GT3RS

[GT3RSCO]

Do I have a problem? Every so often I have a puff of blue smoke at cold start up. I am on a level surface. Does not seem to matter if it has set for a few days or a few hours. I just turned 5000 miles, porsche dealer says its normal. Sometimes its worse more smoke) than other times. Any thoughts would be appreciated.

Thanks

[PAULSPEED]

Hi,

I would recommend you let it idle a little bit before you shut it down. After

a track run I run the cool down lap and head back to the pits. Once

in the pits I put the car in park. I then let it idle and remove my golves

and helmet. Once removed I shut the motor off. You do not need

to let it idle long.

Paul

[Qualified Pole]

It's perfectly normal. Horizontal cylinders don't allow the oil to drain down like a more vertical alignment does.

My wet sump 996s blew smoke on startup rarely, but my dry sump 996 GT3 did it randomly and my current 997 GT3 does it with slightly greater frequency. I had 21,000 miles on the 996 GT3 when I sold it and there was no problem. My 997-3 has about 3,800 miles on it and has smoked occasionally since new. I blew a nice 1/2 car-sized cloud yesterday on startup.

Don't worry, just enjoy.

[GT3RSCO]

Hi,

I would recommend you let it idle a little bit before you shut it down. After

a track run I run the cool down lap and head back to the pits. Once

in the pits I put the car in park. I then let it idle and remove my golves

and helmet. Once removed I shut the motor off. You do not need

to let it idle long.

Paul

Thanks for the info, I will try it.

[360bhp]

Hi - not an expert but can someone explain to me in simple layman language why the car blokes some smoke out to the exhaust on start up after the car has 'rested' for a while. I have the same thing on my 997 RS. Thanks in advance. :cheers:

[Qualified Pole]

can someone explain to me in simple layman language

Your car's pistons' rings move inside cylinders on a thin layer of oil.

Cut the bottom from 2 cans, spray the inside of the cans with an oil of your choice, then leave 1 can lying on its side, and put the other can vertically on a plate. Wait 4 hours and look inside both cans.

The one on the side is like your Porsche's cylinder with some engine oil pooled waiting for you to start up your engine and give you a little smoke show.

The one standing up vertically on the plate will be practically empty, with the fluid all down on the plate. Most motors' cylinders are angled toward the sky, so the oil drips down into the sump, or at least out of the combustion area, down past the rings through gaps in the rings such as these (see the red arrows on the picture of a piston, although the one I took a picture of is not from a P-car).

[360bhp]

excellent - thank you.

[Edge]

i have owned the Boxster S , the 997 C2S and while on the odd occassion they puffed the blue smoke on start up it was nothing compared to my GT3 . The OPC says its normal and i guess it must be but why is it more pronounced on the 3.6 GT3 engine?

[03-turbo911]

Some smoke and some don't. Mine has been pretty much smoke-free.