84-85 Trucks & 4Runners 2nd gen pickups and 1st gen 4Runners with solid front axles

Heavy oil leak? rear main?

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Old May 5, 2013 | 03:26 PM
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My valve cover checks out good i have leaks at the back. However i did notice that the more i ask the engine on the highway the quicker it loses oil and when i park i have a lot bigger puddle of oil.
Originally Posted by snobdds
I also don't think it's the rear main...

Since you just did your VC, I bet you somehow did not seat the rear main half moon seal right.

Reach around to the back of the head and see if there is any oil, I bet you will find some. I had the same thing happen to me once when I replaced the vlave cover when adjusting the valves. Did not tighten the VC bolts enough and it cause the half moon to leak. I just had to tighten the bolts on the VC more and it solved the problem...
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