problem with dp F5! - Diesel Truck Forum - TheDieselGarage.com
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post #1 of 8 (permalink) Old 09-02-2010, 06:56 PM Thread Starter
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problem with dp F5!

I bought my DP from one of my buddys with a 97 PSD and put it in my 96 PSD. he had his costum tuned for HPOP and injectors, and my truck is stock. I sent it off to DP after it being in my truck. it ran fine on 80hp tow but on 120 it would fall on its face. i sent it off and got the 80hp 120hp and 140hp and now when it warms up it is worse than it was before. I talked to james from DP and he said i need to check my fuel preesure, and i may need to get a new fuel pump. anyone have any other suggestions?
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post #2 of 8 (permalink) Old 09-02-2010, 07:23 PM
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Maybe an HPOP issue as well?



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post #3 of 8 (permalink) Old 09-03-2010, 12:40 AM Thread Starter
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yea could be james told me when it runs good when its still kinda cold but then runs horrible when it warm up it has somthing to do with the fuel pressure.
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post #4 of 8 (permalink) Old 09-03-2010, 02:30 AM
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If the Fuel Pump is failing when it's hot then yes, it could be.

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post #5 of 8 (permalink) Old 09-03-2010, 12:14 PM
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Are you still running the factory manual fuel pump??? on my buddies 95 w/ 160cc injectors and stock fuel pump the truck never falls on its face...

Aaron - 2004 F350 "Offroad Edition"

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post #6 of 8 (permalink) Old 09-03-2010, 04:02 PM Thread Starter
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yea its all stock fuel pump.
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post #7 of 8 (permalink) Old 09-05-2010, 07:00 AM
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yea its all stock fuel pump.
hay man everythng can and will fail thats just mechanics and physics, just fix the pump amd maybe upgrade. its all you can do.

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post #8 of 8 (permalink) Old 09-07-2010, 06:41 PM Thread Starter
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Yea im goin to be getting injectors in the future so ill proly just go ahead and by the airdog II
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