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Old 03-05-2013, 02:29 AM
65BLUBIRD 65BLUBIRD is offline
 
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oil leak off intake manifold on 390

I replaced the valve cover gaskets and these are not leaking. Took some rags and cleaned up all around the engine as best as I could. Ran the engine for about 10 minutes and then started feeling around. The engine is wet at the back just under the intake manifold. This seems like a fairly common failure. Mine is not leaking too bad but enough to bother me. From what I have read this is a fairly common failure. I've checked the manual, some other posts and some videos on it and seems pretty straight forward. What I have seen suggested is to use silicone over the cork gasket. Agree, disagree? Any other tips on this job? Looks like about a whole day, maybe more? If I decide to go forward, any thing else to fix or change out? When I pulled the valve covers the rocker arms and such were remarkably clean.
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