Engine Performance problem
1968 Pontiac GTO V8 Two Wheel Drive Automatic
Hello, Ive worked on this car for many years but I am not very good at carburetor problems and I think this is what I have.
This vehicle has a 455 with a 750 Holly double pumper. The car runs great in cooler temperatures but whenever it gets warm outside I have problems. The car starts to stutter at low RPM's. After I get past 3000 or so RPM's and then come to a stop the car just stalls. It starts back up if I have the pedal on the floor and I rev it, but it starts stuttering again. Especially on hot days I can't drive the car because it just starts missing and backfiring etc.
Please any help you can give would be appreciated.
Like I said when its cool out the car runs like a champ.
PS I still have the original engine in my garage, lol!
have the same problem?
Saturday, May 2nd, 2009 AT 1:58 AM