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White smoke on idle please help!

christopherhinves

PCGB Member
Member
Earlier in the year my mechanic overfilled the car with oil. Since then Precision Porsche have cleaned out the engine, finding a couple of oil leaks which they have fixed. Ending was removed, cleaned when that was done. They also cleaned out the air filter. when the car overfilled, the car started to smoke white smoke. Got the car back a few months ago, fine and no smoke for the first two journeys. Have since taken the car out 2 or 3 times and white smoke has started to show again on start up for a couple of minutes. It then goes but when the car is hot at idle, after a minute of sitting it starts to smoke white smoke. No smoke when driving.
The car has cov red 88k miles and only 20k since last Porsche engine rebuild by Porsche before I bought it.
Any help or ideas of what it could be would be really appreciated.
 
Sounds like burning off oil.

You said that they had overfilled it?

Also, it might be somewhere else where the oil is leaking from.
 
Porsche have adjusted the oil level and cleaned out air filter when it was overfilled . Oil level is mid point . I checked this after an hour run Saturday . Porsche took the engine out and jet sprayed it and fixed the leaks. very strange don't really know what else it could be .Are there door between the exhaust and can covers . Could one of them be loose , allowing oil through to the exhaust? Thanks guys .
 
I agree with Geoff too that there could be oil passing through the breather when crankcase pressure has lowered (idling). Also, the rubber airbox (after the mass air flow meter) and throttle body - have they been removed and cleaned out? The idle speed valve too - has that been properly cleaned out of thick oil deposits?
 
Sorry to bump this, I’m a similar situation bought the car and then realised it was well over on the oil, had it all changed over and leveled out, had 2 specialists look it over both say nothing obvious is standing out for them over than it will take a while for oil to burn off.

any idea how long this would take? Or took you?

edit: mines a cayman but this is the only post I’ve found which sounds like a similar situation to mine
 
You might get an answer or two if you start a thread on this topic in the Cayman section rather than here.
 

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