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New Rear Main Seal Leaking - 5.2

Old Jun 11, 2012 | 09:53 PM
  #11  
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Originally Posted by HeyYou
Are you sure it isn't the pan gasket leaking?
I would believe anything at this point... lol...

The pan is in good shape.

I tried real hard to make sure it was all lined up when installing the gasket.

Should I have used RTV all the way around the "semi-circle" on the gasket?

Is that what your leak looked like?

BTW... I used a new pan gasket and rear main for the second repair. Also had access to a lift making the repair process a little easier.
 
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Old Jun 11, 2012 | 09:59 PM
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Are you 100% sure that the oil is NOT coming from the back of one of the valve covers? The bolts are prone to loosening themselves.
 
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Old Jun 11, 2012 | 10:00 PM
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I would expect the rear main to run down the INSIDE of the inspection plate..... not the outside.... Of course, I would expect the pan to do the same...... there really aren't any other options right there though, gotta be one or the other.

If you got the good rubber gasket, should only need a bit of sealer at the corner between the gasket and block/timing cover.
 
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Old Jun 11, 2012 | 10:02 PM
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Originally Posted by dhvaughan
the Service Manual and the Haynes manual are both the same, calling for a couple of drops of anaerobic sealant on the face of the flange.
http://www.permatex.com/products/Aut...ket_makers.htm

I don't see why a very very very thin coat of rtv on the flange face wouldn't work, but i just did as it said.

Did you put anything on the machined flange surfaces?
I put some grey RTV... maybe a little too much or maybe I ran the engine too quick after the install.

In your best guess... the way the dust cover is clean right below the rear main... would you think it is still leaking in that area? Is that what your leak looked like?

I did the plenum many years ago and used RTV instead of gaskets. I would think that if that was the source the dust cover would not look like that.

I am lost.... and I work in the industry if that isn't even more pathetic... lol.
 
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Old Jun 11, 2012 | 10:04 PM
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Clean everything off nice, toss a bit of UV dye into the oil, drive it for a few days, and see if there really is a leak. If there is, pull the starter, and inspection plate, and see exactly where it is coming from.
 
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Old Jun 11, 2012 | 10:10 PM
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Originally Posted by gdstock
Are you 100% sure that the oil is NOT coming from the back of one of the valve covers? The bolts are prone to loosening themselves.
I am not 100% sure.

I installed HS rockers many years ago.

I have to get in there and feel around with my fingers to check for a leak.
 
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Old Jun 11, 2012 | 10:11 PM
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Originally Posted by HeyYou
Clean everything off nice, toss a bit of UV dye into the oil, drive it for a few days, and see if there really is a leak. If there is, pull the starter, and inspection plate, and see exactly where it is coming from.
Was thinking about goin that route... throwing dye in that sucker.
 
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Old Jun 11, 2012 | 10:12 PM
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Originally Posted by DPR250R
I am not 100% sure.

I installed HS rockers many years ago.

I have to get in there and feel around with my fingers to check for a leak.

I would check around the bottom of valve covers. I fthe area is not clean, I would pull covers, check gaskets (note if bolts are loose) clean and replace covers. SOmetimes it is the easy thing we may tend to overlook. Wouldn't that be a kick in the pants!
 
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Old Jun 11, 2012 | 10:34 PM
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mine leaked into the bell housing and ran down the back side of the cover, not the front side. my front side was dry.
 
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Old Jun 11, 2012 | 11:15 PM
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Ok... thanks guys for the feedback... I appreciate it.
 
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