From a retired gm tech: Nice diag., I no longer have access to your array of diagnostic tools, but if I lived nearby i'd recommend and use your knowledge along with your shop. Well done!
Good video. Keep in mind that typically the STFT will be close to zero when adding revs if a vacuum leak is present. Long term trims won’t show immediate changes.
I've found that because you change "blocks" the LTFT does change immediately. I have seen this on most vacuum leaks that I have encountered. But that is something to keep in mind as not all vehicles function the same way.
Very good job there Sir I also am a retired GM mechanic and those purges did cause lots of trouble and also the intake on the that engine would leak it too and also they that evap canister vent valves with stick we had a lot of gravel Rd. cars around here and that dust would get in there and also the the PCV valve in that that valve cover cause lots of problems too leakage whistling and oil usage and everything under the sun good job there Sir
From a retired gm tech:
Nice diag., I no longer have access to your array of diagnostic tools, but if I lived nearby i'd recommend and use your knowledge along with your shop. Well done!
Your channel just popped up on my TH-cam stream. And i must say, I really appreciate your diagnostic approach and skills. Keep up the good work
Glad you found it useful!
Good video. Keep in mind that typically the STFT will be close to zero when adding revs if a vacuum leak is present. Long term trims won’t show immediate changes.
I've found that because you change "blocks" the LTFT does change immediately. I have seen this on most vacuum leaks that I have encountered. But that is something to keep in mind as not all vehicles function the same way.
Great content! Keep it coming!
Thank you.
Very good job there Sir I also am a retired GM mechanic and those purges did cause lots of trouble and also the intake on the that engine would leak it too and also they that evap canister vent valves with stick we had a lot of gravel Rd. cars around here and that dust would get in there and also the the PCV valve in that that valve cover cause lots of problems too leakage whistling and oil usage and everything under the sun good job there Sir
That’s why I always recommend a smoke test on these.
Another good video and informative 😊stay SAFE
Another great diagnosis and video. Thanks.
Thanks for watching, I appreciate it!
.I learned a lot today. thank you
You're welcome, glad you found it useful!
Can you zoom in on the computer screen when you are talking about the reading? Can't see the screen when the camera is far away
I realized that when I was editing the video. I am starting to do screen recordings so this won't happen from this point on.
Smoke test the purge valve, that's the 1st thing that should have been done.