Advanced Fuel Trim Diagnostics

Advanced Fuel Trim Diagnostics

[davidsinclair]

I am just always so blown away by Bernie’s methodical and yet lighting fast diagnostics, watching Bernie makes me feel inadequate.
Thanks Bernie for yet another great educational video..

[scaracci]

So passionate about this stuff, the man makes himself cough. Like a peacher about fuel trims. Love it!

[SamuriaPizzaCat]

This man cant stop producing straight FIRE !

[PineHollowAutoDiagnostics]

Love the passion, Bernie! Fantastic seminar! Question on VE: the theoretical mass air flow (g/sec) = [inlet air density (g/L) x Displacement (L) x RPM (1/min)/2/60 (sec/min)]. For a 3.4L engine at 800rpm idle I get 9.7g/sec. Why is this not closer to the rule of thumb 3.4g/sec? Inlet air density I assume is 1.28g/L x 1/3 since the intake manifold pressure at idle is roughly 1/3 of atmosphere...

[theblacksheep]

One of the best in the game as a young tech definitely following closely

[BigDogDiagnostics]

Every video I’ve seen from you is methodical and fundamentally gold! Thanks for spreading your knowledge, people like you make the whole industry better!

[bme]

Great explanation. I just replaced a MAF on my Toyota, getting code for lean on both banks. I only figured it was the MAF after running a 3 drive cycle procedure based on a Service Bulletin and seeing that the final MAF reading (with ignition on but engine off) was over the spec limit. New MAF did the trick.

[CartersDiagnostics]

Around the 51 min. mark he speaks of the MAF voltage being low on this KIA. The "rule of thumb" measurement of 2.7v to 2.8v that he uses I 100% agree with, Just to point out this is a good number for a 6 CYLINDER engine... A 4 CYLINDER engine "rule of thumb" in my experience is 2.2V to 2.4V on the MAF testing. Great video as always.

[michaelr]

I LOVE THESE PRESENTATIONS. More please!!!

[malibuStroker]

Great video but would love to hear the question and answers as well. Thank you for what you do!

[orville]

Thank you Bernie you have helped me more than you will ever know .

[swordofthelord]

Great video, great knowledge and great passion!

[theautomotivedoctormr.wils]

Thanks for sharing this class Bernie, very informative .

[mike-ypuk]

What a great understanding. I enjoyed this one a lot.

[IAMNOSLEEP]

I watched this during the live webinar. Watched again here. Thanks for the great info. Cheers...

[williamj]

Thank you for making this video. Great education!! Thanks again.

[arthurfricchione]

Bernie great explanation. Can’t wait to watch the rest of your videos even the ones you have to subscribe to. Thanks so much for sharing your knowledge. Artie

[royarena]

New subscriber. Thank you.for taking the time to make these videos and share your knowledge.

[RideBikes_Walkplaces]

If the injectors have a higher rail pressure will they inject more fuel per ms if the injector hole size stays the same? Or is it just the size of the hole/time open that dictates how much fuel is injected?

[romanjaspe]

Thanks so much. Interesting!. God bless you