I like your presentation. Easy to understand. Engine light came on. Wouldnt hold idle at stop light. Got a p0303 code. Pushed down on coil caps tp ensure good connection. Engine light went off and Idle is back to normal. Thanks.
While it is always advisable to try the least expensive fix's as possible first, they are not always successful. On a 2011-2013 F150/Mustang Coyote 5.0 you will often get misfires on the drivers side bank. I would always suggest putting in new plugs and swapping coil packs from non misfiring cylinders first, even changing the coil pack connectors and pins. Once this has been done though, its time to consider other possibilities that are quite a bit more unpleasant. The next logical step is to do a manual compression test and a leak down test. These 2 tests will tell you if you have a piston/ring problem or a Valve problem. The 2011-2013 year model Coyote engine is well know to Burn piston rings and Burn Valves due to erosion. On a normally cared for and driven vehicle with 130,000 + miles, it is most always going to be a burnt or eroded valve. There was a defect in the materials that the valves were made of that was changed late in the 2013 model year. These defective valves suffer from erosion where they contact the valve seats. This reduces compression and over time as it gets worse will eventually misfire and throw a misfire code. At this high of a mileage it is usually recommended to replace the entire engine. However this can also occur on lower mileage engines as low as 50,000 miles. In that case it is acceptable to rework both heads with new valves and have the valve seats recut. Currently Ford does not have these engines available as long blocks, but are available in the aftermarket. Just do your research on the company and check the Better Business Bureau rating before doing business with anyone. engine replacements costs are generally in the $5000 range for the long block and another $1000+ for additional wear parts depending on mileage and $2000 installation labor. Prices vary widely depending on your service provider though so get multiple estimates.
After all this heavy rain my car wasn't running well and 3 cylinders had misfires at the same time. Let it idle and revved it up and after a few minutes it was completely back to normal
Not necessarily. 4 cyl the center cylinders were getting just enough fuel but the furthest cyls nos 1&4 were not. Fuel filter and fuel pressure regulator fixed that problem
I have a P0303 on my Pontiac Grand Am. Changed the fuel filter, swapped ignition coil, and was trying to replace the fuel compression valve but decided not too lol it was too hard to take off so I gave up.
@@MrOnceinside Our 2004 Toyota Camry has the fuel filter inside the fuel pump which is inside the gas tank. You access it by taking the backseat out. Here's a video on replacing the filter in an '04 Camry: ruclips.net/video/qTzqv6V5h8M/видео.html
Misfire,[ Specifically Cylinder 3 ]per the OBD .Start with easiest diagnosis. Check for any broken or cracked wires to that cylinder, then check spark plug, then the coil. If your passed that and all is good, and it's still misfiring, take it to a professional mechanic for possible deeper issue.
I’m currently shopping for a used work truck. Surprising how few owners have ever changed coils & plugs. People really expect cars to run forever without maintenance.
The dealership told me my 2017 Jeep Grand Cherokee Laredo COOLANT IS GETTING INTO NUMBER 3 CYLINDER CAUSING A MISFIRE. They said I need a need engine. Do I need a new engine because of this issue?
The Maf sensor on my pickup went bad and caused a P0303 code and a right side running rich code. I replaced the Maf, engine light went away but the misfire and sluggish running is still there.
ok so i had this misfire code p0303. i changed the coils around, then it went to p0300. So i got all new spark plugs and coils, still p0300. I thought since i switched them around like you said and if the code changes its the coils, welp, it did change and still staying at p0300. smh
So the cylinder 3 misfire would be the actual #3 cylinder and not the 3rd cylinder in the firing order correct? I have not been able to get a definitive answer on this.
i have misfires in 3,1 and 6, i was hoping it was just a valve cover gasket and simpler vacuum seal, waiting on results from the compression test now. hopefully its not the head gasket fml
I have a P0301 and P0303 misfire code. I changed all the plugs, all wires, all coils, cam and crankshaft position sensors, all the injectors, on a 2002 subaru impreza outback sport 2.5L and engine light keeps coming back on.
Any suggestions recently had a p0303 code pop up on my bmw currently changed out the spark plugs and coil packs, now all of a sudden my vehicle is throwing out a bunch of white smoke from the exhaust any ideas don’t know much about cars just hoping it’s not a blown head gaskets. Thank you’ll
I have a 2022 Honda Insight 1.5 liter with 58k miles giving a persistent code P0303 Cylinder 3 Misfire Detected. I have cleaned spark plugs and moved CYL 3 plug to CYL 1, moved CYL 3 ignition coil to CYL 2, cleaned fuel injectors and moved CYL 3 injector to CYL 4, cleared all CEL error codes using my OBD2 scanner. The P0303 misfire problem stays at CYL 3 even with original spark plug ignition coil and fuel injector all moved to different cylinders. I'm completely at a loss as to what could cause this misfire, I've thought about maybe dirty fuel filter but I would think this would effect ALL cylinders and cause misfiring, not just ONLY on CYL 3. The rough idle and misfire ONLY happens while the engine is cold first start of the day, after the engine warms up for 5-10 minutes the misfire goes away.
My 2002 Honda Civic LX shows P0303. The coils test OK. I tried to exchange #3 and #1 coils. Code P0303 still points to #3 coil. Did I misidentify the coil? I changed all 4 spark plugs. Previous to this I changed the Cam Sensor, the Evap Canister, both O2 sensors. A month before this P0303 code I did momentarily overheat. I was low on Cooolant and oil. All codes are gone except the P0303.
Hey i had washed ur full video. I have a P0301 misfire in my 07 mazdaspeed 3 and i did changed all my spark plug 2 months ago, and i did test my coils and they r good.. i have the p0301 and my mazdaspeed is shaking too.
After you washed his video ... These are your words main man. Anyway im sure after you washed his video it was no longer veiwable especially if you used soap as well as the water.... WTF..? Or were you sippin on the old cough medicine bottle.
misfire can be caused also by timing (toothbelt jump,bad service change of timing belt,...)and bad compression .... (like foreign object taking space from cylinder,like carbon deposit if its too much ,etc...),also video is not about "simple fix" you are intelligent guy use correct words ,otherwise good video man
Replaced all 4 plugs on my 2016 Hyundai Elantra. Still getting the code. They still needed changing though. Saw a thing on another video. Get a low voltage pen. $15 at a hardware store. Touch it to the coil while the engine is running. If the light doesn't come on it's bad.
Chevy cobalt throwing this code. Hard start and idle. Checked injectors, spark plugs and coils. All fine. Going to try a compression test to see. And check the wires. Hoping it’s one of those 2 🙃
I received the p0303 misfire code and it comes on with a blinking stabilitrak light. The stabilitrak light disappears after I warm the car up turn it off and turn it back on. However the check engine light continues to stay on. Car runs and sounds normal during performance. On a cold start it will back fire a couple times. Anyone got any clue on what this could be?
I have 3 coils that firing 3 that's not I changed spark plugs and new coils I took off one coil to see if there was a spark no spark and car didn't die down what do you think is the problem
I've got a Mazda Cx-7 07", with Cylinder 3 Misfire and Intake Manifold Runner Control stuck closed bank 1, would they be related or are they separate problems?
This happens to me every first start of the day, cel will blink and every few days itll stay on. P0303. After my 4.3l vortec gets up to operating temp itll go away shortly after and i wont have an issue for the rest of the day. Im thinking intake and/or head gasket may be the issue. When i took plug wire 3 off the distributor a bunch of dust like debris poured out. Obvious problem on cylinder 3 just by looking at the contacts and the #3 hookup on the cap
i traced my p0303 problum down to a wire connection on the #3 coil pac the red wire had seperated inside the insulation after an hour of trying to soilder it back togather no more cil 3 misfire
I have a question about the P0303 error code. This code denotes a misfire at cylinder 3 but I found a website that states that a common mistake people make is that the P0303 code is referring to the third cylinder in the firing order, not cylinder number 3. The article states: "P0303 is a cylinder specific misfire code, which means that Cylinder 3 is misfiring and causing the code. An important thing to understand when finding the location of cylinder 3 is that it's going to be the 3'rd cylinder in the firing order of the vehicle, and not the 3'rd cylinder that you might see when looking at the engine." My 2006 Mercury Montego has a 3.0Liter v6 with a firing order of 1,4,2,5,3,6. The third cylinder in this firing order would be cylinder 2. Do I have a misfire in cylinder 2 or 3? Can you please clarify what is meant by cylinder 3? Thank You
This is a great question that I wish I knew the answer too. Thanks to you ima ask my mechanic tomorrow when I go to the dealership. Glad you brought this up.
I know this is old but I have watched many many mechanic videos and worked on my own vehicles and when your OBDII code calls out a specific cylinder code it means the physical location of that cylinder. It does not mean firing order. I am curious where you found that article.
Replaced all 4 plugs and coils still ran rough noticed 2 wires on fuel injector cylinder 3 were frayed and broken Replaced with new wire runs great so at least it has all New ppl plugs and coils
I got this code and i change the coil, but still the problem is there. Do u advise me to change the fuel filter and fuel pump? merceds glc300/ 43k milage. Thanx
One idea, if it helps. Start the engine at night, look to see if there is any arcing at plug wire number 3 or whatever wire the scanner mentions. If number 3 cylinder misfire, then dont go buying things but check that one wire first---------number 3.
find yourself someone who knows and works on cars , vaccum leak, valve guides and seat , loose wire harness bad coil or grounding wiring to mention a few possibilities btw common sense not always apply when it comes to this modern headaches I mean cars lol wait till they go full electric lmao be safe
I had a misfire on a 2010 Tucson change out 4 spark plug and 4 ignition coils car crank but won't start crank shaft sensor came up then I un hooked the battery and rehooked it and then the camshaft sensor came on scanner so now I have 2 sensors in and i'm gonna change the coolant sensor too I don't have many friends but I have one to help but those sensors on finding them is heck had to beg people in a Hyundai form to get 115 pictures of everything under the hood these sensor are my last try and I don't know I did this far and got a friend to help I hope it works
Okay I have a change 2 spark plugs back-to-back along with a brand new ignition coil and I put the oil Original Kia ignition coil on cylinder 4 but I am still getting a misfire on cylinder 3 while driving blinking engine light should I try the fuel filter I have changed everything under the hood multiple times ignition coils the ECU I have to replace four alternators I also have oil consumption and I've changed two catalytic converters 2015 Kia Forte Coupe EX along with getting all of my recalls done at Kia something is wrong with this car let's not forget about the battery replacements 3 and 5 years I'm also getting po 2191 code I did not get this code until I changed my catalyst converter and then I had the mechanic we change and upgrade to a better catalyst converter and I am still getting both codes
What if it throws a cylinder 3 misfire like every once once a month what should I look for I wasn't going to start with the spark plugs till I saw this video any ideas
Just got my 2010 Corollas engine replace that had 130k miles cuz of this problem . My step dad to who’s a mechanic got me a 2014 engine with 25k miles for 1500 and Oml I love my car so much I was going to trade it in for a new q50 but now I just wanna keep it and save more of a down payment to still take out the other part
Hi there holden cruze petrol 2013 very bad misfire code p0303 #3 cylinder take out spark plugs 4 off them all black and dirty replace new one and have same problem all 4 spark plugs black and dirty only 10 seconds start car any help thanks
I've changed everything already, Coils, Sparkplugs, rewired new coil clips since I had broken ones, changed new MaF Sensor not cheap, cleaned filter, made sure intake box is sealed properly and I still have codes P0300, P0303, P0352, P0353, I'm so stressed out this is my only car to work and for winter I need to fix it but audi or mechanic will charge me up the ass, I'd rather do it my self! One thing I will mention is when I rewired the coil harness where all the ignition Coil wired are tucked in (harness cover) I broke that trying to open it so yes even tho my wired are rewired right my harness is open and wires are exposed, did order the new harness cover, could that be the cause of all these codes? Or did I connect something wrong I doubt it Im sure I rewired everything right! My only option right now is to order a new fuel filter.. I need help guys 😒, By the way this is for my 2010 Audi A4 Quattro 2.0t I4 🤦🏻♂️🤦🏻♂️
Do a compression test you can rent a compression tester from autozone and check what the compression is supposed to be if it’s to low then the problem is internal if it’s good then maybe it’s a fuel injector or evap leak or somethin stupid
Saw that code and engine light today on my 2012 VW Jetta =( Shit =| Nice video. Good and fun info delivery ;) Feel a bit better after watching it. Will see how I feel after visiting my mechanic tomorrow =J
My problem was misfired on number one cylinder p041 After switching injector from number to three the po303 occurred . So I think the problem is the injectors
@@falsedragon33 it’s actually down right now my guy . I don’t know what’s wrong it . It was over heating on me a lot and every ride I would stop and turn off the car and take off the radiator cap to relieve the pressure and put new water . Literally did this every ride. And it just wouldn’t turn on one morning so it’s been sitting since. Shit sucks
@@searchdaone8130 oh, that sucks. Hope the heat didn't get to the cylinders. Wish you the best. If you ever dare to tackle it, I'm more than willing to help as much as I can.
Here a little known tip... when repairing forgine cars like Nissan, close isnt good enough. I replaced coils and plugs on 07 vq3.5 from parts store platinum ngk plugs and aftermarket coils on all 6. Saved over half price cost from dealer. And guess what, ran worse than it did b4 i took apart. Multiple cylinders misfire from po303. Wtf. Took back apart. Bought oe coils from dealer. And runs like a top. Cheap coils output vary and close isnt good enough. Always use oem parts especially if there hidden under your intake dont want to do that twice. Lesson learned.
I like your presentation. Easy to understand. Engine light came on. Wouldnt hold idle at stop light. Got a p0303 code. Pushed down on coil caps tp ensure good connection. Engine light went off and Idle is back to normal. Thanks.
Thanks for watching, Matt! Happy and safe driving 😊
YES. 2014 KIA soul... fixed my p0303 and p0304 with new ignition coils! Sweet saved big labor costs and didn't take long at.all. Thanks
Excellent video, very concise. Nothing’s even wrong with my car. I just enjoyed it.
Coils and spark plugs, eBay 100 bucks 😎, doing your own labor, Priceless 💥
While it is always advisable to try the least expensive fix's as possible first, they are not always successful. On a 2011-2013 F150/Mustang Coyote 5.0 you will often get misfires on the drivers side bank. I would always suggest putting in new plugs and swapping coil packs from non misfiring cylinders first, even changing the coil pack connectors and pins. Once this has been done though, its time to consider other possibilities that are quite a bit more unpleasant. The next logical step is to do a manual compression test and a leak down test. These 2 tests will tell you if you have a piston/ring problem or a Valve problem. The 2011-2013 year model Coyote engine is well know to Burn piston rings and Burn Valves due to erosion. On a normally cared for and driven vehicle with 130,000 + miles, it is most always going to be a burnt or eroded valve. There was a defect in the materials that the valves were made of that was changed late in the 2013 model year. These defective valves suffer from erosion where they contact the valve seats. This reduces compression and over time as it gets worse will eventually misfire and throw a misfire code. At this high of a mileage it is usually recommended to replace the entire engine. However this can also occur on lower mileage engines as low as 50,000 miles. In that case it is acceptable to rework both heads with new valves and have the valve seats recut. Currently Ford does not have these engines available as long blocks, but are available in the aftermarket. Just do your research on the company and check the Better Business Bureau rating before doing business with anyone. engine replacements costs are generally in the $5000 range for the long block and another $1000+ for additional wear parts depending on mileage and $2000 installation labor. Prices vary widely depending on your service provider though so get multiple estimates.
Not reading that
After all this heavy rain my car wasn't running well and 3 cylinders had misfires at the same time. Let it idle and revved it up and after a few minutes it was completely back to normal
Fuel filter would affect all cylinders
Great point. Thanks, I just got a 303 code🙄
I had a blazer hit a misfire code felt like the car was done for good when id pass someone ..changed fuel filter fixed it all blew my mind
@@joelmaslonka109 hi what was wrong with yours? Thanks
Not necessarily. 4 cyl the center cylinders were getting just enough fuel but the furthest cyls nos 1&4 were not. Fuel filter and fuel pressure regulator fixed that problem
I have a P0303 on my Pontiac Grand Am. Changed the fuel filter, swapped ignition coil, and was trying to replace the fuel compression valve but decided not too lol it was too hard to take off so I gave up.
Hey thanks, had a fuel additive run through and it was a restricted flow of fuel, STP and it's cleaned, no more check engine
FUEL FILTER... is NOT an easy fix as almost all modern cars have it *inside* the gas tank inside the fuel pump.
Still a good video!
I dunno man. There are ALOT of external filters still. Those large metal cylindrical thread on types like he showed.
The pumps are inside the tank, the filter is inline on the fuel line.
@@MrOnceinside Our 2004 Toyota Camry has the fuel filter inside the fuel pump which is inside the gas tank. You access it by taking the backseat out. Here's a video on replacing the filter in an '04 Camry: ruclips.net/video/qTzqv6V5h8M/видео.html
@@MrOnceinsidewhere is the fuel filter on line on my F250
AND a special tool is also needed in most cases, like my 2001 Kia Sportage 🙄
Misfire,[ Specifically Cylinder 3 ]per the OBD .Start with easiest diagnosis. Check for any broken or cracked wires to that cylinder, then check spark plug, then the coil. If your passed that and all is good, and it's still misfiring, take it to a professional mechanic for possible deeper issue.
P0303 code fix, unplug the wire to the mass airflow sensor....that should fix it
@@maceobane2804 hahahaha🤣
@@isaiahmitchell3032 hahahah try it~ it works.
Great video great video
It makes sense I was driving very slow for 30 mins straight on 20 mph that probably threw off the system
I’m currently shopping for a used work truck. Surprising how few owners have ever changed coils & plugs. People really expect cars to run forever without maintenance.
How would bad fuel only affect cylinder # 3??
A weak spark plug would show up on bad gas.
The dealership told me my 2017 Jeep Grand Cherokee Laredo COOLANT IS GETTING INTO NUMBER 3 CYLINDER CAUSING A MISFIRE. They said I need a need engine. Do I need a new engine because of this issue?
Same!!!!
Bro...
Hell yea thnx to ur video I was able to fix my car🤙🏻
Glad to hear it! Thank you for watching 😊
All plug wires need to be tightly snugged upon each plug.
Sometimes the most simple thing is overlooked.
The Maf sensor on my pickup went bad and caused a P0303 code and a right side running rich code. I replaced the Maf, engine light went away but the misfire and sluggish running is still there.
Great video my Honda has Gotten this code on and off for a while now
Thank you :)
Same. My Honda gets this all the time smh 🤦🏾♂️
what was the problem for you?
ok so i had this misfire code p0303. i changed the coils around, then it went to p0300. So i got all new spark plugs and coils, still p0300. I thought since i switched them around like you said and if the code changes its the coils, welp, it did change and still staying at p0300. smh
Its probably something simple. I wouldnt just start buying several parts. Start out simple. Check spark plugs first.
So the cylinder 3 misfire would be the actual #3 cylinder and not the 3rd cylinder in the firing order correct? I have not been able to get a definitive answer on this.
It is the actual cylinder anytime there is a misfire for that specific cylinder. Not the firing order
i have misfires in 3,1 and 6, i was hoping it was just a valve cover gasket and simpler vacuum seal, waiting on results from the compression test now. hopefully its not the head gasket fml
I have a P0301 and P0303 misfire code. I changed all the plugs, all wires, all coils, cam and crankshaft position sensors, all the injectors, on a 2002 subaru impreza outback sport 2.5L and engine light keeps coming back on.
Oh, if anyone has a 2017 elantra with a misfire issue, your culprit are spark plugs and ignition coils 👍
Any suggestions recently had a p0303 code pop up on my bmw currently changed out the spark plugs and coil packs, now all of a sudden my vehicle is throwing out a bunch of white smoke from the exhaust any ideas don’t know much about cars just hoping it’s not a blown head gaskets. Thank you’ll
Good info...but it seemed like those were dealer prices. Injectors for $600??
I have a 2022 Honda Insight 1.5 liter with 58k miles giving a persistent code P0303 Cylinder 3 Misfire Detected. I have cleaned spark plugs and moved CYL 3 plug to CYL 1, moved CYL 3 ignition coil to CYL 2, cleaned fuel injectors and moved CYL 3 injector to CYL 4, cleared all CEL error codes using my OBD2 scanner. The P0303 misfire problem stays at CYL 3 even with original spark plug ignition coil and fuel injector all moved to different cylinders. I'm completely at a loss as to what could cause this misfire, I've thought about maybe dirty fuel filter but I would think this would effect ALL cylinders and cause misfiring, not just ONLY on CYL 3. The rough idle and misfire ONLY happens while the engine is cold first start of the day, after the engine warms up for 5-10 minutes the misfire goes away.
My 2002 Honda Civic LX shows P0303. The coils test OK. I tried to exchange #3 and #1 coils. Code P0303 still points to #3 coil. Did I misidentify the coil? I changed all 4 spark plugs. Previous to this I changed the Cam Sensor, the Evap Canister, both O2 sensors. A month before this P0303 code I did momentarily overheat. I was low on Cooolant and oil. All codes are gone except the P0303.
PS- Check Engine Light is "STEADY". Not flashing.
Thank you Jon snow
Hey i had washed ur full video. I have a P0301 misfire in my 07 mazdaspeed 3 and i did changed all my spark plug 2 months ago, and i did test my coils and they r good.. i have the p0301 and my mazdaspeed is shaking too.
After you washed his video ... These are your words main man. Anyway im sure after you washed his video it was no longer veiwable especially if you used soap as well as the water.... WTF..? Or were you sippin on the old cough medicine bottle.
Dude explain how to fix the problem we already know how our engines work we just wanna know how to fix it . Thanks
Hey some of us are going at this blindsided.
it doesn't say it's "how to fix it" only what is causing it.
@@ledicarusmedia literally says "simple fix" in the title.
@@jeeporegon9817 which once again does not imply "this is how you fix it by following these steps". It implies that the "fix" is "easy".
@@ledicarusmedia I guess you can't fix "stupid".
1:07
Your spark plug may be upside down, that could explain your misfire :D
ROFL nice catch.
Lmao
What if I have new plugs and coils and wires, and still get the P0303code??
misfire can be caused also by timing (toothbelt jump,bad service change of timing belt,...)and bad compression .... (like foreign object taking space from cylinder,like carbon deposit if its too much ,etc...),also video is not about "simple fix" you are intelligent guy use correct words ,otherwise good video man
Replaced all 4 plugs on my 2016 Hyundai Elantra. Still getting the code. They still needed changing though. Saw a thing on another video. Get a low voltage pen. $15 at a hardware store. Touch it to the coil while the engine is running. If the light doesn't come on it's bad.
Any suggestions for that code on a 2021 Mitsubishi outlander sport?
I have a cylinder 3 misfire and does it cause other codes to pop up such as a evap leak or catalyst system bank system bank 2 ?
Most of the things you cited are not going to affect only 1 cylinder
Chevy cobalt throwing this code. Hard start and idle. Checked injectors, spark plugs and coils. All fine. Going to try a compression test to see. And check the wires. Hoping it’s one of those 2 🙃
I received the p0303 misfire code and it comes on with a blinking stabilitrak light. The stabilitrak light disappears after I warm the car up turn it off and turn it back on. However the check engine light continues to stay on. Car runs and sounds normal during performance. On a cold start it will back fire a couple times. Anyone got any clue on what this could be?
coil plug
@@RoryKriest nope it was a fuel injector
I just got the same lights on my pos chevy equinox stabilitrak light and cylinder #3 misfire.
What if the timing chain is stretched , can I have the same fault code . I renewed bougies and coils
I have 3 coils that firing 3 that's not I changed spark plugs and new coils I took off one coil to see if there was a spark no spark and car didn't die down what do you think is the problem
What if you dont have coil on plug but a single coil pack with 6 plug wires coming off it???
I just replaced all my spark plugs and I just got a cylinder 3 misfire code. And I replaced the pcv valve help
Me too
Did u figure out what it is/was?
Replace your fuel injector #cylinder. We have horrible fuel now a days. Put some seafoam in every 2 months so it doesn't happen again.
Sorry #3 cylinder
Check ignition coil packs on your misfiring cylinder(s).
cylinder #3 can be #3 in the firing order not #3 as in the number on the engine when you look at it
just saying
So what would that mean? Does it still mean that cylinder 3 on the engine is still the problem or something else?
@@NightmareonAnyStreet_ the problem is there just have to find the right cylinder
I’ve never seen prices like your saying on any of the parts. I don’t drive a lambo.
Wow really helpful man thanks
I've got a Mazda Cx-7 07", with Cylinder 3 Misfire and Intake Manifold Runner Control stuck closed bank 1, would they be related or are they separate problems?
This happens to me every first start of the day, cel will blink and every few days itll stay on. P0303. After my 4.3l vortec gets up to operating temp itll go away shortly after and i wont have an issue for the rest of the day. Im thinking intake and/or head gasket may be the issue. When i took plug wire 3 off the distributor a bunch of dust like debris poured out. Obvious problem on cylinder 3 just by looking at the contacts and the #3 hookup on the cap
Would a PO442 small leak in evap cause a PO303
i traced my p0303 problum down to a wire connection on the #3 coil pac the red wire had seperated inside the insulation after an hour of trying to soilder it back togather no more cil 3 misfire
I have a question about the P0303 error code. This code denotes a misfire at cylinder 3 but I found a website that states that a common mistake people make is that the P0303 code is referring to the third cylinder in the firing order, not cylinder number 3.
The article states:
"P0303 is a cylinder specific misfire code, which means that Cylinder 3 is misfiring and causing the code. An important thing to understand when finding the location of cylinder 3 is that it's going to be the 3'rd cylinder in the firing order of the vehicle, and not the 3'rd cylinder that you might see when looking at the engine."
My 2006 Mercury Montego has a 3.0Liter v6 with a firing order of 1,4,2,5,3,6. The third cylinder in this firing order would be cylinder 2.
Do I have a misfire in cylinder 2 or 3? Can you please clarify what is meant by cylinder 3?
Thank You
This is a great question that I wish I knew the answer too. Thanks to you ima ask my mechanic tomorrow when I go to the dealership. Glad you brought this up.
I know this is old but I have watched many many mechanic videos and worked on my own vehicles and when your OBDII code calls out a specific cylinder code it means the physical location of that cylinder. It does not mean firing order. I am curious where you found that article.
Keep it up fixd, really enjoy the scanner
Thank you great video
could the catalytic converter be the problem?
I change the spark. The coil and the injector. I got cylinder 3 misfire circuit...any ideas?
NO
Replaced all 4 plugs and coils still ran rough noticed 2 wires on fuel injector cylinder 3 were frayed and broken
Replaced with new wire runs great so at least it has all New ppl plugs and coils
He mentions several things, but in my experience its not usually 7 to 8 things.
I got this code and i change the coil, but still the problem is there. Do u advise me to change the fuel filter and fuel pump? merceds glc300/ 43k milage. Thanx
One idea, if it helps. Start the engine at night, look to see if there is any arcing at plug wire number 3 or whatever wire the scanner mentions. If number 3 cylinder misfire, then dont go buying things but check that one wire first---------number 3.
@@bennygreene1421 Thanx bro for ur reply. The issue was with catalytic converter. The filter was damage. I change it. Issue solved
@@mohammedalsubhi5028 👍
You lost me when you said it can be a fuel filter. That causes a random misfire. Most vehicles since 07 have no inline fuel filters.
find yourself someone who knows and works on cars , vaccum leak, valve guides and seat , loose wire harness bad coil or grounding wiring to mention a few possibilities btw common sense not always apply when it comes to this modern headaches I mean cars lol wait till they go full electric lmao be safe
@@zacariasblanco9738 funny how you think electric wouldn’t be half the headache as gas cars 🤣
@@5300trilla you got it all twisted boss but ok
I had a misfire on a 2010 Tucson change out 4 spark plug and 4 ignition coils car crank but won't start crank shaft sensor came up then I un hooked the battery and rehooked it and then the camshaft sensor came on scanner so now I have 2 sensors in and i'm gonna change the coolant sensor too I don't have many friends but I have one to help but those sensors on finding them is heck had to beg people in a Hyundai form to get 115 pictures of everything under the hood these sensor are my last try and I don't know I did this far and got a friend to help I hope it works
What ended up happening lol
Okay I have a change 2 spark plugs back-to-back along with a brand new ignition coil and I put the oil Original Kia ignition coil on cylinder 4 but I am still getting a misfire on cylinder 3 while driving blinking engine light should I try the fuel filter I have changed everything under the hood multiple times ignition coils the ECU I have to replace four alternators I also have oil consumption and I've changed two catalytic converters 2015 Kia Forte Coupe EX along with getting all of my recalls done at Kia something is wrong with this car let's not forget about the battery replacements 3 and 5 years I'm also getting po 2191 code I did not get this code until I changed my catalyst converter and then I had the mechanic we change and upgrade to a better catalyst converter and I am still getting both codes
What if it throws a cylinder 3 misfire like every once once a month what should I look for I wasn't going to start with the spark plugs till I saw this video any ideas
Oreillys has coil packs for 50 bucks btw..
Awesome! Thanks for the tip!
Bullshit try 189
Thx bro. Great vid. Great scanning equipment
Show me a video of how to fix a P30 po303
Thanks!
Just got my 2010 Corollas engine replace that had 130k miles cuz of this problem . My step dad to who’s a mechanic got me a 2014 engine with 25k miles for 1500 and Oml I love my car so much I was going to trade it in for a new q50 but now I just wanna keep it and save more of a down payment to still take out the other part
Thank you
Would a car scanner be able to diagnose a dead cylinder?
Don't know about that. I found this code from an OBD2 scanner
Is this problem something your warranty should cover
I just subscribed❤
My Mercedes Benz Smart 2003 model not starting engine but my CX232712 detector showes no error what should I do?
great video - thank you for your help
my car only has a miss when it is cold but once it is warm later it dont miss what do you think
oh and my car is a 2001 chevy impala
Intake manifold haskets.
Which one is the third cylinder???
Can you create a P0201 video please
How a bad fuel filter can only affect just one specific cylinder, No.3 ? The problem should be random, isn't it?
I have p0303 p0420 p1415 codes but I think fixing the p0303 will also fix the other codes
Could also be lambda 02 sensor
I changed out my coil pack spark plugs fuel filters and still reading a p0303
Fuel injectors?
Wow, not one mention of the ignition module. Smh
Hi there holden cruze petrol 2013 very bad misfire code p0303 #3 cylinder take out spark plugs 4 off them all black and dirty replace new one and have same problem all 4 spark plugs black and dirty only 10 seconds start car any help thanks
I've changed everything already, Coils, Sparkplugs, rewired new coil clips since I had broken ones, changed new MaF Sensor not cheap, cleaned filter, made sure intake box is sealed properly and I still have codes P0300, P0303, P0352, P0353, I'm so stressed out this is my only car to work and for winter I need to fix it but audi or mechanic will charge me up the ass, I'd rather do it my self! One thing I will mention is when I rewired the coil harness where all the ignition Coil wired are tucked in (harness cover) I broke that trying to open it so yes even tho my wired are rewired right my harness is open and wires are exposed, did order the new harness cover, could that be the cause of all these codes? Or did I connect something wrong I doubt it Im sure I rewired everything right! My only option right now is to order a new fuel filter.. I need help guys 😒, By the way this is for my 2010 Audi A4 Quattro 2.0t I4 🤦🏻♂️🤦🏻♂️
Do a compression test you can rent a compression tester from autozone and check what the compression is supposed to be if it’s to low then the problem is internal if it’s good then maybe it’s a fuel injector or evap leak or somethin stupid
@@andrewdamico3787 Alright just got the tool today from Amazon will be doing it tomorrow on my day off, let's see what comes up
90s Kid look up what the minimum compression should be on your car it’s different for every car
@@andrewdamico3787 I will thanks man!
Did you get it fixed?
No I bought new coil for all four cylinder and 4 new spark plugs checked wires and vacuum leaks but nothing
Saw that code and engine light today on my 2012 VW Jetta =( Shit =| Nice video. Good and fun info delivery ;)
Feel a bit better after watching it. Will see how I feel after visiting my mechanic tomorrow =J
how much did it set u back? saw the same thing on my 2012 jetta as well yesterday
Can that make you have no oil pusher and not START
I have a 2019 Hyundai Accent and I replaced all my spark plugs but still have p0303 & p0304 misfires on fixd & my car shakes
Did you check your ignition coils?
@@codacreator6162 yes! It wasn’t that :/
My problem was misfired on number one cylinder p041 After switching injector from number to three the po303 occurred . So I think the problem is the injectors
Fuel injector was bad?
I have change the coil but still the misfire
This video right where???
Congratulations excellent video!
Wtf do you get these outrageous numbers for parts and labor. This guy needs to do research on theses prices. Giving or these false prices.
You are wildly overstating prices of items. The cost is not so bad honestly.
My SUV uses LPG. It is possible that the error code appears even if there´s nothing wrong with ignition??
I want to know the answer too
I have an infinity g35 P0303 and I’ve changed my coils packs (OEM) and sparks ⚡️ Ngk. This didn’t fix the problem :/ any help ? Good looks man
If it was the coil, you would have most likley thrown a p353. Did you get this fixed?
@@falsedragon33 it’s actually down right now my guy . I don’t know what’s wrong it . It was over heating on me a lot and every ride I would stop and turn off the car and take off the radiator cap to relieve the pressure and put new water . Literally did this every ride. And it just wouldn’t turn on one morning so it’s been sitting since. Shit sucks
@@searchdaone8130 oh, that sucks. Hope the heat didn't get to the cylinders. Wish you the best. If you ever dare to tackle it, I'm more than willing to help as much as I can.
I got p0303 will buying a wire set and replacing it fix it? Also got p0171 what can that be?
Probably no wire set in there
I had same exact thing. Code 171 for a few weeks, and then this morning 303. Uggggh
I just had mine fixed its malfunction fuel injector
Here a little known tip... when repairing forgine cars like Nissan, close isnt good enough. I replaced coils and plugs on 07 vq3.5 from parts store platinum ngk plugs and aftermarket coils on all 6. Saved over half price cost from dealer. And guess what, ran worse than it did b4 i took apart. Multiple cylinders misfire from po303. Wtf. Took back apart. Bought oe coils from dealer. And runs like a top. Cheap coils output vary and close isnt good enough. Always use oem parts especially if there hidden under your intake dont want to do that twice. Lesson learned.
I have a po301,302,305 random misfire