Engine Performance problem
1995 Cadillac STS V8 Front Wheel Drive Automatic 124000 miles
So far I have replaced the starter which was in pieces and the battery which was dead. I got it to run, but it would backfire sometimes when I started it up and it was idling very rough. I replaced the intake manifold gasket and the o-ring for the intake manifold as well, thinking that an air leak could explain how rough it was running. Since I replaced them, the car will not start. Instead it backfires under the engine or in the engine, I can't tell. I'm thinking it's either a timing problem or an engine valve problem that's causing fuel to get into the intake manifold during startup and causing the backfiring. Am I correct? What do I need to do to get it to start?
have the same problem?
Monday, May 12th, 2008 AT 1:55 AM