Question about 1993 Ford F250
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Posted on Jan 02, 2017
SOURCE: fuel tanks not switching
It likely has a bad lift pump in the front tank. If this is a gas truck it has 3 fuel pumps, one in each tank (Low pressure, lift pumps) and one on the frame rail. Check for power and ground at the front tank for the lift pump.
Posted on Mar 01, 2009
Sounds like the rear fuel pump in the tank is not working and the float or sender is bad also. check to see if the rear pump is working should make a humming noise.
Posted on Jan 29, 2009
I would start by checking you switch for the tanks to make sure it is working right and if the front tanks fuel pump does not work after you check the switch I would get a 12 volt electrical test light and see if your getting power to the front fuel pump if your getting power to it I would say you have a bad pump . But some times the pump will run but the diaphragm gets weak in them.
Posted on Feb 24, 2009
Running tank one empty could have picked up **** from the bottom of the tank and clogged the in line filter that feeds the engine. It should be located under the truck on the left inner frame rail around the back of the cab area. Replace it don't try to clean it out it will just clog again. They are not that expensive from the locale parts house. DHR... EX Ford Line Mech
Posted on Apr 26, 2009
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