I read a recent post about oil collecting in the air filter housing and leaking out on/around the engine.
I have an 87 911 turbo that I just rebuilt the engine on. Full rebuild, reconditioned RUF 3.4 L pistons and cylinders, full head work. The engine runs great and had no leaks untill I took it to a DE. At the end of the first session I noticed a leak on the front right side of the engine near the oil cooler. I traced the leak to the air cleaner housing! There was a pool of oil inside of the housing upstream of the air cleaner. See arrow on photo.
The oil level in the tank was below the halfway mark on the dipstick.
How is this oil getting in the air filter housing?
Could this be a result of valve or piston blow by?
What should I check?
I'm going to do a compression and leakdown test as soon as possible. I've been driving the car on the street without any problems??
Thanks for any help.
Victor Toce