Weird Sound at start up - 6SpeedOnline - Porsche Forum and Luxury Car Resource

Sep 19, 2007 | 06:16 AM

ritchieswimwear

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Weird Sound at start up

I thought I heard a strange sound from the engine at start up. It was like a dentist drill and lasted about 10 seconds. Any thoughts?

Sep 19, 2007 | 08:43 AM

WOODTSTER

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probably your air pump which sounds better than the
bucket of bolts sound we have also at idle.

MK

Sep 19, 2007 | 08:51 AM

Extremespeed

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I agree it's probably you air pump. It is a high pitched whisle that starts a few seconds after startup and goes away after about 10-15 seconds. It won't happen at every startup. And definatly will happen on a cold startup. If your wondering what it's for. It's an emissions device.