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88 gmc pu 350ci eng. my prev ? was answered by john ...
Sent to Car Experts February 07 12:26 PM

88 gmc pu 350ci eng. my prev ? was answered by john referred to fuel sensor unit?? what and where is it as opposed to fuel sending unit? eng now will not start. no fuel apparent in tbi unit. (carb) eng prev died intermittently. when stepping on brakes or shifting from park to drive. sometimes loss of power and bucking or surging.at other times it started and ran perfectly. please help this Customer (name blocked for privacy) fix his grandaughters truck. I have had several 350 chevies but none like this with electronics on top of the valve cover.

Customer (name blocked for privacy)
Status:  Closed   Value: $30
Answer
February 7 3:19 PM (2 hours and 52 minutes and 16 seconds later)
         
ACCEPTEDCheck Mark

Hello Customer (name blocked for privacy), Super mechanic here. If you don't hear the fuel pump come on when you turn the key to the run position you will have to see if there is power getting to the pump. It will only pump for about 2 seconds and then go off. It is a good idea to have an assistant turn the key on while you listen down the filler tube.

I have had a lot of success in doing this by hitting the gas tank with a big rubber hammer and it sometimes will jarr the fuel pump, (or a connection) to where the engine will start. If it does, then you know that the problem is there. Let me know what you find, thanks

 



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