Porsche-Suchtig

The video captures it perfectly. But I apparently have the extra smoke option. Does it virtually every time, no matter what.

I also don't buy the break-in theory.

Whatever it is, it seems to be unimportant. Just another added feature to the GT line of cars. And it sounds like Porsche has been successful in producing even more start-up smoke from 991 GT3s than prior GT3s.

scb997

I'm over 9,000 miles. So, what's that? about 450 starts? About 1 in 10 times I see smoke/steam on start-up. When it does, it's a little/lot more than that video. I seem to be on a pace of adding 1/2 quart every 4,500 miles (I just added the second 1/2 quart). So, I'm not burning any appreciable amount of oil.

I used to think it depended on how long it had been since I'd driven it, whether it really got fully warmed up, etc. I don't believe that anymore. My conclusion? It's completely random.

Scott

hf1

Have owned two Porsche boxer engines (Boxster S from new to 40k miles and now a 996 GT3 from 6k to now 10k miles). Both driven purely for joy, mostly weekends, on country roads or track -- almost never in traffic or in cities. Stored winters. Every drive/run rpms kept under 3k until warmed up then taken near redline at least a few times during the drive. Both Boxster and GT3 were broken in by the book.

Never seen smoke, never had to add oil, or had any problems for that matter. (Hope I didn't just jinx myself )

Anecdotal evidence from polling Porsche owners hints that Porsches want to be regularly pushed (their legs stretched) to stay in shape.

bronson7

Can't say I've had any experience with a GT3, this one coming will be my first. I've had a Boxster S and a 911 C4S and neither one of them smoked at start up. I bought both new, drove basically as weekend cars and stored for the winters. I guess there's really no rhyme or reason as to why some smoke more than others.

UAEGT3

I totally agree with you. It has nothing to do with break in or how many miles is on the car. Its totally random. My car might smoke today then nothing for a week then smoke up for the next 3 start ups. Its a known issue "feature" "cool factor" u name it that comes with the flat design of the engine. U could have 50K miles and it would still do it or not.

RCMA991

Almost every time

Strimdog

Mine does it after its been sitting for a few days. I generally drive my car on the weekends with a rare weekday in the mix. First start of the week is a white cloud. After that, rest of weekend is good. Doesn't seem to be an issue. Though my neighbor, who now owns a Z06, saw me start it the other day and came over with a grin on his face asking what that was all about. I smiled and told him I had to pay extra for that feature.

texas_maverick

Yes, tons for me.

Just in time

After smoking like an industrial stack every time I started her my 3 today decided on a no smoke day. Go figure.

STG

Same for us!

Porsche-Suchtig

^LOL.

P.S. Smoky didn't smoke yesterday. Weird.

Haku

I am no tech and the following comment may just be a puff of smoke but here it is anyway.

In my case, smoke on startup or not depends on how the engine was switched off after its last drive. After a drive I let it idle (cool down) for a minute then switch off. The next startup, regardless of how long it's been sitting, is smoke free. It's been the case every time. Maybe someone here can explain the tech reasons for that.

bronson7

Interesting, maybe more should try this and report back. Thank you Haku

911dev

My .2 3 was like this as well. After any hard runs, I'd do 2-3 miles cool down. I would sometimes include (dependent on oil temp) a raised idle for several minutes in the garage as the manual suggests. I had some smokey starts but there were few. I believe it may be a mix of so many variables, extended times between drives, temp of engine when shut down, even possibly the configuration of the pistons post shut down... Whatever the reason(s), it is normal and not cause for concern.

I believe the oil temp., engine temp., combined (as you indicate above) as the largest reasons and likely due to to expansion when hot and contraction from proper cool down, etc...

My 991 should arrive mid Feb., so I guess I'll find out with this flavor.

Porsche-Suchtig

FWIW, mine has decided to stop smoking. I've done nothing different. Let it warm up, drive the **** out of it, let it cool down.

The only difference, as far as I can tell, is that the car now has about 350 miles on the odo. So, perhaps it was a break in thing. Or, perhaps it's just totally random.