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I'm a relatively new 997 series 2 owner - 2011 model. The car seems to spit oil on start up and I have oil splatter on the garage floor and up the wall behind the car (I reverse into the garage). Its particularly out the left hand side exhaust.
Is this a normal 997 thing or is there something seriously wrong here?
I've just by chance bumped into a Porsche mechanic, he tells me that it's just carbon and water condensation cause when the cat is being warmed up on start up. Nothing to worry about it seems
Do you get heavier carbon buildup in your left exhaust tip vs the right? I do, but so far I seem to be the only one :/. Trying to pinpoint the reason for this- considering a bore scope...
That's not normal to puke out oil on startups through the exhaust pipes. My 2009 C4S back end is close to a white concrete wall, and I never see that. Sounds like the AOS is bad.
Do you get heavier carbon buildup in your left exhaust tip vs the right? I do, but so far I seem to be the only one :/. Trying to pinpoint the reason for this- considering a bore scope...
Yes I think there's more on the left side than right which aligns I guess with the marks on the wall
That's not normal to puke out oil on startups through the exhaust pipes. My 2009 C4S back end is close to a white concrete wall, and I never see that. Sounds like the AOS is bad.
My dealer only checked out the AOS a week ago when I complained about the amount of smoke the car blew at the time and it passed with a clean bill of health and everyone tells me that I'll always get some smoke on startup if I've parked on a slope (which I had)
My dealer only checked out the AOS a week ago when I complained about the amount of smoke the car blew at the time and it passed with a clean bill of health and everyone tells me that I'll always get some smoke on startup if I've parked on a slope (which I had)
This has been talked about before but I can't exactly recall the details. Actually, I sort of can but I don't want to risk "mis-remembering" and write something patently wrong. A user who goes by "Macster" typically provides good technical info. If you search on him and a few key words you might find some pertinent info. I do know he chimed in about oil smoke on start up (which my car does every so often) possibly not being a signal of a critical problem. Good luck.
I've just by chance bumped into a Porsche mechanic, he tells me that it's just carbon and water condensation cause when the cat is being warmed up on start up. Nothing to worry about it seems
most likely this ^^^^. DO NOT TAKE YOUR ENGINE APART
Do you get heavier carbon buildup in your left exhaust tip vs the right? I do, but so far I seem to be the only one :/. Trying to pinpoint the reason for this- considering a bore scope...
that was a main symptom of mine also. Blacked out drivers side tailpipe. I'd get it scoped for sure
that was a main symptom of mine also. Blacked out drivers side tailpipe. I'd get it scoped for sure
Yours is a 997.1 where that totally adds up. Mine and the OP's are 997.2s. The cylinder banks/exhaust cross over to the other side in 997.1, where in 997.2 they do not cross sides- so the left cylinder bank feeds the left exhaust.
IF you have one darker than the other and you have OIL coming out like I did where its using your wall as an art canvas then I'd get it scoped regardless how the piping is routed.
Guy's here's some photo's of behind the car in the garage.
I'm told this is just carbon being blown out of the exhaust on cold start-up.
Whilst it looks oily it doesn't feel that greasy actually. I was advised that this is condensation that occurs when the car starts up and is warming up the catalytic converter. Its then combining with the carbon to give a black looking spot. I'll get around to trying to clean it up this weekend. If it really is oil then it won't be coming out of the timber deck.
IF you have one darker than the other and you have OIL coming out like I did where its using your wall as an art canvas then I'd get it scoped regardless how the piping is routed.
ah- I could only see the taillights and presumed incorrectly :/
Anyway, like the original poster, mine is not oil. It's only carbon but builds up on the left tailpipe at 2x the rate of the right tailpipe. What can I say, I like symmetry
09-10-2017, 08:15 PM
Oil splatter out the exhaust on startup
