puddle of fuel

[ridgerunner98570]

I have noticed a puddle of fuel on the ground, small puddle under engine. It looks like it is coming from on top of the water seperator houseing. Could this be those two small "O" rings I see people talking about? And if it is, where do I get them online? I live quite remote and its a long trip to a parts house. Plus what causes them to fail? Thanks for the answers.

[vitalidle]

Here read this: Separator Valve Rebuild You should be able to buy them at any parts store or hydraulic shop.

[Sabre2th]

If the leak is coming from the top of the filter housing it could be that your cap seal is not seated or installed correctly. If the leak is coming from the back side of the housing, then probably the drain valve o-rings. The newer diesel we have to buy now is responsible for problems that have come about with various o-rings and gaskets. ULSD lacks the aromatics the old LSD had, hence o-rings, seals, and gaskets don't swell like they used to...
Tom

[bmiller2000]

This fix is like going to the doctor for a physical. I hope ya got small hands and fingers or its going to be tight. Remember to breath and go slow it will test your patience, and a long handle 1/4 fine tooth ratchet will go a long way in my opinion.

[jackpine savages]

Originally Posted by vitalidle

Here read this: Separator Valve Rebuild You should be able to buy them at any parts store or hydraulic shop.

Thanks for the link to the great walk through. Mine just started leaking yesterday after a fill up @ Shell station.

The ULSD is a contributor to these failures? What're the newer trucks using for o-rings and seals?

Thanks again.....

[NCHornet]

It is actually the older fuel it swelled these O rings and the new fuel shrinks them and causes the leak. Using fresh Viton rings will fix the problem.