Those early Multec 2 injectors had a terminal pin fretting issue. GM issued a TSB on it. The pins are so thin that they fret and develop an oxide layer, causing a misfire. You can sometimes unplug them and plug them back in and they'll work again for a while. GM's fix was to use dielectric compound on the pins to reduce fretting. They eventually moved away from those fragile pins and went to a USCAR-style (EV6) connector which i believe eliminated the issue once and for all.
Ivan, I work for a GM dealer in the parts department. I did not get a close enough of view of the injector; however, the spark plug is def counterfeit. The way to tell on those is that if you look closely at the grounding electrode, near where it centers over the central electrode, there should be a small “ raised dot” on the OEM. The counterfeits do not have this. That’s why you had to bend the grounding electrode to an unusual shape or position. Now, that’s not say that some of the counterfeiters don’t catch on and start trying to put that raises dot on their creations. GM is taking steps to try to help this situation by adding a holograph on all parts containers and they recently changed their core color of the blue on all their containers. It hard staying ahead of the counterfeiters. The best thing to do is always buy from a dealership or a reputable parts distributor.
And btw, there have been times when the grounding electrode actually breaks and/melts off and ends up in the cylinder. Bad bad situation when that happens. It’s best to replace those as soon as possible or better yet never use them. If the price is to good to be true… there’s a reason. ORM is more expensive but you’re better off. Another thing to mention is that typically somewhere in your community either at the dealership or a reputable seller has rebates going on where you get a few bucks off the cost of each plug. GM is REALLY good about paying out those rebates.
@@jamesmorehouse9575 You need a flat spotfaced surface in order for washer-gaskets to seal. This is an angle fit spark plug. No gasket required. Been that way since the 70s.
Sorry but the 70sand half of the 80s 454,350, and straight 6 had washers on them ,in the mid 80s they started having no washers I have 454 ,350 ,and a straight 6 all of them have washers on them.
Take the injector out, using a hand syringe full of methylated spirits, pulse the injector with 12V from a pair of wires connected to a battery (no sparks) at the same time plunging the syringe in. This will force out any carbon clogging the nozzle! Its worked for me many times,
I used to do that years ago . I found a $35 fuel injector kit has a box plug to injectors and a 2 plastic injector holders that have an end that fits on carb clearers or brake cleaner cans . It’s awesome
Like you showed.. That number 2 injector dropped down to 24 or 25, when everything else was right at 28. That could be the culprit on why bank 2 is lean on the fuel trims. But I also agree-- you would want to fix the exhaust leak first to eliminate that variable; it could be letting in fresh air and fooling the 02 sensor. cheers.
The early platinum plugs had a .060" gap and then when they switched to Iridium plugs they dropped the gap to .040". We had to watch for that when doing tune-ups.
I was thinking the instrument cluster was changed because 6 gauges and 3/4 or 1 ton trucks have 7. Then it dawned on me it has the anti theft system with extra pedal.
@@DaddyBeanDaddyBean Yeah I have repaired about 200 gm clusters so soon as I seen low mileage I looked closer at gauges and seen it didnt have trans temp. I even wrote out a comment as such then I realized the manual probably didnt have a temp sender.
The millennial anti theft device. Leave the keys in it, nobody will know how to drive it, except us old farts that grew up on B series 5+4 twin stick Mack's
Nice and Quick Logical Diag! The Spark plug installer needs to be fired up... With the low mileage one would think the plug is original. Someone probably on the trail swapping the plug but not able to test injectors. Ivan as usual you just work through the issues to get to the fix.
Drain one quart of old oil, and add 1 quart of Rislone to the engine crankcase. Run 1000 miles and change oil. helps the rings, knocks back some sludge
What would be a good scanner to get that does the injector balance test? I have an 06 with the same motor and same flashing engine light. Changed plugs,wires, coils. Thanks. Looking for a budget scanner. Great video
Given the year and low mileage of this truck, it must have sat unused for a long period. I had 2004 GMC 2500 HD that sat garaged for 5 years. I sold it to a local independent who was a former head tech at a Chevy dealer. He said he had to replace the fuel pump and 2 injectors because they were gummed up from sitting idle for so long.
With it being a dump truck, the low mileage isn't surprising. My dad and grandpa had a home remodeling business, and bought a 1990 F450 Dump truck brand new, and it currently has less than 100k on it. Basically it would get driven to a job, sit for a week or so while it was being filled with debris, quick trip to the dump, then back to the garage until the next job. At most, it may make a few trips to the dump or the quarry for sand/gravel/dirt for each job, but would be used multiple times a year. Dad finally retired about two years ago, so it sits for longer periods of time now.
The reason the touch screen was having issues is because of the water droplets on the screen; It's most likely a "capacitive touch screen", which are more sensitive to the slightest touch; whereas a resistive touch screen you typically have to push down a little harder and works better with a stylus/ pen, etc. So depending on what type of screen it is, you're either not pushing hard enough (resistive screen) or the droplets are making it think it's being touched in several places at once (if it's a capacitive screen). Just have a towel near by to wipe the screen and even wipe the droplets off of your gloves-- would probably clean up the issue with the random response.
@@Honeypot-x9s haha.. I'm on PC with a keyboard; so I can type things out in a hurry. I can't stand watching videos on my phone, I don't see how everyone does it.
Me too with my projector. My home entertainment is basically my main PC with an Autohotkey script to change sources, move browser between screens and control my media player (Potplayer).
I've been down that road before. Try to save a buck, and it ends up costing more in the end when you're chasing your tail trying to find out if the cheap parts are bad or something else is wrong. It pays to you top quality parts or oem parts.
I thought for a second Ivan was going to encounter the ever so rare No Parts Required AND No Tools Required repair. He is the mechanical wizard after all…..
i'm not sure if my eyes were fooling me but i think your inventory spark plug (acdelco 41-162) and the existing (ACDelco 41-962)plug had different part numbers. Are they interchangeable ?(8min 33sec)
Another great diagnostic and repair, Ivan! Seems the aftermarket parts did strike again. Possibly, all spark plug gaps are excessive, as it looked a factory bend on the one you adjusted. "Runs like a Chevy" - I liked that 🙂
$200 USD for 1 OEM fuel injectors, you're kidding ! I paid $200 AUD including postage for a brand new aftermarket set of fuel injectors for my 5.7 litre Chevrolet LS1 V8 engine in my Holden Commodore & that was freight from the U.S. to Australia. The OEM Bosch injectors got clogged with fine dust particles & they need a thorough clean but the generic brand of fuel injectors have lasted for about 140,000 kilometres (11 years) so far,the car starts much easier with the replacement injectors. Honestly,.I don't know why a 40,000 mile (60,000 kilometre) Chevy truck needs new fuel injectors for,my Commodore has done over 390,000 kilometres now & the engine is original apart from the hydraulic lifters & gaskets !
I would guarantee that injector is counterfeit if genuine injectors are $200 thats $1600 for full oem set. Rough mechanical work loose sparkplug unsecured injector plugs he needs to sack whoever fired the previous parts canon.
Yeah I agree, & what about the missing & poorly fitted fuel injector retaining clips? What a heap of shit previous repair. Fire the last tech's ass! - Or his supervisor!
@@PineHollowAutoDiagnostics awesome on pins connectors . I fix mostly heavy equipment manlifts cranes and loose dirty connections plague such. I was told Ferrari and Garmin Raytheon avionics approves of Stabilant 22 also. Most people do not realize die electric Silicone grease reduces conduction but actually used to stop oxidation and water intrusion .
Yeah, if you parts cannon a vehicle with junk parts you are just asking for trouble. And worst of all people tend to throw away all the OE stuff, so you have to re buy everything to get a reliable car.
I need help I have a 1999 Jeep grand Cherokee 4.7 I run it for 30 minutes then it shuts off and won’t start til it cool back down about 20 minute run it does it again has good cam and crank signal when this is happening but the 5 volt reference goes high too 7.5-8 bolts when it doesn’t wanna start on the 5volt reference what you guys think? I replaced pcm same problem? NEED HELP
Sometimes it is necessary to replace all of the injectors, for GM this is usually due to known failure modes of the injector design (could be heat + age related or a design defect). So, you may be faced with replacing all of the injectors when the first one fails because others will follow. However, properly replacing all of the injectors is not trivial or cheap. You first need to get a set of OEM injectors, test for proper coil resistance with the new set, then send the injectors out to be flowed and if necessary also cleaned. You can sometimes buy a remanufactured set that has been clean and flow tested, which is usually the most cost effective. This all takes time, but is needed to ensure that the fuel closed loop algorithm has accurate fuel flow control.
This is the gamble you take when you try to save a buck or two and settle on getting bargain basement aftermarket parts. Sure, sometimes you get lucky and the parts work well enough. But all too often, we all see cases like this. Where a kit of coils or injectors or whatever else it might be, turns out to be defective or broken, right out of the package. Or fail a short time later. But anyway. Nice work on the diagnostic Ivan. Your process of elimination was spot on.
Some folks are simply cheap minded regardless of the benefits and long term reliability a few dollars can be. That 2003 6.0 with those low miles deserves the best because it is one reliable design and has plenty of life left in it. Sadly, some owners will go with all of the cheap plans because they believe its an old "dump truck" and just doesn't qualify for decent maintenance and OEM parts. I found it a hard one to believe when the owner said he will do the spark plugs when Ivan already had one out and could have done them all for pocket change. Tight wad owner. BTW, Delphi parts are as good or better than any AC Delco or GM part. Delphi makes many GM parts for GM.
umm, where's the "platinum" ground electrode button on the old plug.. clearly not there at 8:40 ! it's either a knockoff plug and never had one or someone was fiddling and broke/ripped it off with brute force, while trying to fix the misfire. the original misfire was likely not ignition to start with and likely a fuel injector/wiring, but who knows how many hands have been sawing the bow on the fiddle. 🤪
I’ve had some injector failures on the gm 6.0 engines, mostly in cab and chases school busses. I love the injector drop test on the gm’s very useful indeed. Cheap junk internet parts are just a scourge, but unfortunately are everywhere.
Those sparkplugs may be counterfeit, or old. The older plugs in the 4.3L and 5.7L engines had the smaller lettering on them plus were gapped a .060 for the HEI distributors. When they switched to coil per plug, the gap was dropped to .040.
some after market parts aren't so great .. but .. sometimes you get to the point all you can get is aftermarket parts. I am that way with my second car.. its old.. 30 years old.. you can't get anything from the dealer even if you wanted. most you can possibly do is see who was the OEM for the Manufacturer and see if they still make the parts.. I am getting to the point I am thinking I need to stock a shelf of parts i might need in the future because I am already waiting 2 weeks for aftermarket stuff.
They are fine if they are from a reputable source, say like a junkyard. Too bad eBay makes it hard to even filter out Chinese stuff since they removed country filters last year!!
Love your methodical train of thought. I've been trying to fix a gas gauge issue on my 08 nissan quest. Not covered by the recall. Gauge reads full or empty, p0462 code. Replaced fuel pump , no change. Checked all the grounds I could find. Not sure where to go next. Wish I lived near you I would like to have a professional take a look. Enjoy your videos, keep it up.
There is recall on this problem and I believe the problem lies w/ the needle gauge itself. I seem to recall that they install a capacitor on the wiring or something like that.
I HATE liters of displacement. Hate! Has anybody ever figured out why this happened here in the good ol' USA? Part of our identity lies in using US units of measure rather than metric (stop whining - we all learned the metric system in school like everybody else - we just IDENTIFY with the standard system we know and love) What self-respecting gearhead doesn't miss our favorite engines like the 250, 260, 289, 292, 302, 318, 326, 327, 340, 350, 351, 360, 383, 389, 390, 400, 413, 421, 426, 427, 428, 429, 430, 440, 454, and of course, Cadillac's 500? 6.0 liter is 366 cubic inches, and if it was any good, could be remembered as well as any other. People arguing over whether a 302 Ford is 5.0 or 4.9 liters just makes me sad, and remembering the venerable Chevy 350 as a 5.7 is just ridiculous. Oh, and nice diagnosis and great simple repair. Good example of costing more money after trying to save money by cheaping out.
Congratulations on the 175,000 brotha! Great video as always! But I’m really waiting for that Audi 200 video with the big bad 5cyl turbo. Give me a hint, Independence Day special or nah? 🤔
Simple rule for me. If you want to run the risk of non-genuine parts. Which I'm not immune to when there is a huge difference in price and it's still a known good brand on an older vehicle. Always keep the original part/s until you know 100% it's fixed. I would want all my OE injectors, plugs and coils back from whom ever swapped them out!
Not bad of a fix! Sloppy work from previous work! Wow loose spark plug!!! Never seen that happen! I had a customer with bad misfire with bad injector, it was way flowing to much fuel, hydrolocking the engine! Had to overhaul everything in that 5.3 engine! Great video, testing like that! Awesome Ivan!
That's a "digital caliper", not a micrometer. Micrometers will look more like a C-clamp shape with a little mechanical knob on one side and they read much more precisely. I've watched hundreds of hours of milling and lathe work over the years, so I'm basically a youtube expert at this point. :)
I was taught to and always do, check brand new spark plugs before I put them into an engine, sometimes they are within spec, mostly, at least one is out. This is with OEM parts from reputable mfrs. I like to get new plugs gapped to as near identical as possible, it makes me smile how noticeable the difference is, like a little tune up.
12:30 had this same problem with my volvo 940. It was horrible to diagnose, i there were dead injectors, but there was also an overheating incident due to a bad turbo that also cracked the head which led to a blown head gasket, but before the head gasket totally blew out between cylinders 3 and 4 I was tracking down a dead 4th cylinder. But swapping injectors around seemed to revive the cylinder a bit? It wasn’t making sense. In retrospect, the head gasket was sealing sometimes and not sealing at other times? I put in a new head gasket but the temps are high and compression is 20 psi lower on cylinder 4 and there’s coolant coming out of the exhaust valve during warm up but then closes. It’s weird as hell, there’s little loss of fluids but the temps are high.. have to check the coolant pressure and could try a used head but I’m probably swapping engines and transmissions
Why would spark plugs need replacement on such a low mileage engine? Shade tree mechanics keep you in business. It is amazing how many you tube videos show that many repairs are the result of earlier "repairs". I am not a mechanic by profession but I can replace and engine and you will not find loose and missing hardware when I am done.
Well unless you did it and didn't say anything. But if one plug is loose and wrong gap. What about the others? Of coarse you figured it out. Did the owner keep the old parts?
I can offer a comparison or some history, although a different company, motocraft. i needed 6 injectors for a 300 liter inline 6, yes, the famous 4.9 used in a million F series trucks. They cost 100 bucks each from a dealer in 2003. Always been an expensive part
Those early Multec 2 injectors had a terminal pin fretting issue. GM issued a TSB on it. The pins are so thin that they fret and develop an oxide layer, causing a misfire. You can sometimes unplug them and plug them back in and they'll work again for a while. GM's fix was to use dielectric compound on the pins to reduce fretting. They eventually moved away from those fragile pins and went to a USCAR-style (EV6) connector which i believe eliminated the issue once and for all.
Looks like counterfeit spark plugs
@@jamespnhe’s not talking about spark plugs, he’s talking about fuel injectors
I've never heard of fretting before. Is that a general motors term?
@@pantherplatform
It’s a term that basically means wearing away from small movement. Lots of stuff can fret especially from vibration.
@@Walczyk not only fuel injectors, Ivan was also commenting on the printing used in the spark plugs that looked suspicious.
Ivan, I work for a GM dealer in the parts department. I did not get a close enough of view of the injector; however, the spark plug is def counterfeit. The way to tell on those is that if you look closely at the grounding electrode, near where it centers over the central electrode, there should be a small “ raised dot” on the OEM. The counterfeits do not have this. That’s why you had to bend the grounding electrode to an unusual shape or position. Now, that’s not say that some of the counterfeiters don’t catch on and start trying to put that raises dot on their creations. GM is taking steps to try to help this situation by adding a holograph on all parts containers and they recently changed their core color of the blue on all their containers. It hard staying ahead of the counterfeiters. The best thing to do is always buy from a dealership or a reputable parts distributor.
And btw, there have been times when the grounding electrode actually breaks and/melts off and ends up in the cylinder. Bad bad situation when that happens. It’s best to replace those as soon as possible or better yet never use them. If the price is to good to be true… there’s a reason. ORM is more expensive but you’re better off. Another thing to mention is that typically somewhere in your community either at the dealership or a reputable seller has rebates going on where you get a few bucks off the cost of each plug. GM is REALLY good about paying out those rebates.
I saw that the part numbers didn't match. Wrong spark plugs for application. Gap was meant for .060, which is what tipped me off.
I noticed that there is no calaps washers on those sparkplugs,why ?
@@jamesmorehouse9575 You need a flat spotfaced surface in order for washer-gaskets to seal. This is an angle fit spark plug. No gasket required. Been that way since the 70s.
Sorry but the 70sand half of the 80s 454,350, and straight 6 had washers on them ,in the mid 80s they started having no washers I have 454 ,350 ,and a straight 6 all of them have washers on them.
Take the injector out, using a hand syringe full of methylated spirits, pulse the injector with 12V from a pair of wires connected to a battery (no sparks) at the same time plunging the syringe in.
This will force out any carbon clogging the nozzle!
Its worked for me many times,
I used to do that years ago . I found a $35 fuel injector kit has a box plug to injectors and a 2 plastic injector holders that have an end that fits on carb clearers or brake cleaner cans . It’s awesome
Like you showed.. That number 2 injector dropped down to 24 or 25, when everything else was right at 28. That could be the culprit on why bank 2 is lean on the fuel trims. But I also agree-- you would want to fix the exhaust leak first to eliminate that variable; it could be letting in fresh air and fooling the 02 sensor. cheers.
The early platinum plugs had a .060" gap and then when they switched to Iridium plugs they dropped the gap to .040". We had to watch for that when doing tune-ups.
Usually, you get what you pay for. The non-OEM parts canon is a hit or miss proposition at best. Good work as always Ivan.
I was thinking the instrument cluster was changed because 6 gauges and 3/4 or 1 ton trucks have 7. Then it dawned on me it has the anti theft system with extra pedal.
If you park on a hill, the anti-theft system also serves as an auxiliary starter. It's not as awesome as dual alternators but it's something, right?
@@DaddyBeanDaddyBean Yeah I have repaired about 200 gm clusters so soon as I seen low mileage I looked closer at gauges and seen it didnt have trans temp. I even wrote out a comment as such then I realized the manual probably didnt have a temp sender.
The millennial anti theft device. Leave the keys in it, nobody will know how to drive it, except us old farts that grew up on B series 5+4 twin stick Mack's
I see you are using the OSHA approved, leather-bound, step ladder. ;-)
Nice and Quick Logical Diag! The Spark plug installer needs to be fired up... With the low mileage one would think the plug is original. Someone probably on the trail swapping the plug but not able to test injectors. Ivan as usual you just work through the issues to get to the fix.
Those plugs are two different part #'s, aren't they? 41-162 vs 41-962.
I prescribe an aggressive Techron treatment. Probably gummed up due to all the sitting.
Drain one quart of old oil, and add 1 quart of Rislone to the engine crankcase. Run 1000 miles and change oil. helps the rings, knocks back some sludge
What would be a good scanner to get that does the injector balance test? I have an 06 with the same motor and same flashing engine light. Changed plugs,wires, coils. Thanks. Looking for a budget scanner. Great video
Given the year and low mileage of this truck, it must have sat unused for a long period. I had 2004 GMC 2500 HD that sat garaged for 5 years. I sold it to a local independent who was a former head tech at a Chevy dealer. He said he had to replace the fuel pump and 2 injectors because they were gummed up from sitting idle for so long.
With it being a dump truck, the low mileage isn't surprising. My dad and grandpa had a home remodeling business, and bought a 1990 F450 Dump truck brand new, and it currently has less than 100k on it. Basically it would get driven to a job, sit for a week or so while it was being filled with debris, quick trip to the dump, then back to the garage until the next job. At most, it may make a few trips to the dump or the quarry for sand/gravel/dirt for each job, but would be used multiple times a year. Dad finally retired about two years ago, so it sits for longer periods of time now.
The orange lower injector seal was a dead give away that the injector is counterfeit. Ive dealt with them before either ebay or amazon special.
The reason the touch screen was having issues is because of the water droplets on the screen; It's most likely a "capacitive touch screen", which are more sensitive to the slightest touch; whereas a resistive touch screen you typically have to push down a little harder and works better with a stylus/ pen, etc. So depending on what type of screen it is, you're either not pushing hard enough (resistive screen) or the droplets are making it think it's being touched in several places at once (if it's a capacitive screen). Just have a towel near by to wipe the screen and even wipe the droplets off of your gloves-- would probably clean up the issue with the random response.
Whoa…. I thought I was the only one that over explains random shit in videos that everyone else glosses over! 🎉🎉🎉
@@Honeypot-x9s haha.. I'm on PC with a keyboard; so I can type things out in a hurry. I can't stand watching videos on my phone, I don't see how everyone does it.
@@calholli I connect my PC to the TV, that way I can use my wireless keyboard or wireless mouse and onscreen keyboard. I also get to use AdBlock....
@@truracer20 Yep.. same here. I have 2 TV's.. both hooked up to a laptop. Using the Logitech k400 and k400 plus.
Me too with my projector. My home entertainment is basically my main PC with an Autohotkey script to change sources, move browser between screens and control my media player (Potplayer).
I've been down that road before. Try to save a buck, and it ends up costing more in the end when you're chasing your tail trying to find out if the cheap parts are bad or something else is wrong. It pays to you top quality parts or oem parts.
I thought for a second Ivan was going to encounter the ever so rare No Parts Required AND No Tools Required repair. He is the mechanical wizard after all…..
xD
i'm not sure if my eyes were fooling me but i think your inventory spark plug (acdelco 41-162) and the existing (ACDelco 41-962)plug had different part numbers. Are they interchangeable ?(8min 33sec)
Another great diagnostic and repair, Ivan! Seems the aftermarket parts did strike again. Possibly, all spark plug gaps are excessive, as it looked a factory bend on the one you adjusted.
"Runs like a Chevy" - I liked that 🙂
I dunno, I think I'd still stick a set of real Delco plugs in.
I offered, customer declined LOL
@@PineHollowAutoDiagnostics Just another cheapskate.
Love the rumble of these big engines.
You just can't beat the sound of a Cummins at idle though.
$200 USD for 1 OEM fuel injectors, you're kidding !
I paid $200 AUD including postage for a brand new aftermarket set of fuel injectors for my 5.7 litre Chevrolet LS1 V8 engine in my Holden Commodore & that was freight from the U.S. to Australia.
The OEM Bosch injectors got clogged with fine dust particles & they need a thorough clean but the generic brand of fuel injectors have lasted for about 140,000 kilometres (11 years) so far,the car starts much easier with the replacement injectors.
Honestly,.I don't know why a 40,000 mile (60,000 kilometre) Chevy truck needs new fuel injectors for,my Commodore has done over 390,000 kilometres now & the engine is original apart from the hydraulic lifters & gaskets !
I would guarantee that injector is counterfeit if genuine injectors are $200 thats $1600 for full oem set. Rough mechanical work loose sparkplug unsecured injector plugs he needs to sack whoever fired the previous parts canon.
Yeah I agree, & what about the missing & poorly fitted fuel injector retaining clips? What a heap of shit previous repair. Fire the last tech's ass! - Or his supervisor!
Those spark plugs are AC DELCO of CHINA.
Ivan hauling butt in a Chevy dump truck with a 5 speed.
Awesome!!!!!
Yup another good fix!! Ivan I replaced pcv and hoses for my friend Jimmy and bruised my rib, yuk!! Now I bought a topside creeper!
Where’s the Launch? Are preferring the Think Tool? Launch has a new update for topology I’m told.
Stabilant 22 a chemical which increases conductivity in connection s used in Avionics .
NAPA sells it .
This may be a good thing to have Ivan .
I have it!
@@PineHollowAutoDiagnostics awesome on pins connectors .
I fix mostly heavy equipment manlifts cranes and loose dirty connections plague such.
I was told Ferrari and Garmin Raytheon avionics approves of Stabilant 22 also.
Most people do not realize die electric Silicone grease reduces conduction but actually used to stop oxidation and water intrusion .
Check the gap. Everyone: break out our wire spark plug gap tool. Ivan: Breaks out the Mitutoyo digital caliper. :)
so people no longer check plug gap ass u me ing the those high paid and trained AI assemblers are 100% accurate
Parts cannon is a Junk Problem w/ today's parts. OEM or junk yard much better choices.
Yeah, if you parts cannon a vehicle with junk parts you are just asking for trouble.
And worst of all people tend to throw away all the OE stuff, so you have to re buy everything to get a reliable car.
@@volvo09 Exactly right!
I need help I have a 1999 Jeep grand Cherokee 4.7 I run it for 30 minutes then it shuts off and won’t start til it cool back down about 20 minute run it does it again has good cam and crank signal when this is happening but the 5 volt reference goes high too 7.5-8 bolts when it doesn’t wanna start on the 5volt reference what you guys think? I replaced pcm same problem? NEED HELP
Sometimes it is necessary to replace all of the injectors, for GM this is usually due to known failure modes of the injector design (could be heat + age related or a design defect). So, you may be faced with replacing all of the injectors when the first one fails because others will follow. However, properly replacing all of the injectors is not trivial or cheap. You first need to get a set of OEM injectors, test for proper coil resistance with the new set, then send the injectors out to be flowed and if necessary also cleaned. You can sometimes buy a remanufactured set that has been clean and flow tested, which is usually the most cost effective. This all takes time, but is needed to ensure that the fuel closed loop algorithm has accurate fuel flow control.
Memberberries nostalgia for me…I learned to drive on a 1960s era Chevy dump truck. First gear was low.
This is the gamble you take when you try to save a buck or two and settle on getting bargain basement aftermarket parts. Sure, sometimes you get lucky and the parts work well enough. But all too often, we all see cases like this. Where a kit of coils or injectors or whatever else it might be, turns out to be defective or broken, right out of the package. Or fail a short time later. But anyway. Nice work on the diagnostic Ivan. Your process of elimination was spot on.
Nice work Ivan, again, you cannot stress enough, USE OE! Thank you Sir
Some folks are simply cheap minded regardless of the benefits and long term reliability a few dollars can be. That 2003 6.0 with those low miles deserves the best because it is one reliable design and has plenty of life left in it. Sadly, some owners will go with all of the cheap plans because they believe its an old "dump truck" and just doesn't qualify for decent maintenance and OEM parts. I found it a hard one to believe when the owner said he will do the spark plugs when Ivan already had one out and could have done them all for pocket change. Tight wad owner. BTW, Delphi parts are as good or better than any AC Delco or GM part. Delphi makes many GM parts for GM.
umm, where's the "platinum" ground electrode button on the old plug.. clearly not there at 8:40 ! it's either a knockoff plug and never had one or someone was fiddling and broke/ripped it off with brute force, while trying to fix the misfire. the original misfire was likely not ignition to start with and likely a fuel injector/wiring, but who knows how many hands have been sawing the bow on the fiddle. 🤪
I’ve had some injector failures on the gm 6.0 engines, mostly in cab and chases school busses. I love the injector drop test on the gm’s very useful indeed. Cheap junk internet parts are just a scourge, but unfortunately are everywhere.
Today, I diagnosed and replaced an O2 sensor on a Kia. I followed Ivan's advice and used the OEM sensor. Problem solved.
Those sparkplugs may be counterfeit, or old. The older plugs in the 4.3L and 5.7L engines had the smaller lettering on them plus were gapped a .060 for the HEI distributors. When they switched to coil per plug, the gap was dropped to .040.
some after market parts aren't so great .. but .. sometimes you get to the point all you can get is aftermarket parts. I am that way with my second car.. its old.. 30 years old.. you can't get anything from the dealer even if you wanted. most you can possibly do is see who was the OEM for the Manufacturer and see if they still make the parts.. I am getting to the point I am thinking I need to stock a shelf of parts i might need in the future because I am already waiting 2 weeks for aftermarket stuff.
Nice fix Ivan. Who knows what other parts were thrown at this engine.
I like the way Ivan doesn't fool himself after his first attempt made no difference. That takes moral courage.
Hey Ivan now you getting somewhere with the spark plug out the Chevy sounds like a Ford kudos
But you said, in your last video that you believe OEM injectors would never be bad
1:24 Couple taps on the tool is mandatory for successful connection!
Seems like I'm always learning new things. Lots of experience auto mechanic giving advice and information. That's awesome.
That's not a micrometer.....They're calipers
"Runs like a Chevy" the understatement of the year. I hear that and i see $$$ signs in the future 😂
Note to self: no eBay or Amazon parts for my vehicles.
They are fine if they are from a reputable source, say like a junkyard. Too bad eBay makes it hard to even filter out Chinese stuff since they removed country filters last year!!
@@rkan2 Used I agree with a reputable seller.
Another defective parts special.
Time to get a bigger workshop as working in the rain ain't too nice....
How come every time I go to read the comments the very first one is a spoiler
Love your methodical train of thought.
I've been trying to fix a gas gauge issue on my 08 nissan quest. Not covered by the recall.
Gauge reads full or empty, p0462 code.
Replaced fuel pump , no change.
Checked all the grounds I could find.
Not sure where to go next. Wish I lived near you I would like to have a professional take a look.
Enjoy your videos, keep it up.
There is recall on this problem and I believe the problem lies w/ the needle gauge itself. I seem to recall that they install a capacitor on the wiring or something like that.
My cheap scanner shows a percentage of tank thats full , my gas gauge quit working also , so i use the computer to check the level
How do you not have more subscribers?
Weird ones r ur speciality Ivan
check nut filter and rodent residences
That firing order seemed odd. Chevy's usually are 18436572.
The LS engines have never been that lol... since 1997. That's old small and big block stuff.
That is the firing order for the older GM V8 engines. The newer LS based engines have a different firing order.
Calipers not micrometers 7:41
It could also have some more loose sparkplugs. Great job as always.
I hate FKn counterfeiters
I HATE liters of displacement. Hate! Has anybody ever figured out why this happened here in the good ol' USA? Part of our identity lies in using US units of measure rather than metric (stop whining - we all learned the metric system in school like everybody else - we just IDENTIFY with the standard system we know and love) What self-respecting gearhead doesn't miss our favorite engines like the 250, 260, 289, 292, 302, 318, 326, 327, 340, 350, 351, 360, 383, 389, 390, 400, 413, 421, 426, 427, 428, 429, 430, 440, 454, and of course, Cadillac's 500? 6.0 liter is 366 cubic inches, and if it was any good, could be remembered as well as any other. People arguing over whether a 302 Ford is 5.0 or 4.9 liters just makes me sad, and remembering the venerable Chevy 350 as a 5.7 is just ridiculous. Oh, and nice diagnosis and great simple repair. Good example of costing more money after trying to save money by cheaping out.
Do you know your website is down? Trying to reach you there for an appointment.
Just fixed it apologize for the inconvenience! 👍
CHEVY THUNDER ..
It's always a payday with Chevrolet!
Eric o ? 😆 Lol
Exhaust not stock. I have 2004 3500 and does not sound like that
It was actually missing the exhaust 😂
its a chevy normal
I like the counterfeit part smell test. If anyone asks you to install something and it smells like a harbor freight store just say no.
Chinese dogshit.
Seen a lot of these 6.0 with weird misfires and a crankshaft relearn fixes it 90 percent of the time. I believe there is a tsb
Those are generally false misfires 👍
Yes is lose or broken spark plug
Congratulations on the 175,000 brotha! Great video as always! But I’m really waiting for that Audi 200 video with the big bad 5cyl turbo. Give me a hint, Independence Day special or nah? 🤔
Du-du-du-da. Du-du-du-da. Sounds funny but a valuable sound to help diagnose the problem. THANKS!!!
Simple rule for me. If you want to run the risk of non-genuine parts. Which I'm not immune to when there is a huge difference in price and it's still a known good brand on an older vehicle.
Always keep the original part/s until you know 100% it's fixed. I would want all my OE injectors, plugs and coils back from whom ever swapped them out!
Not bad of a fix! Sloppy work from previous work! Wow loose spark plug!!! Never seen that happen! I had a customer with bad misfire with bad injector, it was way flowing to much fuel, hydrolocking the engine! Had to overhaul everything in that 5.3 engine! Great video, testing like that! Awesome Ivan!
That's a "digital caliper", not a micrometer. Micrometers will look more like a C-clamp shape with a little mechanical knob on one side and they read much more precisely. I've watched hundreds of hours of milling and lathe work over the years, so I'm basically a youtube expert at this point. :)
Yup...vernier caliper
Digital " vernier" caliper.
Or they're sometimes called - "Vernier Calipers"; VERY NEAR calipers!
How many times I've heard" my mechanic got em at PICK YOU PART, he said they looked the same"
GM= Garbage Motors
The gap on the plugs I took out of my 60k mile 1996 F150 straight six were almost half an inch and it ran pretty darn well
I was taught to and always do, check brand new spark plugs before I put them into an engine, sometimes they are within spec, mostly, at least one is out. This is with OEM parts from reputable mfrs. I like to get new plugs gapped to as near identical as possible, it makes me smile how noticeable the difference is, like a little tune up.
well that was so 1900's now best to replace engine or vehicle dad loved doing tune ups but mpg suffered he liked an engine to perform not limp along
@@jhonditch4269 I agree.. spark plug gap a little off.... new engine required.
Touchscreens... As soon as a drop of water gets on there they stop working until they are dried off.
Great observation..i agree. I thought ivan was gonna punch his scanner😮
@@pootthatbak2578 Yes, I've done that. It isn't very productive, though. ;P
12:30 had this same problem with my volvo 940. It was horrible to diagnose, i there were dead injectors, but there was also an overheating incident due to a bad turbo that also cracked the head which led to a blown head gasket, but before the head gasket totally blew out between cylinders 3 and 4 I was tracking down a dead 4th cylinder. But swapping injectors around seemed to revive the cylinder a bit? It wasn’t making sense. In retrospect, the head gasket was sealing sometimes and not sealing at other times? I put in a new head gasket but the temps are high and compression is 20 psi lower on cylinder 4 and there’s coolant coming out of the exhaust valve during warm up but then closes. It’s weird as hell, there’s little loss of fluids but the temps are high.. have to check the coolant pressure and could try a used head but I’m probably swapping engines and transmissions
Needs a muffler
Why would spark plugs need replacement on such a low mileage engine? Shade tree mechanics keep you in business. It is amazing how many you tube videos show that many repairs are the result of earlier "repairs". I am not a mechanic by profession but I can replace and engine and you will not find loose and missing hardware when I am done.
If one spark plug was loose and had an excessive gap others could too
I'm sure. Owner was going to replace them all :)
@@PineHollowAutoDiagnostics Yes and likely install them just like before, incorrectly.
Well unless you did it and didn't say anything. But if one plug is loose and wrong gap. What about the others? Of coarse you figured it out. Did the owner keep the old parts?
Thanks Ivan!
The guy had some problems and someone gave him the cheapest parts tune-up, even injectors which is a bit excessive at 50K miles.
Plugs and injectors should last well beyond 40,000 miles.
Your wiring diagrams are so much better than what we use. Have you ever used pro-demand? Are they as bad as I think?
Measure the resistance of the plug. Counterfeit are always very high compared to oem
👍👍
$ 200.00 for one GM injector LOL
I can offer a comparison or some history, although a different company, motocraft. i needed 6 injectors for a 300 liter inline 6, yes, the famous 4.9 used in a million F series trucks. They cost 100 bucks each from a dealer in 2003. Always been an expensive part
@@pootthatbak2578 Wow! That was a huge engine in that truck... 300 liters is over 18,000 cubic inches. 🤣
Free 99 at any self serve wrecking yard lol
Great
👍
Pretty low mileage.
Great way of diagnosis..scan tool really helped alot 👍🏿 👏..cheers
Sell them an exhaust repair so readiness monitors run $$$$$$
No come backs 👍
Thank you for the great and very informative thorough videos. What model of Think Tool scanner do you use?
Привет, Иван!
Правильно ли я понял, что цена новой форсунки $200 ? Довольно дорого... Почему бы не попытаться промыть ?
Great job, Ivan! And I like that truck!