No Misfire COUNTERS? Nissan Misfire Under Load (Indy Day 4)
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- Опубликовано: 8 сен 2024
- This hot rod 2002 Nissan Altima V6 5-speed has an annoying misfire only under HEAVY LOAD.
Scan data unfortunately does not have MISFIRE COUNTERS available, so we have to think outside the box on how to pinpoint the offending cylinder.
Turns out to be a really cool case study!
Enjoy!
Ivan
As per Ivan's recommendation, I bought 3 NISSAN OEM Coil's, bolted them in. I am happy to say, THE BEAST IS BACK! Thanks Again Ivan. PINE HOLLOW AUTO DIAGNOSTICS ROCKS.
I have one at 170k mikes how you get 270k miles that’s lovely what’s the key to get that many miles
@@GeneG-wk2mz Good maintenance. Change oil, spark plugs, filters and such regularly. Don't rev them too high when they are cold etc.
@@GeneG-wk2mz oil changes! And the more miles I drive, the more often I change it. Typically between 2000 to 2200 mi, it's changed! It goes along with my other three Nissan maximas 3.5 that I have 😃
Granted, I'm a cheap DIY'er, so this solution might not be for all.
I would have bought a new coil, held it in reserve, and slathered that hole with silicone calk, encircling the area with a ring of heat shrink tubing once cured.
Most likely, the no-parts-required repair would have lasted the remainder of the vehicle's life.
@@GeneG-wk2mz I have a customer with a 1988 Pontiac 6000 2.8L with 457K miles. The valve covers and oil pan have never been removed. His wife picked it out new and he has changed the oil when it just starts to get a bit dark in color no matter the miles he says it's roughly between 1600-2400 miles.
LOVE IT !!!! Customers can not get over the fact that I want them to drive on MY initial test drive. Get them to make it do IT and tell me when they feel IT {misfire or vibration} and/or when they hear IT {noise or clunk}. Once I know what their complaint really is, we swap places if I need to try some tricks to pinpoint the problem. Like left and right turns for bearing/CV noise or lug the engine in high gear on a grade for a miss. This keeps you from fixing something else you find that NEEDS fixing, but you don't fix the original customer complaint. I do tell the customer of any thing else I find needing repair after the original problem is solved.
Congrats Ivan 100K Subscribers 😃
That's similar to how a cardiologist reads an EKG. Way to go Dr Ivan!!
Old fashioned way and pulls out the Pico scope. You are a funny guy. :-)
That was really good . Eric O would say that's your problem lady .
It's amazing how much detail that scope can reveal. 👍💗
Let's not forget the training it takes to understand what in the dickens you're looking at on that scope. Well done Ivan.
Pico is an amazing tool.
The power of visual inspection... I'm having a similar issue with 04 silverado 2500HD.... Congrats on 100,000 subscribers... Safe trip home....
The power of the scope and knowing what to look for. Good one Ivan!
He's gonna need a couple o2's at some point. An o2 that goes flat on acceleration will sometimes cut the fuel injectors off. Wasn't the cause in this situation but something to be aware of.
I was a teenager at dad's car lot/garage/junk yard back in early 70's. If we got a car traded in with over 100K miles we checked the transmission very closely and ran a compression test on engine. Very good chance one or the other was about used up. Now we have vehicles on the road less than 15 years old with 300K miles and it's not even a slight concern. Just amazing technology. Brand is fairly irrelevant as much as some would like it to be. Now I know the last 10 years with DOD engines have started to see a return to early engine issues. Finding any 2010 up, especially 4 cylinder vehicle, that doesn't have oil usage issues can be tough. The cylinder cancel technology (displacement on demand) isn't a good idea. It just creates too many issues. But the next 15 years WILL see a HUGE shift toward electric vehicles. Going to be another big shift in workers learning a new trade because a LOT of "technicians" aren't technicians, they are mechanics. Parts changers. PepBoys depends on them. Whole business model in based on selling parts/repairs. Not fixing cars. Selling parts/repairs. MORE! MORE! MORE! Ethics aren't particularly wanted. SELL THAT JOB! I mean the hiring process is all about ethics. But when on the job...not so much. BTDT. SELL! SELL! SELL! GET THAT MONEY! Reminds me of strip clubs.
So many techs are afraid to use the scope because it looks intimidating but these videos show how easy and useful it can be , you will never master the device while its gathering dust on the shelf....
You keep claiming the power of the scope. The power lies in the knowledge of how to use it. Well done! Again.
and the power to understand WHAT YOUR SEEING ON THAT SCOPE.i know.i didn't see a thing till you started explainig..haha ha
Wow, outstanding diagnostics here. With the variance of waveforms coming through paddle sensors, it is so cool you were able to notice the change.
P.H.A.D. PORTABLE HELPING ALL DRIVERS 😎👍
I've seen coils having the burn marks, very clearly indicating they are having an issue, but it was very cool to actually see that spark jump. Thanks, Ivan.
Ivan great job on primary secondary diag.back to basic..great teach
Congrats Ivan on your FIRST 100K subs. Well deserved.
We had one of these(similar ‘97 Maxima) .. what a sleeper.😊
Definitely coolest video!! Nice find!! Nissan v6 are pain!
Nice find Ivan way to go!!! Hope you had a safe trip.
Great job on diagnostic there and that visualization was wonderful. All the best from Canada
Nice job Ivan. Congrats on 100,000 subs.
Thank you for your support Wyatt!
You're the man IVAN! Cool diag.
Wow, Ivan! That was great diagnosis! Go scope power!! You narrowed it down so easily! Well done!!! And on way to 200k subs!! You da man, ivan! Great job 👏👍👌
Thanks for the enthusiasm, Josh!! :)))
Nice job as always congratulations on 100K
Don't know why you only have 100k, your a great tech
May have generic mode 6 data misfire records have had success with some Asian vehicles looking for misfires with no misfire pids
Ivan is a beast with these diagnostics. I love how he goes anywhere and gets under the hood of anything with and without a steering wheel lol. Great job and congratulations on 100k subscribers! Been here from day 1. Thanks for taking us along!
Beautiful diagnosis. Very satisfying.
I was impressed with compairing o2 sensors signals to determine which bank had an issue.
In this case it was very helpful. Good thing the problem was on the front bank haha :)
AWESOME AWESOME AWESOME!!! I was just finally able to get a 4 channel Pico myself! Been a LONG time wanting and waiting for the right $ opportunity......
Congratulations Ivan 100 k excellent knowledge and work ethic.✅
Creativity and brilliance as usual, I will be with you hand in hand towards the summit of glory and fame🌺
Great diagnosis again Ivan. Good job as always.
Excellent pinpoint diagnosis...Most shops would have done a complete wires/plugs/coils parts cannon.
Meh. Deleted my rant. Have a great day.
You are wise beyond your years. Congrats on your well-deserved 100K mark.
Top of the diagnostic food chain Ivan!!
It may be time to replace all coil on plug on this Nissan to prevent further problems with the other coils, Excellent case study.
That was cool Ivan. It's nice when you can see physical evidence.
yeah that was very COOL case study Ivan..man bit of a needle in hay stack for DIY like me.
That was cool, great job Ivan.
Yes! 100 thou subs. Enjoy your silver plaque, well deserved.
Next year one million subs.
Awesome diagnoses Ivan 😃👍.
I wish i had the patience this man has!
great job as always.
THAT WAS FANTASTIC DIAGNOIS!!!!
Awesome diag on your final day. Cool that it was front bank too. Thanks Ivan!
Using the “scope”.......totally “2001 Old Fashion” style right there......next thing you know Ivan will have to hand crank to start an engine......All jokes aside, another great diagnosis procedure done the way it should be done. Man I love learning here. I’m guessing bank 1 had a preheat issue in the sensor or didn’t have a functional preheat option etc. perhaps? Crazy how intermittent issues can present then disappear. Great job yet again.
Interesting vid as usual Ivan, like the way u got direction with the O2 sensor data. Knew it was going to be an ignition problem but it’s always kool to prove it out. In the case of the cat, maybe previous issues could have caused the reduced performance. This is where vehicle repair history comes in handy. Great job dude 👍🏾
Good thing it’s on the front bank. I used to do the same thing with a grounded screw driver running it along plug wires to find a bad wire.
An electrifying 100K subscribers! Bravo!
Awesome detective work as always, Ivan! Thanks! Safe travels!
I could really follow along, how cool is that Ivan. You are a great teacher!!!
That's great to hear Roxanne! Means I'm doing something right 😁
One day we will become Bernie. We need more waveforms to say what could be bad before we take things apart. It is hard when it comes to turbulence on the secondary waveforms but good thing that it can at least be compared to other known good under load.
that was just to cool to see !!!! nice job!!!!!
Ivan,
Great video, analysis, diag, and fix!
I wish I had a secondary probe.
Paul (in MA)
Buy one! AES WAVE. Com
Great video! Keep making content! Very interesting!
Great vid Ivan. Very cool analysis and diagnosis. Thanks for sharing.
Nice work Ivan!
Hey Ivan, nice job on that diagnosis. Isn’t it amazing what you can see in an ignition pattern on an oscilloscope? You can see the coil ramping up and then when the plug fires you can see how healthy the spark is looking at the the spark line. You can basically see how healthy the coils are and if the spark plugs are firing properly in the cylinders.. On older cars point systems you could tell how healthy the points, condensor, coil and spark plugs are. A very good way to check the health of the ignition system. Usually a bad spark plug wire will have a lot of resistance causing a high peak in the pattern before firing. Can confirm a bad wire by checking the resistance on an ohmmeter. Pretty cool stuff. The same goes with the injectors. A lot can be seen in a spark pattern. Pretty cool stuff.
Yup, reading secondary patterns is becoming a lost art. Look up Mac Vandenbrink, the guru of ignition scope patterns ruclips.net/video/TgFJVL_WsMA/видео.html
@@PineHollowAutoDiagnostics will do Ivan thanks for the info
Nice case study
Great video again Ivan!
Misfire is under load because when under wide open throttle - more air is present in cylinder which means more compression in the cylinder. Second : when lugging, the low RPM adjust the spark timing closer to TDC, this means the spark must jump the gap, when the compression is maximum. And spark is difficult under compression. So it finds easier way through the hole in coil boot. If one just rise the RPM in idle the trick don't work because throttle is partially open(less air) and the high rpm means the spark is early(advanced spark timing) in compression stroke when there is not much compression.
Excellent explanation, spot on!
OEM coils are essential for nissan if you don't want your ses light to come on. However, with a high milage vehicle i would attempt to pull them from a junkyard car @ $10 a piece. Worked for me.
I shortcut testing on those issues by using seat of the pants method. same way, lugging the engine in a high gear and full throttle, feel a miss? direct to visual inspection of coils, boots and plugs.
although it's nice being able to see which cylinder and makes a better video testing. yes, you should still always check it out after repair, because all too often there's hidden gremlins and alligators waiting to bite. lol
SNAP ACCELERATE test always good for uncovering sneaky KV leaks 👍
it always seems to be the front bank on all transverse engine vehicles, unless they've been severely overheated.
I guess it's because of more heat soaking from the radiator, a/c and converter up there causing higher temperatures, or maybe the rear gets better airflow from turbulence.
pretty much every v6 or v8 i've touched has cooked the front ignition parts way worse than the rear, except the ones which were overheated to death, turning the plug boots to chalky ash and more.
Great diag. I saw something like that on another vid. I think it was SMA.
Older OBD2s don't have live misfire data pids, but you might've been able to see something in mode 6, if you had that info handy. Treat it like you were going after a useless PO300 code. :)
Great tip! Should have looked there :)
@@PineHollowAutoDiagnostics Older OBD2s can be a chore to diagnose especially with limited data pids and slower ECM refresh rates and people often ignore mode 6 because it's not really user friendly. You have to know what you're looking at, and that takes time and digging. What does this goofy pid mean? It took me yrs of training to decipher what all those symbols mean, and how are they relevant. If you have a good case study in the future, you should do a vid using mode 6 as a diagnostic tool.
Excellent diag. Thank you
Low Fuel pressure?
Edit: posted before watching like a good couch mechanic.
My first thought was a broken sparkplug. Seen that a couple of times. Wasn't too far out.
@@dans_Learning_Curve Yep. Customer stating plugs were changed makes me almost instantly pull the ones I can access to see if they were tightened and/or broken on install. I'm an old crab ass skeptical grump. LOL!
Great job as always. There's your problem lady.😆😆
Nice work awesome video...
ANOTHER GREAT VIDEO
Thx to you I fix my problem ❤
Wrap it with electrical tape, and it's good to go for another 200k miles. 😬
The thought crossed my mind xD
@@PineHollowAutoDiagnostics I thought that might be your Bonus footage temporary fix.
The good old Eric O. Method
@@PineHollowAutoDiagnostics this funny lol I would have wrapped it just for proof concept,but for customer you definitely change them and if it was mine ..not going to lye I would probably leave it maybe lol
@@PineHollowAutoDiagnostics Maybe high voltage silicon sealant would work.
A Nissan with 277k miles .....be thankful it still works
On some of those older
Nissan products they two plugs and what info was OBD plugs was just generic but the smaller Nissan plug had lots more info
Great job
Fantastic Job Ivan!!!
Usually Nissan is pretty good with throwing a cylinder specific trouble code. But there is always an exception.
thanks ivan
nice work
Great JOB AS ALWEAYS
Come on Nissan, a 2002 with no misfire counters? Step into the 90's why don't you, lol🤣. I don't know what Nissan recommends, but with Fords if you do a tune up on a cop ignition system it's a good idea to change the boots too. I see this engine has 277k on it so probably best to go with new coils too at that mileage.
A new coil and igniter might be pricey. My brother in law needs one for his Tacoma...OEM part is $170 CAD
How much is a car payment? Repair is cheap in comparison.
👌👌👌
Sure beats grabbing hold of the spark plug leads and (zap!) testing them that way!
Magic !
Gotta love a scope.
How cool!
Thanks. For. The. Video. Sr. 👍👍👍
Awesome 👍
First thing I'd do is pull plugs to check the gap. But that's just going on instinct.
Like #244
Thanks for the video!
nicely done, a wealth of information as always. what secondary pickup do you use.
awesome diag
ha Bill that one was definitely conclusive :) Glad it was one of the easy coils too!
Awesome
nice. I was going to guess a spark plug with 200k miles on it LOL... sort of the same thing eh? LOL. I bet it started out as spark plugs with 200k on them though LOL especially if the back are obstructed lol
You make it look so easy... but we know it's not.