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No fuel pressure?

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Old 02-19-2010, 02:59 PM   #1
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Unhappy No fuel pressure?

89 F150 4x4 5.0
went to start my truck monday and all she did was turn over, my buddy used a stick to do something and said i have no fuel. we looked through out the truck, and manual and couldnt find a solution. (fuses, circuit breakers, ect.) the sending unit on the front tank has been jumpy since i got the truck, but when i switch between tanks they register different fuel levels as they should. and from what it looks like there are 3 different fuel pumps? im am moving across the country in less than 5 weeks and need this truck to run. thank you greatly for you help.
Rob G.
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Old 02-19-2010, 03:45 PM   #2
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Sounds like the hi pressure pump on the rail, if neither tanks are comming on line. Test pressure at rail. If your showing low pressure & your filter is ok, it would be the high pressure pump.

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Old 02-19-2010, 04:50 PM   #3
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and to add to what he said....if no pressure at all...then check the relay...

there is a test circuit to jumper to bypass all that for test purposes...
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