Fuel pressure drops to zero
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Mountain Pass
Joined: Sep 2016
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Fuel pressure drops to zero
1999 F250 5.4 starts and idles fine for a few minutes then fuel pressure randomly drops all the way down and motor dies. Pump,filter and injectors are all brand new. Never had this problem until today when I went to drop it off at the tranny shop
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Mountain Pass
Joined: Sep 2016
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Well I had a problem where the fuel rail was clogged by mud dobber nest I want to say the pump filter might be clogged up, pulled the filter and quite a bit of nasty stuff came out I put the inlet side back on and primed it a few times to flush it out and it’s running Better but still dies pretty often I tested the FPR and it’s good I assume it could always be electrical somewhere but I didn’t see any wires were rubbing on the frame or anything exposed it was a random all of sudden problem
Mountain Pass
Joined: Jun 2011
Posts: 138
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From: Santa Fe, TX
How did a mud dobber get into the fuel rail?
If you have a lot of trash in the fuel tank then you might be clogging up the pump filter like you're thinking. i'd clean the tank if there is a bunch of stuff in there.
If you have a lot of trash in the fuel tank then you might be clogging up the pump filter like you're thinking. i'd clean the tank if there is a bunch of stuff in there.
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Mountain Pass
Joined: Sep 2016
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had the motor out for a month or so I could build it and I left the fuel rails dangling without plugging them
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firemediceric
1999 - 2003 7.3L Power Stroke Diesel
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Dec 12, 2009 01:46 PM
