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Old April 15th, 2007, 03:37 PM   #1
love2wheel
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Default fuel pressure???

ok i have a 95 s-10 zr2. i was driving it and it quit running. just died. i fiqured it was fuel related. i have spark and compression. i only got 10 psi at the fuel rail (before i replaced anything. so far i have replaced the cpi unit, fuel filter, and fuel pump. after i installed the new pump i only get 15 psi at the rail. so i checked it right before the fuel filter and i still only have 15psi. and the truck still wont start. does anybody have an idea as to why i cant get more then 15psi out of the pump? i know the truck needs more then 30psi to start. i put 12volts right to the pump and still only get 15psi? im at a lose. does anyone have any ideas??? please help, this problem is driving me NUTS!!!
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Old April 17th, 2007, 02:57 PM   #2
Tranny Tom
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You may have the wrong pump in it, or a bad ground. That year they had 2 different versions of that engine the vortec and a tbi. the tbi requires less fuel pressure.
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Old April 17th, 2007, 08:13 PM   #3
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yeah i pulled the pump back out and it was the wrong one they gave me the tpi version when i needed the cpi version thanks
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