Mechanics

ENGINE RUNS ROUGH ONLY WILL STAY RUNNING IF YOU FLUTTER THE THROTTLE BUT RUNS FINE IF YOU SPRAY STARTING FLUID IN THE THROTTLE BODY

1990 Chevrolet S-10 • 180,000 miles

I have replaced both the injectors, and replaced the dist. Cap and rotor, use a noid light to see if injector pulse is present and there is a pulse and it has good fuel pressure have also replaced the fuel pump relay
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Aaronmesker
September 10, 2012.




What is the actual fuel pressure?

Do you have any vacuum leaks? Especially around the throttle body.

Roy
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ASEMaster6371
Sep 10, 2012.
I dont believe it has any vacuum leaks fuel pressure is about 12psi

Tiny
Aaronmesker
Sep 10, 2012.
Did I mention it also back fires shoots a good flame too

Tiny
Aaronmesker
Sep 10, 2012.
Verify that the wires are going to the correct plug. Otherwise it sounds like it is running too lean.

Roy

ASEMaster6371
Sep 10, 2012.
What would cause it to run too lean besides the ecu. It happened from sitting for like 2 months. At first I was able to start it with starting fluid and drive it without a problem then one night it just stalled when I pulled into my driveway sence then ive been having the problem im having thats why I changed the injectors

Tiny
Aaronmesker
Sep 10, 2012.
12 lbs of fuel pressure sounds low. It should be around 15 lbs.

Roy

ASEMaster6371
Sep 10, 2012.

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