my 2017 Silverado just hit 100,000 miles and started shaking, it’s only misfiring on cylinder 8 and I’ve changed the plugs,spark plugs and ignition coil but it’s still shaking and misfiring, this was very informative thanks.
@@blakefreytag4190 I had the same issues. Changed the injectors on my 2014 Silverado with only 69K miles. all 8 looked terrible. The intakes were filled with a ton of carbon soot. I ran a GDI cleaner through the intake after doing the job. rough idle
My 2017 Silverado has the P0304 error code. So its a misfire on the #4 cylinder. Rough idling, shaking, etc. I am fearful it may be another fuel injector has crapped out! Apparently the 2017s have had many issues with their fuel injectors. Working on it again, today to trace down the problem(s)!
Dude thanks for making this, I have a 2015. Truck started running weird, read the codes misfire cyl 8...... Sure enough fuel injector totally blown out and even melted the connector
I bought my 2002 Silverado 4.8liter V8 brand new and still own it, ive taking great care of it,,it still runs good, has original alternator, check engine light has never came on once! My check engine light came on at 400 miles on my 2023 Colorado Trail Boss 😖
If you put the crow foot on at 90 deg to the line of the torque wrench, it will not create a difference in the amount of torque applied to the fastener from what the wrench is set for.
Having similar issues, p0107 & p050d, could this be from faulty injectors ? Or will injectors throw its on code. Sounds like sucking air from under intake. Replace injector seals but not injectors still same codes. Any help greatly appreciated
Good info. Another way to deal with the crow foot torque issue is just orient the crow foot off the side of the head. That gives it the correct lever arm distance the lateral offset doesn't affect the torque calculation
@Kp77 I recommend giving your vin to the dealer and having them tell you part number. Then you can either buy it on the spot or search with that number. There may be variations.
I have a 2014 5.3l Missfire cilinder #5 😭change all spark plugs, #5 coil And still do the same ,now thanks to this video i know and im sure i will have to replace #5 injector but now like you mentioned i have to change all 😭😭😭and why chey are changing a lot of things on the 5.3 ?.and older models no issues ,but this 3 or 5 years old are giving us hard time and more $ to get them running when our older models dont compare to this,, if is because they want us to save on fuel, i prefer to spey on fuel then parts or shops that charges thousands of $$😭😭
I did but those are commonly reused but you won't know for sure if they are ok until you get it off. Personally I would replace or at least have kn stand by, they all come in a kit and not that expensive.
Hey Paul where are you located at? Can you work on mine ? It’s a 2016 V8 6.2 liter. Code P0208 misfire cylinder 8 and Code P0308 ignition coil number 8 I see you got all the necessary tools knowledge and information needed.
I have the exact same issue. Same codes, same carbon build up, same everything. I have been thinking this is the issue for months but this just makes me feel less crazy. I didn't want to pull the injectors because i have to replace parts just to pull them. Now i don't feel so bad about doing it.
Great video! Was there any noise or ticking prior to the diagnosis or repair. I had my drivers side fuel rail replaced and now I have a ticking noise and the P0305 is back along with a P219A. I smell gas occlusion when I start the truck. Thank you!
@Paul Kelly how did you clean the injector ports? I’m currently replacing injectors due to P0306 misfire. I have fuel rails and injectors out but noticed injector ports are pretty dirty. How did you go about cleaning them without having debris going into the cylinder ? Any information is helpful! Thank you for your time!
Your best option is probably walnut blasting. But I used a GDI cleaner on a pipe cleaner type brush. This was after I vacuumed up all the debris i could. Anything that fell in the cylinder would be very small carbon pieces from brushing. Not a big thing.
rotate the cylinder to TDC and this will close the intake valve where the debris will not go into said cylinder. Rotate using a 36 mm socket and rachet on the crackshaft bolt.
It sounds like an exhaust leak. You can hear the compression blowing out of that particular cylinder and spraying water in that area changed the sound which helped pinpoint the source.
great video but how did you go about getting the fuel injectors out to start with? i have been trying EVERYTHING i can think of to get these dam,n things out and nothing has worked. i even got the tool still no luck
Preferred would be the tool. Second would be a prybar, I have one that has adjustable angles, kind of like a "ladys foot" type. Worst case, slide hammer with a hook. Although I would be concerned with damaging the fuel rail.
Yup Ihve had the same issue, in fact the fuel rail now needs replacing and cylinder 7 injector tip is inside the chamber. What would you guys suggest for taking it out ? I turned the crank manually it wouldn’t go passed certain degree. Any help would be appreciated
Having a misfire on cyl 5 and 7 on a supercharged 2014. new plugs wires and 2 coils later same issue still missing on boost. passive driving is ok. Compression test showed 100 psi in 5and 7. 135\145 in all the rest. What was the compression in your test?
It's been a while so i don't recall but the difference between cylinders is as or more important than the reading. 5/7 should not be that much lower. You probably realize that the cylinders being next to each other and both low are pointing toward a head gasket. I would proceed with a cylinder leakage/leak down test. I have videos on that too. If you pressurize cylinder 5 on TDC compression and you hear air blowing out the cylinder 7 hole and vice versa you will need to pull the head and check for blown head gasket on the thin part between those 2 cylinders. Also check for head warpage or crack, I have videos on both of those too.
Is this common on the 2014-2018 Silverado? I'm getting the same code p305 changed the spark plugs and the coil but keep getting the stuttering. This time with no code p305
Anytime you are disconnecting fuel lines you should yes. But do you NEED to? Lots of techs don't follow the procedure. But if it's not something you do all day i would follow service manual pretty closely. If the truck is still together just pull out the fuel pump relay and run the engine for a few seconds till the fuel is sprayed and pressure will be relieved.
One question ,, did you go and buy the injectors at chevy dealership original parts ? If you did , im guessing its still the same product,,,, or did you went to get them somewhere else?
Yes OEM GM parts, but they do sell OEM at places other than the dealer. Rock auto for example may have ac delco options which sometimes is identical go oem and other times comparable to oem.
Was this a constant misfire or sporadic for this truck? My 2017 6.2 has been having a sporadic misfire that I think may be an injector issue. AFM is turn off. I've replaced the plugs and wires. I have a sporadic misfire on 5, but only really at idle. Then I have a sporadic misfire on 4, but only above about 35% throttle and in 7th or 8th gear. Both are totally sporadic and may not happen for a couple of days... or happen everyday.
This was missing all the time. You may be onto something with your afm thoughts, he just called me describing a similar concern with a p0300 and a ticking. After being disabled doesn't rule out a collapsed lifter issue. A compression test may shed some light.
@@paulkelley86 I thought that too, but I don't have any ticking at all; not even the classic GM startup tick that I'm used to from my 1998 Yukon. It just sporadically idles a little rough (#5) or runs like crap (#4) driving uphill on the interstate. At this point I've got a dedicated screen setup on my tuner to show misfires for each cylinder and it's always the same with 4 or 5.
hey man, great video. im currently in the process of doing my truck, i actually broke the line plastic piece going into the engine at 25:23 do you know what that is called by chance?
Of it is what I think you are referring to that should be the pcv hose or pcv breather hose. But to be honest I suggest you go to the dealer with your VIN and ask the parts guy to print the diagram and you can identify which number it is and be correct every time.
You did a fantastic job on explaining and showing the work you did. I’m impressed how well organized you have your tools and great picture skills for working with one hand. Thanks a lot for sharing your knowledge where are you located? I could probably use your work.
I just had new fuel rail installed and now have low compression and misfire on one cylinder. Truck cab smells like raw fuel and motor has a noticeable air pushing/noise to it. Shop says I have low compression, burnt piston, and scrape on cylinder wall. How could this have happened?
You would really want to get some details on the diagnosis. If they are quoting a burned piston and scraped cylinder they must have sent a boroscope camera down the spark plug hole. It it possible to get a photo of that damage? Or And I am hesitant to say because it is not meant to accuse the shop but it is a possibility... Debris fell in the hole when the fuel rail was out, which would go straight into the cylinder. Or a fuel injector was stuck spraying wide open and washed oil from the cylinder wall causing rings to scape the wall. Or its simply a misdiagnosis and the noise is caused by a damaged injector seal which would blow compression by. That would cause the low compression, the noise, and the fuel smell since it is not combusting and simply being pumped back out as an air fuel mixture. That would be my #1, but it's a theory and really the technician is the only person who has hands on the truck to actually diagnose.
@@paulkelley86 Thank you for the response. Truck originally had a cylinder 8 misfire. Was recommended to replace the entire rail assembly. Ever since I got it back cylinder 4 is now misfiring along with the other issues. They said they scoped it but couldn’t provide a photo. I’ve had 2 shops confirm it has low compression. Shop that installed injectors is saying it needs a new motor which is a hard pill to swallow.
Hi ! If i check the part number for thoses injectors it says its for 2019-2022 5.3l.. is it also good for 2014-2015 ? I have the same issues with my 2015..
Goodevening I have a 2014 silverado 6.2l with codes p0420 and p0430 I replaced cats and 02 sensors and still getting the codes back I have good compression on engine. u think I might have a bad injector any tht can be causing those codes to come back any feed back would help me thanks
Short story, not likely. Especially if it is not misfiring terribly. More likely a stuck open injector would cause a fuel trim rich, and a stuck closed/restricted/inop would cause fuel trim lean. The longer story... P0420 and p0430 DTC logic is basically that the post cat o2 sensors are seeing too much variation in oxygen. A good cat should clean that up by absorbing excess, then release when deficient. If there is too much variation, the code(s) set. The next step would be to graph front o2 readings and rear o2 readings to interpret. Bad cats cause those codes all the time, occasionally there are other issues that can, but they would be issues that would cause abnormal air to enter the exhaust which would be picked up by the rear o2. If the cats are working and no weird leaks like that, the rear o2 should be pretty smooth around 0.45 volts. Not a lot of variation. This is because the cat absorbs excess oxygen, then releases it when needed. There should be minimal up and down oxygen/o2 voltage by the time it goes through the cat. Those codes set when there is too much variation. You sure those cats are legit? Sometimes aftermarket dont have the correct amounts of precious metals and dont clean up the variation as well as OEM. Also there is a chance the OEM engineers write the pass/fail thresholds too tight and borderline cats fail, and aftermarket cats fail. The fix in that unlikely case is an ECM reprogram to open up the thresholds which would make the borderline pass. If this is the case there would be a TSB and available software update. I am happy to reply briefly but cant afford to go digging for TSB and what not for you. I would not get fixated on the idea of a bad injector. I would work on a way to monitor and graph rear (post cat or aka downstream) o2 voltage.
@@paulkelley86 awsome thanks for taking time to respond back.yeah I went the cheaper route and bought some cats from rockauto and yes sr. I've heard tht buying aftermarket cats aren't always the best option I'll probably be buying new converters.apreaciate ur feed back.
@@luisSanchez-hu4oi that simplifies, if you were in CA you would need to watch for EO numbers on cats. Basically OEM or the specific CA approved or it wont pass smog here.
They call to replace the s pipe, and I recommend it simply because GM recommends it. I replaced it. The feed pipe from the high pressure pump I did reuse, no issue.
It's been a while since I did this. It wasn't super cheap because 8 injectors, a crossover pipe, and labor but I really can't recall what I charged for this. Hopefully others will comment on this with prices paid.
Hey great video man. Super informative about this subject and a great watch especially with you talking and describing what you are doing. Thank you
Great video I'm about to do the same to my truck so I'm glad I watched this. Thanks for adding the torque values also
I appreciate you making this video
Your good at what you do! Thank you for this video
Great Video, Thanks for the education!
my 2017 Silverado just hit 100,000 miles and started shaking, it’s only misfiring on cylinder 8 and I’ve changed the plugs,spark plugs and ignition coil but it’s still shaking and misfiring, this was very informative thanks.
Have you changed the injector? If so, did it work? My 2015 suburban has the same cylinder 8 misfire.
@@blakefreytag4190 I had the same issues. Changed the injectors on my 2014 Silverado with only 69K miles. all 8 looked terrible. The intakes were filled with a ton of carbon soot. I ran a GDI cleaner through the intake after doing the job. rough idle
My 2017 Silverado has the P0304 error code. So its a misfire on the #4 cylinder. Rough idling, shaking, etc. I am fearful it may be another fuel injector has crapped out! Apparently the 2017s have had many issues with their fuel injectors. Working on it again, today to trace down the problem(s)!
What’s the cost of doing this?
Dude thanks for making this, I have a 2015. Truck started running weird, read the codes misfire cyl 8...... Sure enough fuel injector totally blown out and even melted the connector
The connector repair pigtail is a little tough to come by. Dealer only part. You will gitrdone
how was that misfire? was it at any rpm, cold start, full throttle? type A? i just used top engine cleaner and mine got a little better.
I bought my 2002 Silverado 4.8liter V8 brand new and still own it, ive taking great care of it,,it still runs good, has original alternator, check engine light has never came on once! My check engine light came on at 400 miles on my 2023 Colorado Trail Boss 😖
Great video
If you put the crow foot on at 90 deg to the line of the torque wrench, it will not create a difference in the amount of torque applied to the fastener from what the wrench is set for.
Having similar issues, p0107 & p050d, could this be from faulty injectors ? Or will injectors throw its on code. Sounds like sucking air from under intake. Replace injector seals but not injectors still same codes. Any help greatly appreciated
Good info. Another way to deal with the crow foot torque issue is just orient the crow foot off the side of the head. That gives it the correct lever arm distance the lateral offset doesn't affect the torque calculation
They didn't for this model so I doubt they changed for 2016 but I can't say for sure
@@paulkelley86 what's the injector part number? & is it the same injectors for flex fuel?
@Kp77 I recommend giving your vin to the dealer and having them tell you part number. Then you can either buy it on the spot or search with that number. There may be variations.
@@paulkelley86 OK will do, thanks !
Could you put a wire brush on a drill to clean that bore area
I have a 2014 5.3l
Missfire cilinder #5 😭change all spark plugs, #5 coil
And still do the same ,now thanks to this video i know and im sure i will have to replace #5 injector but now like you mentioned i have to change all 😭😭😭and why chey are changing a lot of things on the 5.3 ?.and older models no issues ,but this 3 or 5 years old are giving us hard time and more $ to get them running when our older models dont compare to this,, if is because they want us to save on fuel, i prefer to spey on fuel then parts or shops that charges thousands of $$😭😭
Same issues with Honda 3.5 engine
My injector #2 failed at 32000 miles and I have to replace all 6
2019 Honda Pilot
Awesome video. Do u have to replace the intake manifold gasket? Noticed that they are individual for each port
I did but those are commonly reused but you won't know for sure if they are ok until you get it off. Personally I would replace or at least have kn stand by, they all come in a kit and not that expensive.
Hey Paul where are you located at? Can you work on mine ? It’s a 2016 V8 6.2 liter. Code P0208 misfire cylinder 8 and Code P0308 ignition coil number 8 I see you got all the necessary tools knowledge and information needed.
I have the exact same issue. Same codes, same carbon build up, same everything. I have been thinking this is the issue for months but this just makes me feel less crazy. I didn't want to pull the injectors because i have to replace parts just to pull them. Now i don't feel so bad about doing it.
Yeah I'd plan on just doing the one bank or all 8. Pretty common come to find out
Great video!
Was there any noise or ticking prior to the diagnosis or repair. I had my drivers side fuel rail replaced and now I have a ticking noise and the P0305 is back along with a P219A. I smell gas occlusion when I start the truck. Thank you!
Yeah this one was ticking and sounded like an exhaust manifold cracked.
I bet you have an injector seal issue and compression blowing by the seal.
@Paul Kelly how did you clean the injector ports? I’m currently replacing injectors due to P0306 misfire. I have fuel rails and injectors out but noticed injector ports are pretty dirty. How did you go about cleaning them without having debris going into the cylinder ? Any information is helpful! Thank you for your time!
Your best option is probably walnut blasting. But I used a GDI cleaner on a pipe cleaner type brush. This was after I vacuumed up all the debris i could. Anything that fell in the cylinder would be very small carbon pieces from brushing. Not a big thing.
rotate the cylinder to TDC and this will close the intake valve where the debris will not go into said cylinder. Rotate using a 36 mm socket and rachet on the crackshaft bolt.
You mentioned water getting rid of the noise. What noise was it making? Can you ellaborate on that please?
It sounds like an exhaust leak. You can hear the compression blowing out of that particular cylinder and spraying water in that area changed the sound which helped pinpoint the source.
great video but how did you go about getting the fuel injectors out to start with? i have been trying EVERYTHING i can think of to get these dam,n things out and nothing has worked. i even got the tool still no luck
Preferred would be the tool. Second would be a prybar, I have one that has adjustable angles, kind of like a "ladys foot" type. Worst case, slide hammer with a hook. Although I would be concerned with damaging the fuel rail.
Yup Ihve had the same issue, in fact the fuel rail now needs replacing and cylinder 7 injector tip is inside the chamber. What would you guys suggest for taking it out ?
I turned the crank manually it wouldn’t go passed certain degree. Any help would be appreciated
Having a misfire on cyl 5 and 7 on a supercharged 2014. new plugs wires and 2 coils later same issue still missing on boost. passive driving is ok. Compression test showed 100 psi in 5and 7. 135\145 in all the rest. What was the compression in your test?
It's been a while so i don't recall but the difference between cylinders is as or more important than the reading. 5/7 should not be that much lower. You probably realize that the cylinders being next to each other and both low are pointing toward a head gasket. I would proceed with a cylinder leakage/leak down test. I have videos on that too. If you pressurize cylinder 5 on TDC compression and you hear air blowing out the cylinder 7 hole and vice versa you will need to pull the head and check for blown head gasket on the thin part between those 2 cylinders. Also check for head warpage or crack, I have videos on both of those too.
Is this common on the 2014-2018 Silverado? I'm getting the same code p305 changed the spark plugs and the coil but keep getting the stuttering. This time with no code p305
Yup
Do I need to bleed pressure off the fuel line before removing the crossover line?
Anytime you are disconnecting fuel lines you should yes. But do you NEED to? Lots of techs don't follow the procedure. But if it's not something you do all day i would follow service manual pretty closely. If the truck is still together just pull out the fuel pump relay and run the engine for a few seconds till the fuel is sprayed and pressure will be relieved.
One question ,, did you go and buy the injectors at chevy dealership original parts ?
If you did , im guessing its still the same product,,,, or did you went to get them somewhere else?
Yes OEM GM parts, but they do sell OEM at places other than the dealer. Rock auto for example may have ac delco options which sometimes is identical go oem and other times comparable to oem.
Was this a constant misfire or sporadic for this truck? My 2017 6.2 has been having a sporadic misfire that I think may be an injector issue. AFM is turn off. I've replaced the plugs and wires. I have a sporadic misfire on 5, but only really at idle. Then I have a sporadic misfire on 4, but only above about 35% throttle and in 7th or 8th gear. Both are totally sporadic and may not happen for a couple of days... or happen everyday.
This was missing all the time.
You may be onto something with your afm thoughts, he just called me describing a similar concern with a p0300 and a ticking. After being disabled doesn't rule out a collapsed lifter issue.
A compression test may shed some light.
@@paulkelley86 I thought that too, but I don't have any ticking at all; not even the classic GM startup tick that I'm used to from my 1998 Yukon. It just sporadically idles a little rough (#5) or runs like crap (#4) driving uphill on the interstate. At this point I've got a dedicated screen setup on my tuner to show misfires for each cylinder and it's always the same with 4 or 5.
hey man, great video. im currently in the process of doing my truck, i actually broke the line plastic piece going into the engine at 25:23 do you know what that is called by chance?
Of it is what I think you are referring to that should be the pcv hose or pcv breather hose. But to be honest I suggest you go to the dealer with your VIN and ask the parts guy to print the diagram and you can identify which number it is and be correct every time.
@@paulkelley86 yea it was the pvc valve after further investigating last night, i appreciate it man!
You did a fantastic job on explaining and showing the work you did. I’m impressed how well organized you have your tools and great picture skills for working with one hand. Thanks a lot for sharing your knowledge where are you located? I could probably use your work.
Do the fuel injector have to be coded for Chevy Silverado 2016 5.3 LT 1500 4wd
I just replaced mine. No, they are stock injectors
I just had new fuel rail installed and now have low compression and misfire on one cylinder. Truck cab smells like raw fuel and motor has a noticeable air pushing/noise to it. Shop says I have low compression, burnt piston, and scrape on cylinder wall. How could this have happened?
You would really want to get some details on the diagnosis. If they are quoting a burned piston and scraped cylinder they must have sent a boroscope camera down the spark plug hole. It it possible to get a photo of that damage?
Or
And I am hesitant to say because it is not meant to accuse the shop but it is a possibility...
Debris fell in the hole when the fuel rail was out, which would go straight into the cylinder. Or a fuel injector was stuck spraying wide open and washed oil from the cylinder wall causing rings to scape the wall. Or its simply a misdiagnosis and the noise is caused by a damaged injector seal which would blow compression by. That would cause the low compression, the noise, and the fuel smell since it is not combusting and simply being pumped back out as an air fuel mixture. That would be my #1, but it's a theory and really the technician is the only person who has hands on the truck to actually diagnose.
@@paulkelley86 Thank you for the response. Truck originally had a cylinder 8 misfire. Was recommended to replace the entire rail assembly. Ever since I got it back cylinder 4 is now misfiring along with the other issues. They said they scoped it but couldn’t provide a photo. I’ve had 2 shops confirm it has low compression. Shop that installed injectors is saying it needs a new motor which is a hard pill to swallow.
Hi ! If i check the part number for thoses injectors it says its for 2019-2022 5.3l.. is it also good for 2014-2015 ? I have the same issues with my 2015..
I would recommend having your local chevy dealer look up by vin. Then you will have the 8 digit part number and can shop around for a best price.
Goodevening I have a 2014 silverado 6.2l with codes p0420 and p0430 I replaced cats and 02 sensors and still getting the codes back I have good compression on engine. u think I might have a bad injector any tht can be causing those codes to come back any feed back would help me thanks
Short story, not likely. Especially if it is not misfiring terribly. More likely a stuck open injector would cause a fuel trim rich, and a stuck closed/restricted/inop would cause fuel trim lean.
The longer story... P0420 and p0430 DTC logic is basically that the post cat o2 sensors are seeing too much variation in oxygen. A good cat should clean that up by absorbing excess, then release when deficient. If there is too much variation, the code(s) set. The next step would be to graph front o2 readings and rear o2 readings to interpret. Bad cats cause those codes all the time, occasionally there are other issues that can, but they would be issues that would cause abnormal air to enter the exhaust which would be picked up by the rear o2. If the cats are working and no weird leaks like that, the rear o2 should be pretty smooth around 0.45 volts. Not a lot of variation. This is because the cat absorbs excess oxygen, then releases it when needed. There should be minimal up and down oxygen/o2 voltage by the time it goes through the cat. Those codes set when there is too much variation. You sure those cats are legit? Sometimes aftermarket dont have the correct amounts of precious metals and dont clean up the variation as well as OEM. Also there is a chance the OEM engineers write the pass/fail thresholds too tight and borderline cats fail, and aftermarket cats fail. The fix in that unlikely case is an ECM reprogram to open up the thresholds which would make the borderline pass. If this is the case there would be a TSB and available software update. I am happy to reply briefly but cant afford to go digging for TSB and what not for you.
I would not get fixated on the idea of a bad injector. I would work on a way to monitor and graph rear (post cat or aka downstream) o2 voltage.
@@paulkelley86 awsome thanks for taking time to respond back.yeah I went the cheaper route and bought some cats from rockauto and yes sr. I've heard tht buying aftermarket cats aren't always the best option I'll probably be buying new converters.apreaciate ur feed back.
@@luisSanchez-hu4oi are you in California?
@@paulkelley86 I live in Texas
@@luisSanchez-hu4oi
that simplifies, if you were in CA you would need to watch for EO numbers on cats. Basically OEM or the specific CA approved or it wont pass smog here.
Did you reuse the s pipe and feed pipe?
They call to replace the s pipe, and I recommend it simply because GM recommends it. I replaced it. The feed pipe from the high pressure pump I did reuse, no issue.
Can i use Dielectric grease for injector oring ?
If it is silicone that will work.
2016 silverado with 150k kms. One injector failed.
Getting all done at once.
Quoted 2800.00 Cdn
Probably whats happening to mine
Why do you have to buy new fuel line??
Manufacturer specified in the repair manual procedure. Could you get away with it? Possible.
You do know, that no change or calculation is needed when using a crows foot, if the crows foot the 90 deg from the head, right!
@hangmann747tinmann8 yeah that's true
Water huh
How much would a job like this cost $?
It's been a while since I did this. It wasn't super cheap because 8 injectors, a crossover pipe, and labor but I really can't recall what I charged for this. Hopefully others will comment on this with prices paid.
I've seen as low as 1800 and as much as 2600 at different dealerships