Anyone know about TBI Systems on '90 GMC pickup?

Question

After ran and shut off for 5-10 minutes will run rough or dies after starting back up. Runs smoother after running for a few minutes.

Answer 1

Sounds like a leaky or stuck injector. also could be leaky fuel pressure regulator. have a great one!!!Jake.

Answer 2

likely the pressure regulator is open, this can be overcome by pinching the return line multiple times with engine running. otherwise check fuel pump

Answer 3

Check vacuum tube from Map sensor for cracks and repair if needed.Check distributor cap for excessive wear and replace if needed.