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White Smoke on Start Up

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boardingnath997

Monza
Joined
28 Sep 2016
Messages
160
Evening all, past 2 days I have had white smoke on start up. I've only noticed it happening on the way home from work after the car has been sitting there for 8-9 hours. I haven't noticed in the morning but I haven't been looking for it.

It's a 997.2 S, I haven't recently added oil so it can't be overfill. It does tend to use a bit of oil, usually 800mls per 1000miles.

FWIW, I do have Porsche warranty.

How worried should I be :eek:
 
boardingnath997 said:
Evening all, past 2 days I have had white smoke on start up. I've only noticed it happening on the way home from work after the car has been sitting there for 8-9 hours. I haven't noticed in the morning but I haven't been looking for it.

It's a 997.2 S, I haven't recently added oil so it can't be overfill. It does tend to use a bit of oil, usually 800mls per 1000miles.

FWIW, I do have Porsche warranty.

How worried should I be :eek:
Click to expand...
If you have Porsche warranty, is be cool as a cucumber. Out of curiosity do you park on a decent of any kind?
 
Flat on both occasions and park in the same spot all the time.

I know if anything goes wrong I'll be covered but it still worries me that something has changed as I've not had this problem before.
 
From memory, people often comment it is a failing air/oil separator. Off to OPC for you.
 
boardingnath997 said:
Evening all, past 2 days I have had white smoke on start up. I've only noticed it happening on the way home from work after the car has been sitting there for 8-9 hours. I haven't noticed in the morning but I haven't been looking for it.

It's a 997.2 S, I haven't recently added oil so it can't be overfill. It does tend to use a bit of oil, usually 800mls per 1000miles.

FWIW, I do have Porsche warranty.

How worried should I be :eek:
Click to expand...

I would not be concerned as long as it does not blow smoke on every or most startups, particularly if it only persists for a few seconds. Due to the engine geometry, most boxer motors blow smoke at startup occasionally due to minor amounts of oil bypassing the rings and/or the valve stem seals if a valve is open at the time into the combustion chamber(s).

If it smokes frequently and/or persists, a dodgy AOS is the most likely cause.
 
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