Help

Owen454 · Nov 30, 2018

I've been working on a 89 k3500 I’ve got it to run by squirting gas right down the barrels but I can’t get it to draw fuel from the tank. I’ve changed all the fuses and now believe it could be a fuel pump issue. Any help would be appreciated.

K201979 · Nov 30, 2018

Maybe it just needs a fuel pump. Theyr not too pricey i wouldnt think. Is it mechanical or electric pump? Most recent one i replaced was on an 84 cj7(mechanical) and it wasnt too spendy. Cant remember for sure but i feel like $20-25. Most these squares came with mechanical(lots have been replaced with inline electric), but im not sure on an 89. Someone will chime in. If not , shouldnt b to hard to lookup.

Customblue · Nov 30, 2018

Check power to the pump to eliminate broken wires also, make sure to check the ground as well.

Charlie · Nov 30, 2018

Owen454 · Nov 30, 2018

Customblue said:
Check power to the pump to eliminate broken wires also, make sure to check the ground as well.

I’m terrible with electrical how would I go about doing that?

Owen454 · Nov 30, 2018

K201979 said:
Maybe it just needs a fuel pump. Theyr not too pricey i wouldnt think. Is it mechanical or electric pump? Most recent one i replaced was on an 84 cj7(mechanical) and it wasnt too spendy. Cant remember for sure but i feel like $20-25. Most these squares came with mechanical(lots have been replaced with inline electric), but im not sure on an 89. Someone will chime in. If not , shouldnt b to hard to lookup.

It’s an electric pump I just wanted to know if there was anything else I could try bc once I take that tank off I will need a new one.

yevgenievich · Nov 30, 2018

There is a fuel pump relay on the firewall passenger side. It has a test lead. If you apply 12v to the test lead, it will directly power the fuel pump

K201979 · Nov 30, 2018

I was afraid it might b in the tank but it sounds like ur gettin the advice u need. Good luck!

PrairieDrifter · Nov 30, 2018

If the fuel pump is working you can stuff a rag around the filler neck hole and shoot some compressed air in the tank to help it prime up.

1973c10 · Dec 1, 2018

shiftpro · Dec 1, 2018

Just have to ask... is there gas in the tank?

Owen454 · Dec 1, 2018

shiftpro said:
Just have to ask... is there gas in the tank?

Yes that was what I checked first

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Owen454

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Customblue

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Charlie

Mopar by Birth. Chevy by Choice.

Owen454

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