Mark Thornton

I was Driving my car and it started pouring smoke from the exhaust I removed the intake manifolds and found about a half pint of engine oil inside .. What could be the cause?? Need some help here folks. 1985 Porsche 928S

Ducman82

what year car? oil in the intake is a common enough issue (blow by etc), but i have never seen so much get in the intake that it smoked out the exhaust. i would pull the plugs and check them.

davek9

A little history will help on your '85, as I usually will find about a 1/2 fluid ounce per side a year (in the side plenums).

1/2 pint is excessive and exactly where was the oil located?

zekgb

Not sure if they fail all that often, but a missing or failed oil filler check valve would suck a crapload of oil into the intake.

Mark Thornton

Wow Where would I look for that ? I found oil in both plenums most of it was in the drivers side

zekgb

It's in the end of the hose that connects to the base of the oil filler neck.

ThetaTau87

Over filling the sump with oil and/or long left hand turns can allow the PCV vents on the top of the RH cam cover to suck oil into the intake in quantities large enough to create thick smoke out the exhaust and even stall the engine.

WallyP

Perhaps a more complete description of "I was Driving my car..." might give us some clues...

Daniel5691

Mark,
Any more updates?

Thanks

Speedtoys

To be clear, it has to be a bitchin hard and long left turn...

ThetaTau87

Exactly like Swamp turn at Waterford Hill.

Mark Thornton

OK I was driving it pretty hard..and making right turns.. also the engine temp went up to last mark before the red zone. I am presently waiting for the weather to cool down it is just too hot to try to work in 100 deg heat.