I think this problem might have sumthing to do with my carb setting ( i have an edlebrock performer intake with an edlebrock 4brl 750cfm??) i think its a 750 anyways the guy i bought my car from was a total airhead and had little if any respect for the car)i have a feeling its putting to much fuel in and isn't cutting the fuel off immediatly once the ignition is shut, off but jus thought i'd see what everyone on here thinks because they saved me alot of time and money last time i needed help........this has just happened lately, here's the problem.....when i turn off the ignition on the car after any type of driving it, it seems to sputters a few times before the engine completly dies, i'm kind of worried about this but i'm not completely sure why its happening so if anyone can give me there opinion on this would help alot, if you need any other info let me know and i'll see what i can do, thnks

 

Your problem is probably in the timing. I seems like your timing is to high or you run cheap gas. Try turning the timing down a couple of degrees and see what happens.

 

I'd guess too much timing and/or idle speed screw too far open.

 

Idle is probably to high

 

Idle speed to high
Too much timing
Bad fuel or not enough octane
Too hot of a spark plug