Blown rear engine seal?
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Junior User
Joined: May 2005
Posts: 51
Likes: 0
From: BC Interior
Blown rear engine seal?
After a 1300km run to the north. Climbing a moderate hill, the engine started losing power, and I smelled burning oil. Pulled over and checked oil. Nothing on dipstick. Put in 5 litres of oil and ran another 20km, stopped and checked oil. Nothing on dipstick. Started engine, looked underneath and oil flying everywhere from back of engine. Shut off, and towed for 200 km. Great start for winter work eh? Question, without pulling transmission etc, how do I find out what type of rear seal is in there. Or, is it possible that a camshaft plug/cap let go? Either way, 5 litres of oil in 20km is a baaaad leak. any suggestions?
'96 F350
7.3
5spd 4x4
'96 F350
7.3
5spd 4x4
Senior User
Joined: Jul 2005
Posts: 429
Likes: 0
From: new york
That really sucks.I can't really help you except to tell you that a blown rear seal on these trucks is very uncommon from what I've read on here. Someone more knowledgable than me will chime in soon.Good luck
Hotshot
Joined: Aug 2006
Posts: 10,764
Likes: 39
I'd be looking at the high pressure oil lines from the HPOP ,,possibly the oil cooler ..(not likely the rear main )..
Any oil from the top of the motor will make its way down to the rear of the engine ..
If the engine is still running ok ,,must not be too bad a leak
Any oil from the top of the motor will make its way down to the rear of the engine ..
If the engine is still running ok ,,must not be too bad a leak
Laughing Gas
Joined: Apr 2007
Posts: 779
Likes: 0
From: Burton, Texas
Well, I had a really bad oil leak not too long ago that turned out to be a cracked turbo. But mine wasn't as bad as yours. The first thing you will be asked about your leak is, are you sure it's not coming from above, from the top of the motor. If it was it would run down the back of the motor and would make you think "rear main seal." That's the first thing I thought of on mine. If you are loosing that much oil that quickly, it's gotta be coming out under a lot of pressure. That makes me think High Pressure Oil Pump -- there are lots of folks here much more knowledgeable than me that I am sure will be along directly. Meanwhile, I would go ahead and check to see if that leak is originating at the top of the motor so that you will be prepared to answer that question. Look down from the top and see if you see oil in the valley.
Post Fiend
Joined: Mar 2007
Posts: 9,010
Likes: 5
From: Johnson City, TN.
Definately look on top of the motor first. You may have to clean it then crank it to find the general vacinity it is coming from. Post back.
Norton you need reps. You are every where trying to help. Thanx. That is what this place is all about.
Norton you need reps. You are every where trying to help. Thanx. That is what this place is all about.
Laughing Gas
Joined: Apr 2007
Posts: 779
Likes: 0
From: Burton, Texas
Thanks though, that means a lot.
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Posting Guru
Joined: Jan 2003
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From: Munroe falls, Ohio
Look at the high pressure oil gallery end plugs. They are the 2" plugs at the front and rear of the heads with a 1/2" square notched in the center
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From: Celaya, Gto. MX
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From: Gladwin,Mi
Same boat as you less than a year ago...I have learned tons from here and learn more everyday....I dont think it stops....I try and help as much as I can....If I cant I end up searching for the persons problem just to ease my mind so I know it for future reference.
FOREIGN GURU
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From: Celaya, Gto. MX
I dont understand, 
some times when I open this posts, the pic I posted doesnt appears and other times it does; any way you can click in the square with the red X with a righ click in the mouse, then go to properties and copy and paste the URL and use your PC and see the pic.
Well here is the link
DSCN0751 pictures from friends & fun photos on webshots
some times when I open this posts, the pic I posted doesnt appears and other times it does; any way you can click in the square with the red X with a righ click in the mouse, then go to properties and copy and paste the URL and use your PC and see the pic.Well here is the link
DSCN0751 pictures from friends & fun photos on webshots