I have a 1989 chevy 350 tbi that will not start when hot. I have
changed the cap, rotor, throttle body, ignition module, egr valve,
plugs, wires, checked fule pump, and filter. I have checked the
pickup coil, it is 834 ohms. I can dump gas down the intake and it
still will not start. I have spark, but it seems like it is advanced
or retarded. Does anybody know where to go next? What controls the
spark timing? It does not have a vacuum advance. The truck starts
when cold, runs fine, then when I shut if off, it will not start. It
has to sit for 5 to 8 hours before it will start again.
If anybody can help me I would greatly appreciate it.