Great video Jef as usual.....
A couple things to add to video or post I believe.......
Maybe even to be helpful for the enthusiasts....... that don't understand the basics.
One.....
Incorrect exhaust ( ) or an exhaust leak/incorrect placement of OXS sensor/diluted readings( No fouler ) can cause faulty trim values.
Two.....
In addition to OXS,MAF,FP, plugs, Injectors........
Sensors of reference at end of video should include the intake air, Fuel PSI sensor for rail/HPP, The MAP sensor since some cars have no MAF.
Incorrect coils or improper dwell from faulty grounds.....( China issue )
Three.....
When referencing Banks in .....like as the one you ref in video.
I think it would be a good idea to state which side is the right and left side of car...... because this is always a thing I see people don't know........they screw it up big time!
BANK 1 = RIGHT PASSENGER SIDE
BANK 2 = LEFT DRIVERS SIDE
Second integer means its the front or back of CAT.
Example : So if bank 2 sensor 2 .........this would mean = left side rear OXS sensor.
Four.....
I think non flammable fluids for intake fault finding spray......... are also to be considered for inverse display in .
Especially for warm-up transition........ to help find multiplicative faults for trim. ( The ones that hide under crap plastic intakes or from broken down/folded gaskets )
Diesels require it so run away isn't induced......! Don't forget we have trim in TDI's to contend with..... so better to retrain, verse a dumb mistake happening.
See...... when you spray no flammable gas carbon in........ it will miss and store typically for the port which is the leak!
This lets tell you what ZYL........ verse just a higher idle and rich trim to observe.....
They are also not as dangerous to combust and cause a fire potentially in bay or noxious.
Five.....
Remember....... when Jef is pulling the dipstick and inducing the air leak getting a lean code.
The actual function of the is to dump fuel to compensate.
This is what causes the serious issue for carbon build up, and oil dilution with gasoline....ultimately!...... getting you the misfire and rings wiped out along with CAT destroyed.
Overall I think this is a great thread and again great job on the video..........
I am just bias on the seesaw........ because when I was young someone jumped off and let me fall.......The hell with that dam seesaw.....