7.3 valley oil leak !HELP ! - Ford Powerstroke Diesel Forum
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Old 04-16-2013, 04:01 AM
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7.3 valley oil leak !HELP !

Hi People,
I have a 2001 F350 with the 7.3L in it and I notied the other day I had a oil leak, at first it looked as if the rear main was leaking but after reading on this site I checked the engine valley and I could see small puddles of oil in valley.
I have looked and even added oil dye and UV lighted the engine for hours.
I looked hard at the HPOP and lines no leaks that I can see anyways, even got my hand down under the HPOP to see if the bottom maybe leaking and I could not fined any leaks.
Looked at the turbo felt with my hand all around it, no oil.
The truck is not leaking super bad but I am getting drips were ever I park.
where else do you guys think it could be leaking? PS I also checked around the valve cover gaskets no dye or fresh oil.
This is weird I can see oil and dye in the bottom of the valley in very small puddles but I have no clue where it comes from.

Please help ?
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Old 04-16-2013, 04:28 AM
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Did you watch while the engine was running,?

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Old 04-16-2013, 05:07 AM
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Quote:
Originally Posted by hucorey View Post
Did you watch while the engine was running,?

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Yah I even ran the engine up to 2000 RPMs on high idel still could not fined anything.. Not leaking real bad slow leak..
I'm going to start ripping crap off the engine soon and just replace all the hpop seals and gaskets and top of engine, BUT I would like to save some money and time if anyone has a ideal I'm happy to check it out before I do all of that..

In the far front of the hpop on the bottom you really can't feel that far back with your hand so it could be the hpop gasket ? never seen one of those leak but could be.
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Old 04-16-2013, 05:22 AM
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UPDATE: I still don't know 4 sure where the oil is comming from but I was just outside again in the dark with the UV light and I can see a trail of oil/dye from under the hpop going back to the drain hole in the top of the valley with small puddles in the casting dents in the valley.
Not sure but if it was leaking in the back of the engine would the oil run forward to the front ? the engine has a slight slant to the transmission end of the engine.
Really starting to think hpop gasket or the back seal.

Last edited by TundraRat; 04-16-2013 at 05:38 AM. Reason: half a sleep
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Old 04-16-2013, 05:23 AM
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Did you clean the crap outta it first?
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Old 04-16-2013, 05:26 AM
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Sad to say I did not wish the engine down first. I could of but I don't have a shop and I'm in northern Alaska were it's still -20 F. Also the engine is really clean in my truck and its a new small leak..
I'll brake clean the top before I pull the hpop.
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Old 04-16-2013, 05:38 AM
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Yikes.. -20 is freakin cold. I guess I should have known since you were adding the dye. I would try and wipe down the vally as best you can to get rid of the puddle and then search for leaks. usual culprets are already stated I believe, HPOP, turbo mount to engine, turbo mount to turbo..
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Old 04-16-2013, 05:42 AM
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Campbellflage Do you think the oil would run forward from the turbo to the hpop?
I just got good at working on a crappy 6.5L GM then sold it, now the learning starts all over again. lol
I'm going to spray it down with engine bright today and wash it off with the engine warmed up , your right that will help.
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Old 04-16-2013, 05:47 AM
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Try to soak-up the puddles in the valley as best you can. Then, take some papertowels and roll them up into a, kind of, Giant Kotex Pad and slide them into the valley. Drive the truck some and see where the oil first appears, at the Front or Back, to determine of it's origins are from the Turbo or the HPOP.

Here's an interesting video, BUT I have to warn you about this guy,,,, he makes Great Videos, that Does NOT make him infallible though. He's got some really GOOFY theories (not about this though) So, don't take him as your Guru, as many do Confirm his advice on anything else he says

POWERSTROKEHELP.COM - The Information Source for Ford Power Stroke Diesel Owners
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Old 04-16-2013, 05:58 AM
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nice video, **** I hope its not the turbo ...

Last edited by TundraRat; 04-16-2013 at 06:04 AM.
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7.3 valley leak, 7.3l oil leak

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