Still having problems, truck will run with starting fluid, fuel pressure is about 10lbs. replaced fuel pump relay, with tbi injectors unpluged and key on the (A) side reads 12 volts, and the (B) side

Asked by Jan 11, 2017 at 01:05 PM about the 1988 Chevrolet C/K 2500

Question type: Maintenance & Repair

reads about 9 volts. Could it be a ecu box? Or fuel pump? Or something else?

2 Answers


It is something else, fuel pressure should be 9 to 13 lbs. This is on the low side. Injector voltage plugged in is like 5 volts on up. Can you see if there is a pulse? It may be dirty or failed injectors.

1 people found this helpful.

It sounds as if the injectors may be clogged...

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