My previous oil cap was leaking so ireplaced, slapped the oil cap on shut the hood and drove came back home checked NO OIL, 3 days later... It was a mess i couldeven seebubbles on the side ofthe cap, dose that mean that i have a cracked valve cover....

thx

 

I am new to mb diesels, so I could be very wrong, but I think on my car this leaking oil cap problemmay haveto do with the combustion pressure leaking past the piston rings and creating a crankcase pressure. When I unhooked the breather tube and put my finger over the hole with the motor running, I could feel the air, when I pressed and plugged it, you would feel the pressure build up in just a few seconds. There was also oil in my turbo intake pipe and air filter housing. I don't know if this is normal, but my car is a 1984 300sd with 240k miles.

 

My car too is 1984 300SD with 278k mi i checked myairfilter housing and there is no trace of oil so that means itsgood(i guess)Yesterday i cleaned the oil stained area again and now its leaking towards the injector side (at lease it dose not leak toward the exhaust manifold), so i am thinking to replacingmy valve cover....

 

wait how did i waste money all i did is clean up the oil mess with atowel paper, i am going to do that asai get some bering greese...

 

so took out the valve cover and lay it on the table and its ok, o i decided to clean the entire valve cover and i took a close look @ the valve cover and found some deep scoring near the oil cap area i dont think they are deep enough but i am just concern...