GT86Bob 61 Report post Posted February 4, 2017 You're probably going to ask for a video but let's try without one.... it's late and I'm lazy... My car has done about 22,000 miles. On a cold day when I can more clearly see the exhaust smoke in my mirrors, it seems to me I'm producing more than other cars in the traffic jam I'm always in. I don't notice anything when I'm moving quickly just when i'm idling. Is this common for the flat four or is it something to worry about or do you need a video? Bob Share this post Link to post Share on other sites
HariboPenguin 116 Report post Posted February 4, 2017 I can't comment on the stock exhaust system as I had mine changed in the summer so never experienced cold days with it. But I have noticed mine does produce quite a bit compared to other cars in the recent cold spell too until the engine is up to normal operating temp. I've just put it down our cars having bigger exhaust piping / exits and aren't angled downwards or hidden under bumpers like most cars on the road. (Not sure if this is actually correct as my mechanical knowledge is pretty limited). I think mine might be a bit more prominent too as I've removed the 2nd cat. Cold starts on icy mornings produce quite a big cloud I don't think its anything to worry about, mine went in for MOT at RRG today and passed with flying colours. Share this post Link to post Share on other sites
Andrew Smith 156 Report post Posted February 4, 2017 Sounds quite normal to me. I think you are probably seeing moisture from inside the exhaust evaporating off. Share this post Link to post Share on other sites
Lauren 2259 Report post Posted February 4, 2017 Sounds totally normal. Share this post Link to post Share on other sites
Mark-in-Stoke 488 Report post Posted February 5, 2017 Yup, normal. Share this post Link to post Share on other sites
gazza82 41 Report post Posted February 5, 2017 Andrew Smith has it in a nutshell. It's water vapour not smoke. 1 KevinA reacted to this Share this post Link to post Share on other sites
Igi 28 Report post Posted February 5, 2017 Thought I'd chime in with this, I've been checking my coolant and oil constantly and vigilantly and nothing seems to be escaping however it seems like the GT is steam engined rather than anything else because even after bringing it to operating temperature and driving a couple of miles it still releases visible vapours 'round the back! I just put it down to it being a flat four and a sports exhaust system... Share this post Link to post Share on other sites
Rich 378 Report post Posted February 5, 2017 Checked fuel consumption? If it's overfuelling you'd end up with excess steam from the catalytic converter. Share this post Link to post Share on other sites
Andrew Smith 156 Report post Posted February 5, 2017 Exhaust system will take more than a couple of miles to warm up properly. Go for a good long drive and then check it, should be clear then. Share this post Link to post Share on other sites
GT86Bob 61 Report post Posted February 5, 2017 Thanks All. That's very reassuring. Bob 1 Andrew Smith reacted to this Share this post Link to post Share on other sites
Igi 28 Report post Posted February 5, 2017 Fuel consumption hangs around 29mpg which isn't anything out of ordinary, checked upon coming back home just now and after around 10miles it was still breathing out some vapour but definitely considerably less than before, I shall give it a drive around next weekend and see what's going on then, the exhaust tip seems clean however...😁 (Indicating a lack of rich mixture) Share this post Link to post Share on other sites
Nicebiscuit 655 Report post Posted February 5, 2017 Mines like a steam engine in the cold weather. Particularly alarming if you have to reverse through it... But seems perfectly healthy. Sent from my iPhone using Tapatalk Share this post Link to post Share on other sites
Deacon 1357 Report post Posted February 6, 2017 Part of it's just the same process as when you blow out of your mouth on a cold day - the hot gas hits the cold air and forms steam. Share this post Link to post Share on other sites
Keethos 842 Report post Posted February 6, 2017 Considering it's a high strung engine, it's guna run a lil hotter than most other cars, plus the bigger exhaust pipes mean more of it will pour out. So it's shouldn't really be, how much smoke your car gives off compared to other cars, it'll have to be compared to other sports cars with big exhausts etc. 1 Igi reacted to this Share this post Link to post Share on other sites
Igi 28 Report post Posted February 6, 2017 Ok it does sound a little more logical when you put it this way, having had a BMW Mini Cooper before - any smoke from the exhaust or anywhere from the car in that matter just sounds like money to be spent to me 😂 1 Keethos reacted to this Share this post Link to post Share on other sites
