I must be cursed!!

[Blondie]

...I'm cursed with this car of all things black magic and Murphy's Law.

I think I've had just abt every common 944 problem happen to me with this car.

Including syphoning oil through the crankcase vent tubes. (though when I asked my parts supplier abt that he gave me a look like I had a third eye on my forehead.)

So how can I stop this oil from ending up in my intake? I sealed the oil filler-to-block ports and it did help, but Im still finding small pools of oil in the throttle body. Seems after too much cranking and not enuff starting, the motor will basically choke itself with its own oil. Instead of drawing in air, its drawing oil thats sitting inside the intake manifold.

The only cure I've found is to take the intake manifold off, literally dump the oil its filled with into a bucket, and put it back on.

This is a rediculous problem that I've ignored for far too long. I'd really welcome solutions from my fellow pelicanites who've had this problem before! Honestly, I never know who else to turn to when it comes to bizarre things like this

[Tidybuoy]

I'm not an expert regarding the oil problem but you mention "Seems after too much cranking and not enuff starting" and I'm wondering how many cranks it's taking to start the engine.

I bring this up because I recently had a problem of it taking very long to start the engine, 10-20 cranks before starting. It ended up being either the Fuel Pressure Regulator, Damper, or Fuel Pump Check Valve (not sure which because I change all of them). This cured the long cranking situation as when these go bad, it takes several engine cranks to build up fuel pressure which leaked down due to a defective component.

My car now starts in about 2 engine turns.

Vern

[Blondie]

Shoot man I wanna agree but I brought my car into a Porsche shop and the team did a full diagnostic. Fuel pressure and all electronic inputs/outputs checked out %100.

[Razorback1980]

There are a couple problems that would cause this. First is bad rings in the cylinders. If your compression and leak down numbers look good, then that's probably not it. The other thing that causes this is leaking o-rings on the oil/air separator. If they are leaking, the oil will go through that tube into the intake. Replace them and all should be good.

[Blondie]

Compression numbers look decent (175psi). Leaking o-rings taken care of a few months back. Could a blocked ventilation somewhere cause oil to be brought up?

[badjones]

Hey there. Apart from excess blowby from worn or broken rings which is ruled out by the compression test then any form of air leak into the crancase from the oil air seperator or maybe the dipstick tube rubber could increase the amount of oil transferred to the intake manifold during running. the engine when running should be at a partial vacuum and air getting in reduces the vacuum by allowing air flow and increasing the chances of oil mist being carried into the intake. Oil level too high can cause too much oil mist from the crank physically agitating the oil, and any fuel leaking into the crankcase can dilute the oil resulting in more oil/fuel being carried thru to the manifold. Good luck

[Razorback1980]

I think badjones has it covered pretty well. I'm trying to think of where else the crankcase could leak and the oil cap o ring would be the only other place I can think of. Check the o ring on the filler cap and see what you find.

[Blondie]

Thanks alot for the info badjones, and of course Tom lol a pleasure as always. I'll inspect the whole ventilation system thoroughly tomorrow and hopefully this thread can serve as a decent source of info for anyone else who might have this problem.