Diesel leaking

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Nov 27, 2010 | 09:09 PM

gordeaux

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Diesel leaking

I'm leaking diesel!!! I have a 2002 F-250 with a 7.3 Power Stroke. Its puddling on the manifold and leaking to the ground. The smell is pretty strong. Someone suggested it was the o-rings on the fuel bowl draincock. I asked about this awhile ago, but the problem stopped, so I forgot about it. Since it started getting cold, the leak is back, maybe worse. Does anyone have a clue what I'm talking about? Can you guys give me some info. Thanks in advance!

Gordeaux

Nov 27, 2010 | 09:12 PM

clane

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Joined: Jul 2010

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From: Tucson

its the drain valve on the back of the fuel filter with yellow lever

Nov 27, 2010 | 09:19 PM

Kajtek1

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From: CA Bay Area

Per my experience 10-years mark is pretty common when lot of seals and orings are giving up.
I replaced drain valve orings this spring, now I have oil cooler orings to replace. The front seals seems to get wet as well.
So stash some money, since those things are not cheap even DIY.

Dec 4, 2010 | 07:40 PM

MARCUSO

Cross-Country

Joined: Aug 2010

Posts: 53

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From: Edmonton

The fix

You have to get some special o-rings for the yellow drain lever. Seemed to only leak in cold weather for me.

They are Viton 202 o-rings. They are not available in small quantities, you probably have to order a bunch.
I went to a local viton distributor (google one for your region) and bought 6 for something like 5 bucks. They couldn't sell them to me, but they accepted a donation to their charity fund.

Repair is super easy, just drain fuel bowl, remove small bolts, and replace.

you might have some luck getting them here. Ford will RAPE you if you go to them for a valve assembly.
Good luck

Dec 4, 2010 | 07:57 PM

papadelogan

Snowboard season cometh..

Joined: Jan 2006

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From: Gulf Coast of Florida

You can order the parts from Replacement O-rings for Ford Diesel Engines on THIS PAGE. it'll take about 20 minutes or so to swap them out, depending upon how big your hands are...

For questions like this you'd be better off posting in the '99-'03 7.3 diesel forum.

Dec 15, 2010 | 05:06 PM

gordeaux

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Well, I replaced the o-rings for the fuel bowl drain, and I still am getting a diesel leak. Its not the drain **** leaking, I checked. Any experts out there that can give me an idea of where to look next?

Thanks in advance,
Gordeaux

Dec 15, 2010 | 08:09 PM

Kajtek1

Postmaster

Joined: Apr 2006

Posts: 3,524

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From: CA Bay Area

Wash the engine and than line up the valley and all suspicious areas with paper towels. Start the engine and observe for wet marks on the towels. If none -take the truck for short drive and keep on checking.

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Dec 15, 2010 | 08:25 PM

timmyboy76

Lead Driver

Joined: Sep 2010

Posts: 7,793

Likes: 50

another possible leak, can be the 2-fuel rail lines that run on the inside of the valley, on the passenger side block. The "hold down" clamp, has a decency of rubbing a hole into the hardline.