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fresh rebuilt 4.3 leaking oil

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Old May 19, 2014 | 07:43 PM
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Default fresh rebuilt 4.3 leaking oil

so
I used super duty Fel-Pro gaskets on our rebuild and its leaking oil.
I'm told it's because we ran the A/C before the engine got broke it.
can anyone confirm that?
looks like leaking from where the front of the oil pan mounts up to the bottom of the timing cover (new)
 
Old May 19, 2014 | 09:14 PM
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I don't really know why you was told that as the ac shouldn't have any affect - but i'll almost bet you read the instructions with the gasgets and put them in dry no RTV - always add RTV to the corners at least a inch or two back on the gasket and the half moon on the main rear bearing and the timing cover - don't ask me why I know
 
Old May 20, 2014 | 07:55 AM
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That is a pretty common place for them to leak if you put the gasket in dry, seen it many times on here.
like odat said, putting them in dry usually does not work, some people get lucky.
Use some rtv and you will be good.

As for running the AC, who ever told you that, either find a new mechanic, or if its a friend, lightly and friendly hit them.. with a shovel.
 
Old May 21, 2014 | 08:23 PM
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Originally Posted by richphotos
That is a pretty common place for them to leak if you put the gasket in dry, seen it many times on here.
like odat said, putting them in dry usually does not work, some people get lucky.
Use some rtv and you will be good.

As for running the AC, who ever told you that, either find a new mechanic, or if its a friend, lightly and friendly hit them.. with a shovel.
Yeah that!! Sounds like that person is an idiot & never should talk.....lol ultra black rtv !!!: alway use this stuff unless it's a head gasket or a rubber gasket!!!!!& of course never ever on 1 piece seals no worries pretty safe to say we have all been there!!!
 
Old May 23, 2014 | 06:20 PM
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Default use GM timing cover

I had my motor rebuilt 2yrs ago had the same leak from the timing cover, they tried to save a buck by using aftermarket timing covers twice, two different brands . they finally used a Gm timing cover, you could see that the gasket seal was a large bead of some type of sealant. no more leak
 

Last edited by TAZ454; May 23, 2014 at 06:26 PM.
Old May 27, 2014 | 12:51 PM
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OH yea, now I remember why I didn't wanna wrench for a living!
done. again.
but a certain transmission bolt got thrown away yea

odat, my wife laughed at me when I read your post, I should have known
Taz, yea I read about aftermarket timing covers in time
and to avoid crappy intake gaskets

I called Federal Mogul tech. they need to fix their directions.
He said yea they dont want people putting RTV all over the place but yea you gotta put some in the corners
 
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