing. I put new plug,and coil. Thinking I should play with the injector.?
Sounds like you may need to hook it to a scanner and see some live data . Did you do a compression check on cylinder 4 and a few others to compare
@@wtbm123 it's going tothe shop monday. I started it and took the wires off the fuel injector and it didnt run no different. Not sure if any power is getting to my injector.
If you just replaced the plugs and wires , most times a cylinder misfire is the ignition coil gone bad; they cost about 57 $.
Did you watch the video
@@wtbm1234 years later lmao this guy smh
Thanks 👍👍
Thank you too
On a 2003 Suburban I noticed a miss when going downhill so I paid more attention to under acceleration ad felt it. Then the engine light came on. I still need to check for codes but it seemed very unusual to feel a miss while going downhill with no load. Would you have a thought on that?
Hope you got it fixed up and running again
Best video. 👊👊
Glad you enjoyed it
Man I hope this working been chasing my misfires for 2 years now
Hope you get it sorted out . Several things can make a miss fire , but have ran into several with dirty injector like these . If this keeps happening could be dirty tank or lines . Thanks for stopping by and let us know if this helps your or not .
excellent work thanks
My 99 Suburban had a random misfire on different cyls..Changed plugs,wires.cap & rotor. Still had misfire. The distributor had a bad bearing. Causing the shaft to wobble around.
cyclemaster46 Yea a lot of people forget to check for bearing play . good job finding it.
what could cause a misfire stumbles major loss of power but no codes popping at all scanner even says no codes in DTC library
May check fuel pressure
Jacob Hayden moisture leak in the cap
Jacob Hayden if it hard to start after the rain. thats would most likely be the cause
found problem clogged dead catalytic converter was causing all the problems was no misfires just to much back pressure strangling the motor replaced cat with universal high flow motor runs like new extremely powerful for a V6 3100 but now because of stupid California Emission on a car in louisiana im popping a P0420 code because Its not reading the levels it wants to for emissions so have to put a 02 sensor Spacer to lift sensor up out of direct flow to changes readings to get code to go away
My 99 is doing something similar say multiple misfire and say mainly #8 I started the truck and unplugged #8 wire from the coil pack and no change in the way the truck ran but when I done the same for 6 the truck started missing more and I could see a spark from the wire to the coil sparking when I plugged it in. So if #8 isn't doing that would it be coil? Or maybe have to do with some thing else ?
Mine too
99 , 307 code i put plugs clea ned and swapped injectors
coil pack maybe , wiring issue , compression .
prob the coil , but if you switch number 8 coil to another known good cylinder and code for misfire follows the coil then coil is bad
hey my cylinder 7 reads to 14 then back to 0, I've changed spark plugs wires, and that coil still a misfire.
Would a dirty injector cause it to puff white smoke every now and then?
Probably not , are you losing any coolant.
No I'm not losing coolant. It only does it during the cold months aswell during the summer it doesn't do it . It doesn't smoke constantly just a whole lot every now and then I mean so much it will cloud up the whole intersection but it only does it about 30 seconds
@@wtbm123 no I'm not losing any coolant. It only does it during cold months to it doesn't smoke constantly just a whole bunch for about 30 seconds to a minute at a time and stops. A whole lot of smoke it doesn't smell like coolant or burning oil. Doesn't use any oil either
You should probably be back feeding the injectors those cleaners won't brake down most funk that makes it to the rail any make up a pressure can that can be regulated then get you a momentary toggle switch and hooked to a 6 volt battery hook hook your pressure can to your air compressor such a pressure about 60 lb and let it eat but back feed the injector is the only thing that makes sense
Ok
anyone that does not have a good scanner could simply start the vehicle and unplug the jectors one by one listen for the motor to change if it doesn't you know there's a bad injector same thing with coils
Well kinda , this injector still worked but not providing the proper fuel . But they do make some very inexpensive injector pulse testers like the EM276 and fuel pressure gauge one can use.
I have a 04 GMC 3500 dump truck that is pulling a random Engin misfire, I took it to my mechanic and after 1 week he could not find the problem. He gave me fuel cleaner and told me to drive it for a week and charged me $600. After a week it is still no better and my mechanic will not return my call.
What should I do? I want to do this my self this time I'm not a mechanic but I do know what I'm doing but this has me stumped.
Help
Hi I have a 2010 Yukon denali with 81k miles on it. Do I have an injector problem if I go full throttle from zero and at around 3k RPM I hear almost like a turbo gas release (whoosh) sound and once I am passed that and into the next gear, the sound doesn't return back ....
I am not sure but once I felt like I smelled fuel when that sound came cause I had the windows rolled down.
CEL code 219b keeps coming up once in a while too ...
I am lost, please help!!
Could be a vacuum leak , could be injector , or even something in the valve train .Depending on what the live data on a scan tool says , but i might start by checking for vacuum leaks , then maybe a fuel injector balance test . Usually fuel pressure its self does not affect certain cylinders , but would check fuel pressure just to verify it was all good .
Good job
Thanks
when you drove it was it running poorly,hesitation etc...thax
No real running issues . it was still working . If getting plugged it may . If can get it on a scan tool . look at up stream o2 compared to down stream . if they are mirroring each other cat is prob bad . Dirty throttle body sometimes does what you described , dirty MAF.
@@wtbm123 my main issue was a bad cat...i ended up fixing things that were not the issue... learned a lot in the process ,so i am not complaining.. thax
Thank you.
Thanks for stopping by
hey man i have 2010silverado 5.3 6speed single cab and it keeps misfiring after i changed spark plugs but when i drive it for a while it stops misfiring do you think it might be injectors or they didnt give me the right spark plugs
I can not say with out seeing it . but a injector balance test would prob tell if it was injectors .
I have a 96 3/4 ton Chevy with a 5.7 vortec him about the set on fire! I have a stumble or hesitation at driving speed and not one code in the freaking computer.idols like a champ plenty of combustion fuel pump checks out as doing its job is it supposed to EGR valve checks out the only thing I can think is maybe the O2 sensors have everything jacked up maybe running One Bank lien One Bank rich or somethingonly doesn't it driving speed and doesn't do it while the engine's cold only after it warms
is it spider injector . if so look in intake to see if fuel is leaking from one of the lines , is pressure regulator working . maybe a popet is leaking
Having same problem im gonna replace the whole coil pac just replaced the water pump
With out testing the parts it is hard to tell what is wrong . Hope you get it sorted out
I have a misfire on 4 and 8 with 8 doing the most. Compression was 140 on 8 and 150 on 6, so compression was good. Replaced mass air flow, and filter. Ran injector cleaner threw it and the light went off for about a day. So the only thing left to get rid of misfire would be to replace the injectors right??? Comment what you think
If spark is good , coil , wire and spark plug all test good , compression is good next likely thing for individual cylinder would be test the injectors . I would want to do a injector balance test to see . With out testing each part can only guess . If low speed miss , also test for vacuum leak , if leaking in right spot can lean some cylinders out more than others .
wtbm123 how would you go about testing the injectors? Would it just not be spitting gas?
Could move those injectors to a different cylinder and see if issue follows
wtbm123 I'll give it a try man. Ill let you know
I have a 2006 Silverado and it only misfires at 4000+ rpms any ideas? I’ve changed plugs and wires
It could be quite a few things , If you get it sorted please let us know what you found as it may help others
Restricted injector have the same issue on my yukon
Thanks for watching and commenting
i have the same issue i got a PO300 which a guy told me i need to look at injector #3. i also have a PO171 and a P1441 which also indicates i have a fuel issue. I am tired of dealing with this truck so i ll have someone to work on it...but my questions is can i drive it? will i screw up something else if i use it? help
For the injectors , A injector balance test would tell a lot . The P1441 is the purge valve a lot of times . If stuck open it can cause issues .No real way to know with out testing to see if parts are good or bad . Any time a fuel mixture is lean or rich it can damage other components , the catalytic converter for one
is the purge valve the one by the gas tank?
or is it the one on the engine like right in front
i bought this truck because most of the stuff was brand new as if they went around and decided to replace almost everything the engine and motor are immaculate.i have been able to do some work myself because i can see where things are and i do what i see in the utube videos lol
right in front . If looking at purge valve , look in it and the lines to see if any carbon is in them . If black chunks are in there the charcoal canister may be to blame , especially if over filled a lot . But the best thing would be to test it and the injectors .
yep i checked that part and it looked brand new....i will have the guy do the injector test. so for what i gather if i drive the truck for about 2 hrs i can ruin the catalytic converter, right?
so ive been havin with my truck startin. so I wasn't havin any problems with my truck and I stop at a gas station and when I came back to the truck it wouldn't start and said reduced engine power and overheatin. so I checked my fluids and they were good to go. so I changed my sensor and the overheatin cleared but the reduced engine power stayed. so I hooked up a reader and it through two codes both codes had multiple possible problems one being the battery. so I tried to jump it and it didn't work and I realized I did have low battery charge so I bought a new battery and it fixed that. well it still didn't start so my body held my tb and it sill didn't start and the throttle body didn't seem to be movin. so im thinkin its that but is there a possibility that I just need to change my sparkplugs? any suggestions?
Sheila Bruno Some times you need a scanner to move the throttle unless running . Spark plugs could make it not start , but prob not the reduced power . A lot of times it is throttle body related .Is the throttle body clean inside . One would need to hook it to a scan tool and see the data to know for sure . may be a few test you can do with out a scan tool . One could remove a few spark plugs and look at them .
well I just changed my throttle body out for a new one. no help there I would change my spark plugs but its about to rain. now im thinking its the starter,relay,solenoid problem. what do you think about that? or should I just tow the damn thing to a shop?
Sheila Bruno It is very hard to say what is wrong with yours , with out seeing first hand what it does. I check for spark , fuel , compression , and timing , then go in the direction of what you do not have . On some chevys it is the , i think yellow wire going to throttle body , in the connector that plugs in . but with out seeing it it is very hard to say. is there any other codes.
Have a code P0300 and have changed wires and sparks
injector balance test tool , can get cheap ones on line to test the injectors , still need a fuel pressure tester also , can test electric side of injector with ohms meter , but balance test tells if dirty or failing .
I have same problem on cycle 3 misfire I change fuel pump regular filter plugs wires and injectors all of them new ...still have same code what can I do next
also coil packs
Have you checked compression . Is the injector and coil on number three cylinder getting correct power and good signal wire . A injector balance test would prob be a good thing as it would confirm fuel injector working and wiring prob ok if can control injector with test . test spark strength . May also check for vacuum leaks , depending on where leaking it can lean one cyl out more than others .
compression good
Dam awesome video
+Paradoxical Power Thank you
good job!