End of Injection Timing Open Discussion

[vilefly]

Actually, the best use for FLIR is in finding electrical faults. Go after the hot spots.

Had to gather all these unique tools because of the pressed-on cam lobes in both gm and fords that used to slip during an overheat scenario, leaving me with an unknown cam duration and timing mystery with the difficulty of proving it to the customer. They both later fixed the cheap, hollow cam issue, but I had the burden of proof for warranty validation. Ford misfire data was unavailable, also. The pressure sensor helped me find the faulty cylinder cam lobe. A cylinder pressure waveform vs MAP sensor readings would tell one what the cam and valves are doing.

Here is a link that teaches cylinder pressure waveform interpretation. It is very good.
http://autoditex.com/page/cylinder-p...nsor-64-1.html

There is a PDF download button on that page. The pressure transducer is far more useful than the FLIR. Get it first, I say.

Here is a waveform breakdown pictures with various scenarios. broken valvetrain items, vvt engagement, etc.
https://www.automotivetestsolutions....ts-page-1.html

if you are programming for a camshaft combo, this should help with the plotting and planning of injector on/off times, I hope.