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1992 GMC Sierra 1500 wont stay running

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Dec 3, 2014, 4:14 PM

Post #1 of 2 (795 views)
1992 GMC Sierra 1500 wont stay running Sign In

Ive been working on my 1992 GMC Sierra 1500 4.3L V6 trying to get it running. First my starter was going bad and I had to push start it for a while to get it to start but then one day I went to go start her up and she wouldnt start. I had to replace the starter to check for spark and it turned out that there wasnt any spark. I then replaced the ECM and the coil. After replacing those 2 items I turned her over and she started right up. I drove around a little bit and then out of no where the truck died. After sitting for a little while it started back up. After I got home I later tried to start the truck and it wouldnt start. I put a little bit of fuel into the carborator and the truck started but then instantly died . I removed the cover to inspect the fuel injectors and it turns out there is no fuel being sprayed by the fuel injectors. Before replacing the coil and the ECm the injectors worked perfectly fine but now they arent working. Any clue on what the problem might be? Ive checked the fuel pump fuse and it is fine.

Ultimate Carjunky / Moderator
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Dec 3, 2014, 5:13 PM

Post #2 of 2 (777 views)
Re: 1992 GMC Sierra 1500 wont stay running Sign In

You need to find out what the fuel pressure is. On those you have to T in a fuel pressure gauge down at the fuel filter. Normally they should have around 13 psi on a TBI system.

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