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Old 01-09-2017, 06:59 PM
kennycullipher kennycullipher is offline
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Default 2003 6.0 nightmare

I have a 03 F250 crew cab that has fuel system problems. New Motorcraft filters, new Motorcraft fuel pump (frame rail) new pressure regulator kit, cap. It's starving for fuel, it will run fine until you put a load on the engine then it shuts down. Open the filter cap and no fuel.
I am out of ideas

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Old 01-09-2017, 07:01 PM
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How full is the tank? If the sock falls off, youll run out of fuel at about 1/4ish tank. Not only that, but the 6.0 sending units arent the most reliable parts out there...
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04 cclb IDP and TSD tunes, KC Stage 2 hi pressure, S476 atmosphere, Odawg Stage 2 ported intake, RCD Stage 1 cam, RCD lifters and pushrods, RCD 120# valve springs, ARP 625s, o ringed heads, Warren 7mm 250/100 hybrids, Strictly bowl dereete regulated return, Air Dog 2 4g, Snow stage 2 water/meth
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Old 01-09-2017, 07:02 PM
kennycullipher kennycullipher is offline
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New sock also forgot about that

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Old 01-09-2017, 07:04 PM
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Did you put the hoses on the fuel pump right? On the backside, one section is suction, other is return. If they are backwards it will cause goofy chit too.
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04 cclb IDP and TSD tunes, KC Stage 2 hi pressure, S476 atmosphere, Odawg Stage 2 ported intake, RCD Stage 1 cam, RCD lifters and pushrods, RCD 120# valve springs, ARP 625s, o ringed heads, Warren 7mm 250/100 hybrids, Strictly bowl dereete regulated return, Air Dog 2 4g, Snow stage 2 water/meth
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Old 01-09-2017, 07:08 PM
kennycullipher kennycullipher is offline
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I put them on like they came off. They are pretty dummy proof

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Old 01-10-2017, 03:58 AM
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Any chance you checked oil pressure?


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Bulletproofed, warren 190/100's,barder stage 2 64.7x92x66, driven diesel regulated return w/bowl removed, fass 125, updated stc fitting, mishimoto boost tubes, mbrp 4" turbo back, sctx4, PHP ficm tuner, nolimit intake

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  #7  
Old 01-10-2017, 05:15 AM
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A leaking injector copper washer can put combustion pressure in the fuel rail and push all the fuel out.
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Old 01-10-2017, 03:09 PM
kennycullipher kennycullipher is offline
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Both low and high oil pressure are good. When I cycle the fuel pump to fill the bowl the fuel drains back out of the supply line. The return line feel like it has a vacuum on it

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Old 01-10-2017, 03:13 PM
kennycullipher kennycullipher is offline
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Quote:
Originally Posted by 6.0 Tech View Post
Did you put the hoses on the fuel pump right? On the backside, one section is suction, other is return. If they are backwards it will cause goofy chit too.
What are some signs that the sending unit is bad

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Old 01-10-2017, 09:15 PM
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Not reading proper level. It doesnt sound like thats it though. Had a buddy put injectors in one, wouldnt run right. Would barely start after hedrove it. Towed it to the shop, gauge said al.ost 1/2 tank. Put 10 galloms in it, fired right up and ran like a top.
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04 cclb IDP and TSD tunes, KC Stage 2 hi pressure, S476 atmosphere, Odawg Stage 2 ported intake, RCD Stage 1 cam, RCD lifters and pushrods, RCD 120# valve springs, ARP 625s, o ringed heads, Warren 7mm 250/100 hybrids, Strictly bowl dereete regulated return, Air Dog 2 4g, Snow stage 2 water/meth
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