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73-87 Chevy _ GMC Trucks => Engine/Drivetrain => Topic started by: TxFiddler on May 19, 2010, 03:11:13 pm
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In my 80 C10 with 350, what would cause oil to "pool" on the intake? It's pooling right where on of the bolts from the a/c bracket bolts to it and also right where one of the intake manifold bolts are. Here's a pic. Thanks.
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Manifold gasket leak at that bolt.....
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Rocker cover gasket possibly
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Can a quick fix be to pull the bolt and put some right stuff around it to temporarily seal or do i need to just pull the intake and re-seal the whole thing?
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Rocker cover gasket possibly
I would do that first more likely
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Those center four bolts (two on each side of carb) must have some sort of thread sealer on them. Otherwise, you will get puddles. Also check the VC gaskets as others have suggested (if they are old go ahead and replace them - it's easy). I wouldn't mess with a intake gasket replacement unless you have evidence that it's bad.
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Put some of this on the bolt threads. The bolt holes pass into the intake valley
http://www.permatex.com/products/Automotive/thread_compounds/a_thread_sealants/auto_Permatex_High_Temperature_Thread_Sealant.htm
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Could just drill a hole in the manifold to let the oil drain back in.......Just kidding.
You can wipe it all clean, drive it for awhile and then trace where the oil is coming from. How long did it take for it to puddle up that much?
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Thanks a bunch everyone. I did clean it off, put some right stuff on where the a/c bracket meets the manifold, then put some high temp thread locker on the 2 bolts that hold the a/c bracket on. Haven't driven since. Will post results tomorrow. Thanks again, everyone.
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It's not the ac bracket bolts that need the sealant. It's the nearby manifold bolts.
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As many times as i v taken my intake off I never had it leak there just at the ends were your supposed to put that rubber gasket at.
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I had one leaking like that, this is probably wrong, but I pulled it out, wrapped it with teflon tape and retightened it. No more leak.
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Well, after 2 days, no more pooling. It must have been one of the bolts holding the a/c bracket. I didn't mess with any of the intake bolts (hard to get to with carb on). The tread locker and right stuff on the 2 bracket bolts seemed to have fixed the problem. Thanks again for all the suggestions. I will need help again, I'm sure. Have a great weekend everybody.