Come Along with Eric O. as he has a look at this 2005 Chevrolet 1500 5.3 that has a symptom of low cylinder contribution. Not a dead miss but a "slight miss". Gathered some surprising evidence when we scoped the fuel injector to get a waveform.
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Wanna see Ivan's Video: https://www.youtube.com/watch?v=j1c39taPXL4
Be sure and check out the all new "Outdoor w/ Eric O. Channel" too! https://www.youtube.com/channel/UC8PwOuadwwI-G2oLRXn3sMA
Interested in stuff seen in the videos or the tools and toys Eric O. likes and uses? Check out the **ALL NEW** SMA A-Store and help support the channel! : http://astore.amazon.com/httpswwwy0837-20
If an SMA Video has helped you out please consider giving using the "support" link on our YouTube home page. The videos take real time to create and pull us away from real work that pays our bills.
THANKS!
--Eric O.
WANT AN "SMA" STICKER OF YOUR OWN!?!
Simply send and E-mail to SMAstickers @outlook.com including: your shipping address and e-mail address in the text, I in turn will send you a paypal invoice for $5 each USA or $6 each international. Let me know how many you want and as soon as the paypal invoice is paid I will ship them out ASAP! Thanks for your support of our channel!!
--Eric & Vanessa O.
Feel like sending some swag to SMA because you love the videos but don't know where to send it?
Just ship it here:
South Main Auto Repair
47 S. Main St
PO Box 471
Avoca, NY 14809
Disclaimer:
Due to factors beyond the control of South Main Auto Repair, it cannot guarantee against unauthorized modifications of this information, or improper use of this information. South Main Auto Repair assumes no liability for property damage or injury incurred as a result of any of the information contained in this video. South Main Auto Repair recommends safe practices when working with power tools, automotive lifts, lifting tools, jack stands, electrical equipment, blunt instruments, chemicals, lubricants, or any other tools or equipment seen or implied in this video. Due to factors beyond the control of South Main Auto Repair, no information contained in this video shall create any express or implied warranty or guarantee of any particular result. Any injury, damage or loss that may result from improper use of these tools, equipment, or the information contained in this video is the sole responsibility of the user and not South Main Auto Repair.
O.M.G a labelled fuss cover with numbers and words and everything !!!!
I've got misfires on cylinders 1 3 5 7 I pulled valve cover no collapsed lifter coils sparks and wires appear to be fine….. 2007 suburban 5.3
I just wonder about your comment about my issue regarding a particular misfire for cylinder 2 for the 2017 Kia Optima Hybrid ( the bad thing is the injector plugs are not accessible without removing the intake manifold. Followings are what I did so far: 1. Cylinder Compression tests are done and all-around 180 for Kıa Optima Hybrid. 2- Cylinder Leakage tests are done with no head gasket issue. All leakages in %2 to % 4 for all cylinders. 3 – All spark plugs end Coils were replaced with OEM ones. 4. I tested ınjector 2 because there was a P0202 error and I also tested it outside of the car. I installed a new injector too. P0202 is removed, But still, I have a misfire error. The cables look good from the outside there is no damage but I am guessing maybe a broken injector ruined the ECU injector transistor. The worst thing is the problem does not occur permanently, it comes randomly. I use Autel IM508 to test while driving as well. Missfire counts randomly and I feel the rough driving. I also have Cat P0430 error according to the error. When I see this error I also thought maybe the injector working fine but ignition coil firing has the issue. I eliminate many things, now I am thinking 3 reasons: Injector cable harness, Ignition cable harness (it is not separate and I have to replace all engine harnesses), Faulty ECU.
I just fix cars for family and I always enjoy learning as much as I can about testing electrical components. Also like to here your thought process as you take us through the diag.
Great job troubleshooting sir
👍❤️👍
Diagnosed 1 on a quest by isolating cylinder by disconnecting coils, determined it wasn't spark so I unplugged injector, no drop in rpm. New injector fixed problem, luckily it was a front one.
I Have That Exact Problem P0306 P0200 … Injector It Is
Give me more diagnostic video Mr owe. Bring it on boy. Great as ever
I have encountered a bad injector on a 01 Silverado. My problem was extended crank time. The classic loss of fuel pressure a short time after key off. In my diagnostic process i pulled the fuel rail with injectors and had the wife turn the key on. I watched the injector spray. I went ahead and replaced the fuel filter out of caution and popped in a known good injector out of my old truck I still had.
I also was not expecting a bad injector, but wanted to eliminate other possibilities before replacing the pump which the previous owner had already replaced for other reasons. He sold the truck because he thought the pump was bad and didn't want to replace it again.
Newer 5.3 like probably 2014 up that body style I’ve done multiple sets those years I’m not sure I’ve ever seen one fail
Had almost identical misfire on a 3.0 chev gdi motor, for some reason it was sticking open erratically. Just lucky to find it .
I am using a IR gun on the manifoil,straigt out of the head.
easy to find the problem cylinder.
Rich is cold,lean is hot.
Talk much
U n Ivan should get a room😂😂
The
Great video as always. In the last 11 years of having my own shop, also in truck country with lots of chevys. I can only recall encountering 2 different trucks with a bad injector. 1 was a Tahoe and the other was a 1500. Both were 5.3 Z engines. It was back before I got handy with my scope. I used injector balance test and resistance to diagnose them. If I’d started watching you and scannerdanner sooner, I would’ve been able to diagnose them faster. Thanks to your videos, my scope stays pretty busy these days. Thank you.👍
Keep up the in depth current and voltage waveform diagnostics! The amount of information you can gather, both precise and relative is fantastic.
Interesting that you comment about people replace injectors without proving it, seems to be the norm more often than not. I had the same model come to me after injectors had previously been replaced but the rear injectors on both sides "failed" again. Turns out there was sediment in the rails and yup, they slope down toward the back….apparently the owner thought the fuel filter was life time because they were steel not plastic lol.
Yooo Eric O, I'm looking at an 07 5.3 with a P0300. I'm just a newbie in school but I got my hands on a Solus Edge this weekend only! Fixed an exhaust manifold leak and pcv hose leak which helped quiet her down a bit. Still random misfire. Plugs and wires are newer and test good. Clean maf/throttle body. Solid fuel pressure. Intake doesn't seem to have a leak. Any advice for this Solus Edge?? Thank you so much
I have a 2013 1500 Chevy I have a cylinder 7 misfire. I found and replaced the spark plug due to it being broke however after replacing the plug and eliminating back coil by switching #1 &7 coil and still getting the #7 misfire Eric do you have any ideas
I know you probably wont see this since its 3 years old but I actually had it happen the other day I works for a bus / car fleet we have e450s with 5.4 and chevy caprices with the 6.0 and the 3.6 so the 6.0 had a cylinder 2 misfire co worker of mine did tune up still had the mis changed the coil I came back from working in one of our other shops a week later re confirmed the mis on cy 2 checked out the data found my fuel trims were high went to ignition coil just to double check its firing correctly with my scope then went to the after the injector with the scope it wasn't till I found the shorted coil that the injector wasn't opening causing the high fuel trims I've been trying to break out the scope more this is my second diag performed with strictly scope but because of guys like you scanner danner and the wells videos I'm starting to pick up on things it's not the most perfect training source but it's getting me places thanks for the videos yall really help people who cant get to a real hands on scope class
Why do people complain if the content isn't what they want? It's baffling to me. Go elsewhere! There's tons of crap on YouTube, for cryin' out loud, like 1000 videos on every topic! Eric, your channel is my fave, bar none. I hope you'll ignore the complainers. I just don't get it.
I'd be with Michael Berg….yes I like seeing you fix stuff, but I prefer the scope, DMM, scan tool diag videos as well. Previous employer had a 4channel Pico, I'd be pulling it out to use anytime I could come up with any excuse to.
Enjoy the diag videos thank you
I am in awe of your physics and electronics knowledge. Most mechanics wouldn't know Ohms law if it smacked them up side the head.
As always Moro v good
Of all the videos you do, I think I enjoy the Diagnostics videos the very most. Keep it up Eric.
Great job showing the Hows and Whys of misfires and fuel trims. It’s amazing how many “mechanics” don’t know the concept behind long and short term fuel trims, or how many don’t understand how a GM EVAP system works…. unbelievable.
Thanks for all the quality content.
My 99 5.3 did the exact same symptom and it was an injector
The only guys who are going to complain about diagnostics are the parts cannon guys. They just want to know how to cram more parts in the cannon.
Disconnect the suspect injector see if fuel trim changes and monitor o2 sensor and misfires
Another good one Professor O!,,
Definitely would of advised the plugs and wires, as well as fluid change in the diffs, transfer case and transmission, based on that mileage. Although rare, I would of at least discussed replacing all injectors, if only because they fail so rarely, but whatever this injector was exposed to, so were the others, as well as probably being manufactured at the same time and maybe there was something going on in the manufacturing at the time.
Diagnosis are my most favorite videos. I like the way you describe what should be happening and what is wrong on the wave forms. Can tell you’ve been at it long enough to know what you are looking for. Your setting a good standard for others to follow. For sure my most favorite videos are the diagnostic videos
seen those fuel lines rust internally anf send rust into injector screens causing misfire from lack of flow. Fixed by r and r lines and clean fuel rail and injectors
People will whine about anything. If the video helps just one person facing this problem, the video is worth the effort
Great video thank you. I don't get many misfires in the shop but I'll sure be ready for when they do roll in.
FYI, I'm in Australia, and have the '17 Holden Caprice, which has the LS3. 97,000km on the clock, and THREE injectors have failed so far, and I think a 4th is on the way out too. (misfire codes on #6). Usually, I get both a misfire code, AND an "injector circuit fault" code, however so far, #6 is only reporting misfire. Dealer said it's a reasonably common problem at the moment, on high usage vehicles such as mine (I'm a limo driver), and police vehicles etc. They also say the coils are going high impedance, not low, like yours.
Thanks for the video.
I havent seen many injector failures on these motors , actually GM in general I havent seen many
I'll admit to changing or swapping an injector on a misfiring cylinder without a thorough diagnosis. Working in a scrapyard, it was easy to grab an injector. As others have said, unless you work on these on a daily basis, the cost of the tools, and more importantly, access to wiring diagrams and data, like the correct resistance values is difficult to justify. Any other product you purchase comes with a wiring diagram. Washing machines, air conditioners, dishwashers, heaters etc all come with wiring diagrams. Motor vehicles should come with wiring diagrams specific to the vehicle or the manufacturer should have a website where the owner or a mechanic can get free access to them by entering the serial number. I can get that information about almost everything online but somehow, auto manufacturers have gotten away with charging for that. You must spend quite a bit monthly on the services we've seen you get information from.
not a bad impression of light misfire , i could do better cuz im so used to it.
Well I just had an '07 2500HD w/6.0L with the same issue, granted this truck was rough, but cyl 6 miss. 2 busted plugs and 6 of 8 wires broke on removal…. went ahead and played swaptronics with the coils from 6 and 2, still had the miss on 6… injector 6 was shorted @ 4.5ohm.
I don't have a scope yet so had to just use the DMM but the result of the diagnosis was the same. great video on how to diagnose properly!
Kind of wondering, do the diagnostic equipment manufacturers Autel & Veras give classes on how to use their tools, or did you just figure it out cause you're brilliant?
Excellent video. Great content
The best in the business! 😀
hell dont be sorry for diagnostic videos, finding and solving problems puts money into my pocket and food in my kids belly.
same everything as that but had all new injectors from another shop, came to me as the miss came back, #1 was bad again plus the plug was filed and injector was shorted out