Hello all.

I took my fuel distributor out to gain access to the engine mount bolt. Took a peak inside the throttle body and noticed inside the manifold an accumulation of what appears to be engine oil. See attached.

Is this right? If not, how is engine oil getting in there?


Thanks,
jav

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No clue as to the car you have. But cars with a PVC valve that fails can cause this. It the breather tube form the valve covers to the intake. Cars that have a PCV valve can pull in a little oil and the valve wears out. I have seen cases where so much oil is pulled in that it just sits at the bottom of the intake as a pool.

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1991 560 SEL / 185k miles
1992 750il / 17k miles - project car

Sorry, I have a 1991 Mercedes 190e 2.6. Does the PCV valve applies?

Most all mb engines do that, dont worry about it!

You maybe right. It just looks and feel weird. I may just end up cleaning it out. One MB owner thinks it's a PCV valve issue which I'll also check and probably replace.

This happens to most M103 engines.
Just clean it out.
There is no "PCV" valve per se. In the valve cover there is an "oil trap". There is an outlet from the manifold to the oil trap with a very small opening. There should be just enough vacuum to suck any fumes rising up from the crank case which are then captured in the oil trap and returned to the valve train area as oil.

Over time seepage will occur back into the manifolds and gather underneath the throttle valve.

Thanks for the suggestion. I'll do just that, clean it out.

Thanks for everyone's input. I feel much better now

It to like mine only occur when using reverse.I smell oil only is reverse when backing fast.

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1999 w140, quit voting to old, and to old to fight, a god damned veteran, deutschland deutschland uber alles uber alles in der welt