fuel pump
Elder User
Joined: Mar 2010
Posts: 601
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It's entirely possible that you may never have to change it. If all the wiring is sound and full power is operating the pump, that's about all you can hope for. Besides, even if you had a spare with you it would be a little bit of a pain to try and repair it while you are parked who knows where.
I've never had one go bad in my personal trucks, but have changed a few in others. For some reason, the bulk of the pump changes have been in full size cars, not trucks.
Dave
I've never had one go bad in my personal trucks, but have changed a few in others. For some reason, the bulk of the pump changes have been in full size cars, not trucks.
Dave
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Senior User
Joined: Aug 2008
Posts: 201
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i was thinking about just changing it before i begin my journey lol, i had one go bad in a bronco after 170k and i was told ford fuel pumps are only made to last 150k.. but on the other hand ive only ever changed 2 and they have both been over 150k and the truck runs like its brand new so idk it just worries me so depending on what y'all say i might just go ahead n change it
Senior User
Joined: Dec 2009
Posts: 112
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I dunno about all that. I've got 300,000K on my 4.2L and never had to change a part til now. Still getting 43 psi fuel pressure.
You ought to every so often add a little 2 cycle oil to the fuel tank. One quart for a full 21 gal tank. That only gives the fuel a very light blue hue and will not be too much for the OS sensors or plugs. It will help lubricate your injectors and keep the O-rings soft, lubricate the fuel pump, increase octane a little and provide a little lube for piston up travel, and the residual oils in the exhause vapors will lubricate the exhaust valve guides which are the ones usually to burn out first.
You ought to every so often add a little 2 cycle oil to the fuel tank. One quart for a full 21 gal tank. That only gives the fuel a very light blue hue and will not be too much for the OS sensors or plugs. It will help lubricate your injectors and keep the O-rings soft, lubricate the fuel pump, increase octane a little and provide a little lube for piston up travel, and the residual oils in the exhause vapors will lubricate the exhaust valve guides which are the ones usually to burn out first.
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