1988 Chevrolet Silverado won't start

MONK2003

MEMBER
1988 CHEVROLET SILVERADO
5.7L
V8
2WD
AUTOMATIC
130,208 MILES

It will turn over good but will not start and run. I can spray fuel in throttlebody and it will run till fuel burns out. I have changed the modular, distributor, and cap. I have also changed the computer. It is getting fuel to the throttlebody but nothing comes out of injectors. I have checked injectors and they are good. It is getting good spark. I have tried everything I can think of to do and even tried what others have told me but nothing has worked yet.I have been working on this problem for 3 weeks now. Can someone please help me?

Wednesday, May 28th, 2014 AT 7:13 PM

1 Reply

TY ANDERSON

MECHANIC
719 POSTS

If the engine is running on starting fluid then there is a fueling issue.
Have you checked fuel pressure? It should be 9-13psi
Disconnect all the fuel injector electrical connector(s) with the key on. Apply a power wire and a ground wire briefly to injector and see if fuel sprays out of injector. Do not do this test too long as the fuel will flood the engine too much fuel will hydro lock the engine so take care. Do not apply power or ground to the harness side injector connector. Check for any resistance with a multimeter you should be getting resistance from the coil windings inside each injector. Check for voltage on one wire and ground signal with the engine cranking. Noid testing lights will also show if there is grounding controlled by the computer.

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Thursday, September 3rd, 2020 AT 10:04 AM