No Fuel Delivery

TREEOY

MEMBER
1993 GMC SIERRA
5.7L
V8
2WD
AUTOMATIC
130,456 MILES

I replaced the fuel pump and it is functioning. I hear it running and I loosened the line on the sending side of the filter and I saw that the pump was pressurizing the line. However the injectors were not delivering fuel. I am having to replace the lines because due to age when I loosened the filter the line twisted and now there is a hole. So aside from the fuel lines needing to be replaced, what else could be causing the injectors to not be delivering fuel?

5 Replies

WRENCHTECH

MECHANIC
20,761 POSTS

Check to see if you have power to one side of the injector plug with the key on.
Does your check engine light come on for bulb check when the key is turned on?

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Sunday, July 31st, 2016 AT 11:48 AM

TREEOY

MEMBER
3 POSTS

@wrenchtech, no check engine lights or anything come on.
I will give it a look and get back to you.

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Sunday, July 31st, 2016 AT 1:01 PM

WRENCHTECH

MECHANIC
20,761 POSTS

Test all your fuses with a test light. The computer is not powering up.

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Sunday, July 31st, 2016 AT 1:03 PM

TREEOY

MEMBER
3 POSTS

Fuses are fine. The lights flash on like they normally would when the ignition is turned, but they all turn back off after a few seconds except for the battery light which would go off after the engine fires up. Checked the injector plugs and they are fine too. Could it be the injectors themselves that need to be replaced?

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Sunday, July 31st, 2016 AT 2:17 PM

WRENCHTECH