Ok, I posted a thread about this last week named "Cam Sensor", but didn't really find anything out. After a recent rebuild, my car will start up, but after about 5 seconds it shuts off. I never had the car running before the rebuild, so I started checking everything I could think of. I set my cam sensor because the timing was off. I thought this would solve my problem, but no. I've checked all grounds. I even unbolted the exhaust, since I thought it might be plugged. I can't find any vacuum leaks. I obviously have fuel at the rail, but I haven't checked to see what kind of pressure I have. I've also looked at the MAF (filaments?) and they weren't dirty. I don't know where to turn from here...please help!!