Humming from under gas tank resulting in dead battery, 1989 Ford
1989 Ford country Squire Wagon, V8 5 liter. Humming from under car near gas tank, resulting in dead battery. I expect that it may be the fuel pump, and believe the pump is actually inside of the fuel tank. Or could this possibly be related to a relay or frayed wire?
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Ford had a small fuel filter up near ware the fuel line comes into the eighter the carb or fuel injector main on some fuel injucter engines . Im not sure what engine you have .But my ford use to give me a lot of problems with this filter until i cut into the fuel line and added a inline filter before it mine is an 85 . So look where the fuel line attaches to the fuel inlet its a 3 or 4 dollar part but its a vary fine mesh filter and clogs easy the older the vehicle is the more sediment you end up with in your tank .I did mine 10 years ago haven't had a problem sence Good luck
The fuel pump is in the gas tank, you test it by hooking up a pressure guage to the fuel injector supply manifold, there is a port there that looks like a tire valve, you will need a fuel pressure guage, Kragen auto and other stores will loan these out, you can also open the gas cap and listen for a humming type noise when the key is first turned on, but the fuel pressure test is best.