Fuel Leak....Need help!!

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Feb 25, 2009 | 11:53 AM

m300636

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Joined: Jan 2009

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Fuel Leak....Need help!!

I recently bought a 2000 F550 Dump Truck with 67,000 miles. It has a small fuel leak with residual diesel fuel showing ontop of the engine block. During idle I noticed it dripping about every 20 seconds or so from a plastic nipple located on the back side from where the fuel filter is. The nipple is adjacent to what appears to be a fuel line (steel line connected with a rubber hose) coming in next to it. I am a rookie and first time owner of a 7.3 and was hoping someone might no what is causing this and how to fix it?

Thanks,
JIM

Feb 25, 2009 | 12:05 PM

guzzle92

Fleet Mechanic

Joined: Feb 2005

Posts: 1,797

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From: Northern Colorado

Fuel drain valve leak. Common and an easy fix.

Here is my writeup on how to fix it.

Feb 25, 2009 | 12:06 PM

superduty4x4

Hotshot

Joined: Jul 2003

Posts: 12,177

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From: Newport, WA

Simple fix, you need to change the O-rings in the fuel drain valve. There is a how-to on guzzle's site.
Edit- Bob beat me to the punch

Feb 25, 2009 | 01:02 PM

m300636

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You guys are awesome...thanks!

JIM

Feb 25, 2009 | 02:31 PM

afonda

Laughing Gas

Joined: Apr 2007

Posts: 1,028

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From: Broad Run, Va

If i understand ... this is common to happen with big swings in ambient temperature, specifically to the cold side.

this happened to me on the first cold snap last year. I havnt fixed it yet but it quit leaking on its own.

I bought the o-rings from guzzle though. I just need to put them in.

Feb 26, 2009 | 05:35 AM

m300636

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Fuel Leak

Yeh, that is a good point. i just recieved the truck about 3 weeks ago. The dealer drove the truck from PA to CT. It was very cold then...I had it checked out the day of delivery by my local garage and they picked up on the residual fuel atop the motor. It has since warmed up but the leak continues.
Good luck on the fix...it appears to be pretty simple.

Feb 26, 2009 | 06:47 AM

Supercab

Lead Driver

Joined: Feb 2000

Posts: 5,373

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From: Palm Bay, Florida

The fix is really quite simple, just follow Guzzle's dirrections, and pictures, I just recently did mine, and I used HIS VITON "O" rings-they are better designed for use with todays ultra low sulpher Diesel fuel, the PO of my truck had the whole drain valve replaced at a Ford dealer for just over $250.00 parts and labor, I ordered 2 sets of the VITON "O" rings from Guzzle and they were $3.00 each, and acording to what I have heard the VITON will last much much longer than the original "O" rings--first time out take your time and follow the dirrections and you will be fine, If I can do it you can!! Good Luck!!