White smoke during winter - Toyota GR86, 86, FR-S and Subaru BRZ Forum & Owners Community

alone1i · 07-27-2020, 01:13 AM

Heya, I have noticed there is white smoke coming from exhaust while I start my car. Here in New Zealand it is winter and temperature is around around 11 degree Celsius. I have noticed even after driving 20KM, when I stop completely, still some white smoke is coming. Even later in the day, when temperature is littlebit up, still I can see very light white smoke.
Is it normal for winter?

humfrz · 07-27-2020, 02:15 AM

Quote:

Originally Posted by alone1i

Heya, I have noticed there is white smoke coming from exhaust while I start my car. Here in New Zealand it is winter and temperature is around around 11 degree Celsius. I have noticed even after driving 20KM, when I stop completely, still some white smoke is coming. Even later in the day, when temperature is littlebit up, still I can see very light white smoke.
Is it normal for winter?

Most likely you are just seeing the products of combustion, plus a bit of water vapor - not to worry.

DarkPira7e · 07-27-2020, 06:04 AM

If anyone here has experienced many seasons, it's @humfrz , you can trust him. The white smoke is definitely just a byproduct of evaporation

Sasquachulator · 07-27-2020, 11:58 AM

IF its white like a cloud, and smells like...typical exhaust fumes then theres nothing wrong. Winter tends to show off the exhaust fumes more prominently.
You can even look at other cars around, they exhausts fumes would look all the same regardless of car.

If its white and kind of bluish...and smells like a weird burnt product...you got a coolant leak somewhere.

JD001 · 07-27-2020, 02:02 PM

Quote:

Originally Posted by DarkPira7e

If anyone here has experienced many seasons, it's @humfrz , you can trust him. The white smoke is definitely just a byproduct of evaporation

That's why he wears a WWII heavy duty mask.. no messing with white smoke!! I remember the first and last time I inhaled white smoke I was out for the night!!

humfrz · 07-27-2020, 02:39 PM

Quote:

Originally Posted by DarkPira7e

If anyone here has experienced many seasons, it's @humfrz , you can trust him. The white smoke is definitely just a byproduct of evaporation

Yep, it was many ah moons ago, one cold fall day, that I noticed the white smoke coming from the exhaust of my machine.

humfrz · 07-27-2020, 02:44 PM

Quote:

Originally Posted by JD001

That's why he wears a WWII heavy duty mask.. no messing with white smoke!! I remember the first and last time I inhaled white smoke I was out for the night!!

Ya and your buddies said - "take a deep breath and hold it" - and that's the last thing you remember -

Tcoat · 07-27-2020, 03:09 PM

Quote:

Originally Posted by humfrz

Ya and your buddies said - "take a deep breath and hold it" - and that's the last thing you remember -

humfrz · 07-27-2020, 03:35 PM

Quote:

Originally Posted by Tcoat

Another type of "supercharger" -

alone1i · 07-27-2020, 03:59 PM

Thank you

ToySub1946 · 07-27-2020, 04:46 PM

Simply worded differently from others above....

FIRST OF ALL...51 degrees f is certainly not very cold...yet the air must be moist.

I don't really understand science....yet from experience I know this:

When you turn off a warm/hot engine on a cool day, the exhaust system is of course also hot.

The hot exhaust system for some reason sucks in the damp air after the engine is turned off.

That air/water vapor takes a nap inside the entire exhaust system until that system is warmed up again, upon engine start.

You'll then see what may appear like grey exhaust...seemingly oil burning, yet it's simply white smoke from water now escaping the exhaust.

Best to not look at your exhaust, just simply drive off.

07-27-2020, 01:13 AM	#1
alone1i Not pro yet Join Date: Jul 2019 Drives: 2020 Toyota GT86 Location: Auckland, New Zealand Posts: 139 Thanks: 555 Thanked 53 Times in 32 Posts Mentioned: 1 Post(s) Tagged: 0 Thread(s)	White smoke during winter Heya, I have noticed there is white smoke coming from exhaust while I start my car. Here in New Zealand it is winter and temperature is around around 11 degree Celsius. I have noticed even after driving 20KM, when I stop completely, still some white smoke is coming. Even later in the day, when temperature is littlebit up, still I can see very light white smoke. Is it normal for winter?

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07-27-2020, 06:04 AM	#3
DarkPira7e Rust bucket enthusiast Join Date: Feb 2017 Drives: 2013 Turbo Firestorm FRS Location: Vermont Posts: 3,932 Thanks: 3,199 Thanked 4,095 Times in 2,045 Posts Mentioned: 31 Post(s) Tagged: 0 Thread(s)	If anyone here has experienced many seasons, it's @humfrz , you can trust him. The white smoke is definitely just a byproduct of evaporation

07-27-2020, 11:58 AM	#4
Sasquachulator Pavement Grey Join Date: Dec 2011 Drives: 2020 Toyota 86 GT, 2017 BMW X1 Location: Calgary Posts: 3,083 Thanks: 109 Thanked 2,222 Times in 1,204 Posts Mentioned: 8 Post(s) Tagged: 0 Thread(s)	IF its white like a cloud, and smells like...typical exhaust fumes then theres nothing wrong. Winter tends to show off the exhaust fumes more prominently. You can even look at other cars around, they exhausts fumes would look all the same regardless of car. If its white and kind of bluish...and smells like a weird burnt product...you got a coolant leak somewhere.

07-27-2020, 03:59 PM	#10
alone1i Not pro yet Join Date: Jul 2019 Drives: 2020 Toyota GT86 Location: Auckland, New Zealand Posts: 139 Thanks: 555 Thanked 53 Times in 32 Posts Mentioned: 1 Post(s) Tagged: 0 Thread(s)	Thank you

07-27-2020, 04:46 PM	#11
ToySub1946 Senior Member Join Date: Oct 2014 Drives: 15FRS, 05MustangGT, 85Toyota truck Location: Eureka, Ca. Posts: 574 Thanks: 672 Thanked 590 Times in 279 Posts Mentioned: 5 Post(s) Tagged: 1 Thread(s)	Simply worded differently from others above.... FIRST OF ALL...51 degrees f is certainly not very cold...yet the air must be moist. I don't really understand science....yet from experience I know this: When you turn off a warm/hot engine on a cool day, the exhaust system is of course also hot. The hot exhaust system for some reason sucks in the damp air after the engine is turned off. That air/water vapor takes a nap inside the entire exhaust system until that system is warmed up again, upon engine start. You'll then see what may appear like grey exhaust...seemingly oil burning, yet it's simply white smoke from water now escaping the exhaust. Best to not look at your exhaust, just simply drive off.

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