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1996 Chevrolet 1500 Pickup Question: Why wont my 96 Chevy pickup start?

 

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Rink56, 4.3L V6, Grafton, ND, January 07, 2014, 20:14
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I shut it off and went back to start it and turns over but wont fire. Gave it a shot of gas and got it going and drove it for an hour, just went to start it to check and it wont fire again. Any ideas

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  • Answer #1

    pushrod January 07, 2014, 20:39
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     Master

    Fuel pump most likely! Hit the center of the gas tank on the bottom with a rubber mallet while a helper turns key to "start" if the engine starts, replace the fuel pump! Hint, if pump replacement is needed, remove the bed to do so!! This sending unit has metal threaded fuel lines that are a b...h to get loose from under the truck. Only takes a few minutes to pull the bed then the pump is satring you in the face!! See youtube.

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    Rink56, January 07, 2014, 20:53
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    Will give it a try after work tomorrow ty

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    pushrod, January 07, 2014, 21:00
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    U bet!

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    ProfessorG, January 07, 2014, 21:04
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    That does work if the fuel pump doesn't work at all when cranking. But you said you gave it a shot of gas then it started. I could be the dumbest guy on the block but sure sounded like a different issue.

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    pushrod, January 08, 2014, 07:15
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    I agree it sure could be a number of other things but the banging on the tank is something that doesn't take o lot of tools that a diy'er might not have at the house. I had one last month doing this same thing, add gas start the engine and the alt added a couple volts and the pump would run! There is no one thing for certain that is going to fix this, just process of elimination. What is better to start of with than hitting it with a hammer? A BFH. Something i have been tempted to do on many occasions! Smack dab in the middle of the hood!!

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    ProfessorG, January 08, 2014, 07:31
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    I know the feeling, and as well, I have used and suggested using the hammer for many years and that has worked if nothing else did, then hit it and it works. Was just considering the pump did run after priming engine and no bag on the tank. Either way, what ever works for the good of the repair.

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  • Answer #2

    G. T. Service Center (3112 Answers) , Stephenville, TX - (254) 638-3236
    ProfessorG January 07, 2014, 20:40
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    Have the primary start circuit checked. It's late for me right now, but it sounds like the relay is not engaging at initial start, but after the oil pressure builds the oil pressure switch will take over the signal to keep the fuel pump running. It could also be the pump is losing its prime pressure, allowing the pump to bleed back and takes some time to re-prime at initial start up. Going to bed right now, will be at the shop in the morning, and will have more information available to me. Sorry Pr, again.

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