[Thombyrnes]

Strange problem......I have a 2001 F-250 7.3 that will start up, idle and drive approximately 10 miles and then it will act as though it is running out of fuel. I have replaced the lift pump and checked the filter. If I punch the throttle it will accelerate and then start to act the same way earlier than 10 miles. I am really stumped. there is plenty of fuel getting to the filter bowl and I just cant seem to figure it out..........any ideas???? Thanks.

 

[greenskeeper79]

off the top of my head....


- air being pulled into fuel lines

- clogged screens in the tank

 

[RT]

You need to put a fuel pressure gauge on the post filter side of the bowl and watch it when the engine acts up.


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[bigb]

You need to put a fuel pressure gauge on the post filter side of the bowl and watch it when the engine acts up.


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Agreed. I can remember some years back someone on this forum stated that a fuel pressure gauge was the most useless gauge you could waste your money and space on. I disagreed at the time and as these trucks continue to age I now not only still disagree but I feel that a FP gauge is one of the most important gauges to have. You can spend lots of time and money trying to figure out if it is a fuel delivery problem or you can glance at the gauge and know right away.

 

[BS Hauler]

Check the rubber fuel line where it comes out of the tank and goes to the frame. It rubs against the frame and makes a spot in the hose to suck air.