Oil in air filter

[Oreo]

Hi All

My 92 2 litre 102 enigne is being plaqued with oil going into the air filter. The oil is coming from the cam cover and coats the CIS plate. I checked all the hoses, cleaned the little metering hole, cleaned the oil vapor separator in the cam cover (everything was already clean actually). In the end, I put a little foam sponge in the air filter where there's a little box for the blowby. I wonder if there is supposed to be a filter for it in there?

I can't seem to produce any significant blowby when I rev the engine either so I'm stumped. I read the the 102 engine is prone to oil vapor in the filter. Is there a solution to this eg an upgrade oil vapor sperator? higher viscosity (5W-40 now)?

BTW, how does the PCV system with the metering hole work?

Regards
Oreo

[MTI]

Actually the M102 is known for having valve seals that dry and crack, allowing the space under the valve cover to become pressurized, with oil being driven into the air filter housing. Have the seals checked.

[Oreo]

Hi MTI

Thanks for the tip. How do I go about checking the seals? Intake or exhaust?

Regards
Oreo

[ozzy]

Does it blow a puff of blue smoke when you first start it in the morning??
you may need someone to watch the tail pipe when you start it.