Quote:
Originally Posted by TroutMD
Well, the burned oil smell persists so it must likely be a valve leak then. I don't see any dripping oil making it to the floor of my garage though.
I am not very mechanically inclined, how can I confirm it is a valve leak? And how difficult/costly would it be to fix? Thanks again.
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The valve covers are your most likely source of leaks. On the M117 they're right above the exhaust manifold, so if you have any oil weeping out, it's gonna drip down, burn and smell terrible.
The easiest way to look is to use a strong light and a mirror and look along the lower edge of the valve covers to look for evidence of oil. If you see oil, a "sweat" or a bunch of caked up dirt and grime, you've probably found your issue. If so, replacing the valve cover gaskets isn't difficult or expensive.