Little Smoke at start up

[valfam]

I noticed last night when I first start the car I think after it's been sitting for a few days I get a puff of smoke. I have not noticed it while I drive just at start up. as you can guess it has me a little worried. What do you think it could be?

Thanks

[bBunny]

Sounds normal for these cars. Remember, you have a horizontal 6 cylnder car . Oil can pass between the rings on the pistons when the car is left cold for a period of time . Cold things contract including metals. A drop of oil ignited makes an amazing amount of smoke.

Most of my 911's have exhibited this behavior at some point.

[valfam]

Oh really, well thats good to know that really scared me. if I drive it every day it should not happen everytime I start it right? I really enjoy the car. I need to spend a few $1000 to get it 100% it's such a blast to drive.

[JFP in PA]

An occasional puff is a normal "feature" of the flat six engine design. However, if it happens all the time, it could be the start of the AOS going out.

[valfam]

An occasional puff is a normal "feature" of the flat six engine design. However, if it happens all the time, it could be the start of the AOS going out.

Thanks. I was thinking (hoping) that was it. I once read on here that if I see smoke driving on the highway to check the AOS. That's funny "feature", Microsoft used to call some of the issues we found a "undocumented feature" that's funny.

thank you very much for the feed back.

[Rapewta]

I think bBunny explained it.

I remember back in 1984, I was waiting for the bus in front of a Porsche dealership on the weeekend and

a car transport pulled in and off-loaded a half dozen new 84 Carrera's.

Everyone of them smoked on start-up.

They all had window stickers that were for 31,000.

A few days later, I was at the same place and noticed they all were out for display with $34,000 stickers.

Weird.

[valfam]

_{I think bBunny explained it.}

_{I remember back in 1984, I was waiting for the bus in front of a Porsche dealership on the weeekend and}

_{a car transport pulled in and off-loaded a half dozen new 84 Carrera's.}

_{Everyone of them smoked on start-up.}

_{They all had window stickers that were for 31,000.}

_{A few days later, I was at the same place and noticed they all were out for display with $34,000 stickers.}

_Weird.

_{Inflation I guess.}

[Skootnasty]

I think bBunny explained it.

I remember back in 1984, I was waiting for the bus in front of a Porsche dealership on the weeekend and

a car transport pulled in and off-loaded a half dozen new 84 Carrera's.

Everyone of them smoked on start-up.

They all had window stickers that were for 31,000.

A few days later, I was at the same place and noticed they all were out for display with $34,000 stickers.

Weird.

Dealer installed options

[dad2n2]

i noticed the same thing last month, i checked my oil and was half full on the electronic meter. i added some additional oil and i have not experienced the puff again.

[valfam]

My friend with the 99 996 told me a few days ago he saw the same puff of smoke after he had the car parked for a week or so. I guess it a normal feature as JFP put it.