I'll put a t off my vacuum gauge later today and try it for myself.
Earlier today though I decided to up the jets. It was really hot out and I was getting some spark knock during acceleration. Also it was dieseling when shutting off. I decided to shut it off while cuising and look at the plugs. When I pulled the new plugs I put in 3 days ago, they were pale white still, the old ones I had in also had sides that were wiped clean. I moved from 72 jets (factory) to 74s and most symptoms went away except for the preigniton tiping in from cruise.
It seems like 74 is slighly rich, and 72 is too lean. I might eventually buy some 73s and see how they work. I'm going to play with this vac advance can one more time and see if I can get it straightened out. Otherwise I'm buying an adjustable one.
Last edited by kyle86; 07-14-2010 at 05:46 PM.