Noisy engine when cold

[Zaphod]

Hi all,

A couple of weeks ago I picked up an MY07 tuned by sti. I've noticed that when starting up from cold, it's *much* louder, for maybe 30 seconds, then suddenly quietens down. It sounds exactly like a lack of oil (or oil pressure) which some cars do at startup, only this goes on for much too long for that to be it. Is this a common thing with these engines, or do I have a problem?

Cheers,
Adam

[overl0ad]

there's a tiny air pump in there which only kicks in when engine doing a cold start

it's for emission purposes.

so the noise is normal and nothing to worry about.

i had the same query when i bought my car and had queried it.

hope this helps.

[Zaphod]

Ahhh, thanks a million! That's a load off my mind!

[Std08GTB]

If you listen closely with or without the bonnet open after 30 seconds or thereabouts you'll hear that pump stop with a little "phew" type sound and it will all be quiet again.

[boxerjunkie]

See if this helps, MRT Video
You will see Brett eventually talk about the air pump on the left hand side of the engine bay.