Question about 1997 Ford F350 Crew Cab

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How to change a fuel pump on a 7.3 diesel eng.

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The best way to change the pump is to remove the fuel filter housing. Unhook all fuel lines from the housing and then unplug the electrical fittings. two bolts hold the housing down, remove them and pull the housing out of the way. Now you cn remove the fuel pump. I woulg replace all the rubber fuel line when it is out. It is easier to put everything back together if you spray WD-40 on the inside of all the hoses.

Posted on Nov 14, 2009

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Posted on Jan 02, 2017

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SOURCE: I have a 1993 ext cab f-250 that has deveoped a

The lift pump itself needs to be inspected, either its got loose or cracked.There is one way valve in the lift pump if its blocked/ stuck closed then fuel will drain out .The lift pump needs to be taken out and checked.-------- The lift pump, the valve and the lift pump fitting needs to be inspected. This will help.Thanks.Helpmech.

Posted on Aug 20, 2011

  • 409 Answers

SOURCE: Unleaded gas in a diesel fuel tank

do not worry about draining it, pour about 6 to 8 ounces of engine oil in it, and top it up with fresh fuel, it will be fine. The only way to drain the tank is to remove it and turn it over.

Posted on Apr 26, 2010

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SOURCE: no fuel delivery to eng., no voltage spurratic

in this case i would say you have a broken wire to the pump,check the wire/retrace it and see if you can see any break if in doubt replace it.adrian,,,,

Posted on Jul 31, 2010

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How does the diesel fuel system work -does it have a lift pump


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Fuel pump wiring diagram 1988 chevy truck


I personally have 1988 GMC truck and had to replace the fuel pump. I found all the info including wiring diagram in a haynes repair manual. These can be purchased in most automotive parts stores. Something I found interesting is that the fuel pump's operation works through the oil pressure switch, located by the distributor screwed into the engine block. If this switch is stuck or sticking it will affect the fuel pump. Replaced a good fuel pump for nothing! The truck had sit up for awhile and the ground wire connections had to be cleaned as well.

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