so I have a 91 chevy ive replaced the following

Asked by Sep 12, 2016 at 03:16 PM about the 1991 Chevrolet S-10

Question type: Maintenance & Repair

so I have a 91 chevy ive replaced the following, injector, fuel pump, fuel pump relay cap rotor plugs and wires the truck is still not running it cranks and back fires what could it possibly be

1 Answer

5,885

If it was running before you replaced cap and rotor, check firing order, you might've crossed spark plug wires. If it wasn't running, check spark at spark plugs and fuel pressure, if those are ok, check the timing by doing a compression test

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