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Smoke at startup

1001emmo

By 1001emmo
in 986 Series (Boxster, Boxster S)

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1001emmo Member

1001emmo

Posted
Posted

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).

Joel

Beelzy Member

Beelzy

Posted
Posted

Normal for Flat Sixes, especially on the short trips.

It's the White-ish smoke that you worry about. (AOS)

Oh,....Welcome Aboard!

:renntech:

dr914jr Member

dr914jr

Posted
Posted

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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RFM Member

RFM

Posted
  • Moderators
Posted

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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