could lack of fuel be related to wiring and not fuel pump?

[seeya]

so i was wondering, my fuel pump whent on my truck once before, and i replaced it with a used one, it worked for a while, then one day i whent out to start my truck and it did, but then it just died like it lost power. so i boost the battery and the thing will crank over, but will not fire.... my guess is fuel pump because there was no fuel at the shradder valve either, but could it be due to some electrical short or bad battery, the thing will never stay charged, and i'm getting a bunch of the greenish buildup around both batterr poles. any ideas would be greatly appreciated, i would hate to go buy a new pump to find out its somethin simple...

[The Blown Blazer]

Try jumping the power wire to the pump to see if it'll run, if so then trace the wire back and check for continuity.

[Yogi]

I would start by cleaning the green stuff off of the battery posts and get the battery load tested.

[seeya]

yeah, i've cleaned it a few times, they corrode up like within a couple days. like reeally really badly lol.

new battery?

[Yogi]

Try brushing the terminals with some bleach after you get the crud off. Bleach will neutralize the surface acid. Don't rinse off the bleach. You could also try some of those felt washers with neutralizer on them that they sell at the auto parts stores. If your battery is leaking at the terminals, then it is time to replace it.

[jeffawong]

Could be related - also clean any ground connection to the body. this could either be for the fuel pump and/or battery ground.

if you have not done a fuel pressure check you need to do this to either confirm a problem related to fuel pump and/or regulator. you need at least high 50's to 60+ key on engine off to start. lower while running is ok but lower that low 50's will likely result in rough engine idle.

good luck.

[seeya]

ok how do i go about doing a pressure test? my truck can't really go anywhere lol,

[lesterl]

Shrader valve on fuel supply line, what year is your truck?

[seeya]

it is a 2000, how do i check it, i know where this shrader valve is, i've pushed it in, and there is no fuel that sprays out like before...

[Yogi]

Quote: Originally Posted by seeya

it is a 2000, how do i check it, i know where this shrader valve is, i've pushed it in, and there is no fuel that sprays out like before...

Sounds like your pump is dead.

Can you hear it humming when you first turn the key? It should run for about 3 sec.

[seeya]

no humming at all
i figured it was the pump, but just wanted to make sure..

[lesterl]

Check the fuse, check the relay, check the voltage at the pump when prime connector is powered. If those are good U need a new pump.

[Yogi]

Quote: Originally Posted by lesterl

Check the fuse, check the relay, check the voltage at the pump when prime connector is powered. If those are good U need a new pump.

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