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Old 01-02-2011, 09:50 PM
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help guys 88 chevey 1500 no fuel to motor

ok heres the scoop ,bought a truck from my dad 88 chevy 1500 5.7 tb ing . 13000 miles sat for 15 years . drained a full tank of bad gas out of it , put 5 gal freash in it . installed new battery, no fuel to tb. will run like new on a prime to tb. pulled the return line and main fuel feed line off tb , no fuel with key on . shot a 1/2 can gumout in both lines shot air down lines could hear air in tank good on return line and not as much air on the pressure side but there was air going to tank . put a new fuel pump relay on it and replaced the 20 amp pump fuse it was not blown. still no gas out lines . motor turns over and starts good on prime and holds 60psi oil pressure . is there enything im missing to check or is it the intank pump . jim enything that i need to do to make shure its the pump

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Old 01-03-2011, 03:36 AM
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Your fuel pump screen is gummed up..... long story short.... drop the tank and clean it up.
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Old 01-03-2011, 05:25 AM
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Can you hear the pump running when you turn the key on?
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Old 01-03-2011, 07:56 AM
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pump not runing

pump not runing put my ear to tank .. jim
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Old 01-03-2011, 09:15 AM
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Another question....Once you prime the throttle body and start it, does it keep running?

Reason I ask is, I had an 88 Chevy van, that it would take forever to get gas.......It would need to crank until the oil pressure built up enough to bypass the relay. Then it would start....The fuel pump relay is only there to start the engine when there is no oil pressure. It then shuts off and if there is enough oil pressure the pump keeps running. I thought my relay was shot, but it turned out it was just a broken wire going to the relay........something to check out
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Old 01-03-2011, 04:46 PM
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pump may not be running due to no demand, oil pressure etc.... the relay only startes the pump for 2 sec etc.... IMO.... bypass the relay if the pump still doesn't run, drop the tank pull the pump clean the screen, test the pump
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Old 01-03-2011, 06:00 PM
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If the tank was full of degraded fuel ,the pump is toast, and so is the fuelfilter.Dont burn out a new pump by running it with a old plugged fuel filter. The new pump comes with a screen for in the tank.Put new gas in it after you replace the pump and dump in a can of seafoam.
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Old 01-04-2011, 12:07 AM
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pump

well put new pump and sending unit and new filter truck runs like a new one .. what a barn find now it to car wash for a bath .. jim
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Old 01-04-2011, 03:50 AM
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Glad to hear you got it runnin!
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