Question about 2007 Porsche Cayman Coupe

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It seems every time I start my car after it has sit for over an hour, it spits white smoke from the exhaust. If it has ran off and on all day, there is no white smoke. But if I let it sit, for instance overnight, the next morning, it will smoke. It isn't a large amount of smoke, and it goes away quick, but I know this shouldn't be happening. Any idea's on what to check out.

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  • shizat Oct 13, 2010

    One other thing I thought of:
    The car has a built in digital oil pressure gague and before you crank the engine, after turning the key on, it calibrates and measures the oil level. All of this seems fine according to the readouts. One possibility I have considered is this 'measuring' opens a valve or something that may be burning off the excess when I start it, especially if I crank it before the measurement is complete (but I have tried both ways). It could be too much oil (although the readout claims it is within tolerance).
    Also to note: Zero smoke this morning upon starting it, nor was there any smoke leaving work yesterday. Could it have been just a little too much oil? Is this just intermittent and will I probably see the issue again?
    Thanks folks for your answers. I guess to get down to it, my main focus here was to see if there were any known issues for this model of a similar nature, and if so was the known issue a major thing, or something more trivial.

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I have a similar symptom with my 2009 Cayman S. i.e white/light grey smoke for about 10 seconds after cold start up.This has occured three times in the last 200 miles, and is now (October 2011) being looked at again by a Sussex main dealer who as yet have to come to a conclusion or solution. My personal opinion is that it appears to be a leaking valve guide stem seal, but Porsche disagree or are at least sceptical of this. Still what do I know? I've only been in the motor trade for 45 years!

Posted on Oct 10, 2011

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If you live where its cold thats normal.alot of times this happens when there is to much oil in the motor.number two your heads are going bad the rings on the pistons are going out

Posted on Oct 12, 2010

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Time to trade it in quick for a new one ,this is a head gasket ?? and its water seeping into piston ,could be a manifold gasket ?? but its a big job and with dealer prices ?? trade it in quick

Posted on Oct 12, 2010

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