Quote:

Just recently started the car and tried turning the A/F screws and it DID affect the idle of the car. After turning in the screws just 1/4 turn each (all 4 of them), the rpms went waaay down and the engine would stall.



OK, that's good.

Your entire problem might just be the idle mixture set up too rich. If you can turn any of those 4 screws in (clockwise) and not negatively affect the idle quality of your engine, you've probably helped the situation.

Go around to all 4 screws (after the engine is fully warmed up, and if you don't have intake manifold heat we could be talking 20-30 minutes) and try turning each idle mixture screw in, maybe 1/8 revolution or less at a time, then stop and give the engine time to respond. Blip the throttle now and then. As soon as the engine begins to stumble, you went a little too far with that particular screw. Back it out to the last spot where the engine idled OK, then move on to the next screw.

What I'm trying to get you to do is set the idle mixture at the leanest possible setting where you still have acceptable idle. If you do the above and still have that rich carb stench, it's a sign we need to look elsewhere for the problem.

Still check the timing when the light comes in and let us know what's going on. In the meantime, doing the above won't hurt a thing.

Jim

ETA: You know, no one has mentioned the float levels. Duh! Have you checked them?

Last edited by JimG; 10/29/08 08:19 PM.