Reply to "Engine is dieseling badly on shutdown - Seeking advice"

The Y axis KPa. I think it is vacuum in reverse sequence (or something like that). 101 is butterflies closed and 20 is WOT (wide open throttle). At startup timing is reduced to 10 degrees making for easy starts. This distributor is somewhat like having 1/2 of EFI. It has a MAP sensor. It is now my default distributor and I really like it.

I was baffled by the dieseling and have not seen anything like it before. My hunch is cam profile is involved. I increased the advance for low RPMs from 23 to 25 (and adjusted idle mixture on the lean side) and the dieseling stopped entirely. Next week I will get Tommy Hodges and Wilkinson involved and maybe get some insight. This is Wilkinson's car.

1/9/246:26 PM

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