I had the motor rebuilt recently, seems like I've been having a lot of issues with it since. had a compcam put in, thats about all. The cars been running great after replacing the idle air control valve, distributor, wires, EGR valve, and a few injectors. After 20 minutes of driving, I park it and turn it off, and it won't start. It will crank, but won't turn over. About an hour later, it'll start to sputter, then die. 2 hours, it'll hardly run (400-500RPM)...if I let it sit overnight, starts and runs fine in the morning. It happened today, I still get spark, so I'm assuming its fuel related. It's got the TPI. Any ideas?