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What do make of a Boxster that smokes on startup. This only happens when I move the car a short distance (from garage to street) then when I start it up again it has a puff of blue smoke. If I drive the car a long distance (>10 miles) I have never noticed this smoke. BTW... at has 111K on it and it's a '99 (2.5L).


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I'd really suggest that if the car is smoking on startup or ever you may have an issue. On earlier air cooled engines all kinds of things could cause smoking. Everything from worn valve guides to oil on the heat exchangers. With a modern Porsche engine if you're seeing any smoke you've got a powerful indicator that you need to address an issue. The most common culprit would be the AOS but it could also be coolant leaking into the combustion chamber.

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It's rather typical for very short distance, garage to street, with a cold flat six engine, and certainly not recommended. I would wait with a AOS replacement till the engine blow some blueish smoke, on start up, during longer distances.

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