My name is Stacy. I have a 1990 Chevy G30 van 350 engine, Cranks and runs for well for couple miles and then loads up (Black smoke / tail pipe) and stops running, Let set for 15 minutes and runs fine

Asked by Jan 25, 2017 at 06:19 PM about the 1990 Chevrolet Chevy Van G30 RWD

Question type: Maintenance & Repair

2 Answers

120,195

That sounds like it is running way too rich. Maybe it has leaking fuel injectors.

87,165

Yes, possible leaking fuel injectors. You can take the air cleaner off and with the vehicle running, watch the fuel come out of the 2 injectors on the throttle body. The gas coming out should be a nice cone shape spray, no drips at all.

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