Fuel leak on motor!! please help - Ford Powerstroke Diesel Forum
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Old 12-12-2010, 03:58 PM
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Fuel leak on motor!! please help

Have been smelling diesel in cab for the past 6 months and thought it was a tiny leak in my down pipe because it came off once before. while changing my fuel filters today, noticed diesel leaking out where you put the fuel filter up on top of the motor. It's leaking out of the piece on the right side looking at the truck. It is an over shaped piece with 2 black allen wrench screws. What is this and where do I buy a replacement to fix it?? Before fuel filter change, it leaked a little. Now it's putting a drop out every 1-2 seconds. Probably lost about a gallon of diesel from my friends house to mine. ~40 miles.
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Old 12-12-2010, 04:13 PM
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BUT, it does run a whole lot better. I don't know how old those filters were. I've put 15,000 on the truck and it's been running the same ever since I bought it until I changed them out today. No more turbo lag on takeoff and doesn't feel like it's bogging from 50-55
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Old 12-12-2010, 05:05 PM
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I looked at it before, but I had to go finish supper before it burned, I was gonna post that you need to reseal your fuel filter bowl, There is a kit from Ford.
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Old 12-12-2010, 05:08 PM
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I read that I need to just get a new oring for it? do you have a part number or link for the kit?
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Old 12-12-2010, 05:22 PM
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theres a gasket that goes behind the pressure regulator cover

you might as well get the whole fuel pressure regulator kit. comes with everything, screws, cover, gasket, orings, spring etc

3C3Z-9T517-AG
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Old 12-12-2010, 05:24 PM
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what is the advantage of buying the kit versus the gasket?


(besides the obvious of getting new parts. why replace all that when it's just the gasket?)

Last edited by 06kingranch6.0; 12-12-2010 at 05:33 PM.
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Old 12-12-2010, 05:45 PM
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The new pressure regulator will raise your fuel pressure approx 10 psi over what the old regulator is set for. If you get the gasket kit there is o-rings for where all of the fuel lines attach. If I remember correctly the gasket kit is cheaper than the regulator, which is why I said to simply reseal it, but that is your choice. However make sure your parts guy doesn't look up a ipr valve, they are both called fuel pressure regulators in the parts catalog. I don't have part numbers for them. Sorry.
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Old 12-12-2010, 05:49 PM
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DieselDr. Did you mean buy a new FPR? Found the gasket on ford's parts website and below is part number and cost.

Cost of the gasket itself:
Diesel Fuel Filter Seal Kit
Part #: 9C065
$4.52
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Old 12-12-2010, 06:05 PM
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Fuel filter parts If you look at the pic the regulator kit should be the 9t517, and the whole gasket kit should be the 9c165.
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Old 12-12-2010, 06:08 PM
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i'm a big fan of "while your in there, change it all". 9C065 is just the basic part number

if you just want to do the gasket check this thread out

Fuel Leaking/Smell in cab
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