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So as most of you know, some of our 997s end up with the dreaded bore scoring. I took it upon myself to do some scoping and investigate some of the symptoms I have been experiencing. So I have owned the car for 2 years now and runs great. Now keep in mind before I did this test I was parked on a hill overnight and some oil leaked into the cylinder which I think is pretty normal, in one of the photos you can see the oil resting on the bottom of the cylinder wall. The question is, there is no super obvious scoring. There is a lot of carbon build up. Could this be a faulty oil separator?
eats about 1qt roughly every 2k miles
never smokes unless parked for a couple nights on a hill
sooty driver side tips
its quiet, no tapping, runs smooth
visible carbon buildup on top of pistons
heavy carbon on valves visible when rotating the motor around
