Will not start no fuel going to the injectors

BULLITT1939

MEMBER
1988 CHEVROLET SILVERADO
5.7L
V8
4WD
85,000 MILES

Car will not start. We have spark just cannot get injectors to spray. Fuel pump is working we are getting fuel to throttle body. Changed ignition control module, injectors, and throttle body injector plugs. Can pour gas in throttle body and it will run. Changed distributor cap and rotor. Any other suggestions?

7 Replies

HMAC300

MECHANIC
48,601 POSTS

Fuel pressure should be 9-11 psi no lower. Scan for codes. If spark is not right injectors will not work. Check coolant sensor should be high resistance cold and goes to about 700 ohms when engine is heated up. Check resistance of pick up coil in dist. 400-1000 ohms. See pictures as well.

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Thursday, September 3rd, 2020 AT 10:01 AM

BULLITT1939

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33 POSTS

We are at our camp so we are limited to tools. We do not have a fuel pressure gauge with us or noid light with us. We have a meter and we have power to the injectors 6 volts. If we pull the fuel at the filter the gas rushes out with key turn. We are getting fuel to the throttle body.

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Thursday, September 3rd, 2020 AT 10:01 AM

HMAC300

MECHANIC
48,601 POSTS

Itmay be the injector is bad then but I wouldn't spend money on a tbi unit until it's checked out further. Also the wires on those would loose contact at injector and not work.

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Thursday, September 3rd, 2020 AT 10:01 AM

BULLITT1939

MEMBER
33 POSTS

I do believe the fuel pump was the issue. It was pumping just didn't have enough pressure. We basically changed most of the fuel system and a did few other maintance things while we had some things taken apart and she is running better than I ever remember. My dad would be proud it is up and running again!

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Thursday, September 3rd, 2020 AT 10:01 AM