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Fuel pump prob.. '99 F-150


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NY78
New User

Jul 25, 2011, 2:29 PM

Post #1 of 3 (1572 views)
Fuel pump prob.. '99 F-150 Sign In

I recently had a new fuel pump put in my 99 Ford F-150, 4.6 liter, 125,000 miles...after the old one failed...It has been running fine, but yesterday It wouldnt start...The engine cranked but the Fuel pump was not running...So I tapped the bottom of the gas tank with a rubber mallet, and the truck started right up. What could cause this intermittent condition with the fuel pump?? Thanks guys


Hammer Time
Ultimate Carjunky / Moderator
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Jul 25, 2011, 3:03 PM

Post #2 of 3 (1564 views)
Re: Fuel pump prob.. '99 F-150 Sign In

Those are classic symptoms of a bad fuel pump. If you didn't use a Motorcraft pump, that's not surprising.



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Discretesignals
Ultimate Carjunky / Moderator
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Jul 25, 2011, 6:27 PM

Post #3 of 3 (1554 views)
Re: Fuel pump prob.. '99 F-150 Sign In

To add to that:


If you had metal or other garbage laying in the bottom of the tank from the old pump or whatever, it might of took out your new pump. The sock doesn't filter everything.





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