3.0 si - bonnet steam when raining in traffic ?

RyanB88 · Post by **RyanB88** » Wed May 24, 2017 3:46 pm

Hi

Car doesn't over heat and fluid levels are fine. No steam/smoke when dry.

Problem = when raining and in stop start traffic, does anyone else notice steam coming off the bonnet? Is this something to worry about? I've never had this before with any other cars! Not even my M3 did this and that ran hot!

Rusky · Post by **Rusky** » Wed May 24, 2017 3:53 pm

Have seen it on mine in the right conditions. Dont think mine has any insulation under the bonnet so i guess thats why. Well thats what i figure anyway.

ShaunKC · Post by **ShaunKC** » Wed May 24, 2017 3:55 pm

I love seeing steam coming off my bonnet in the rain, it gives me something to look at in traffic and reminds me that I have a 3-litre beast under the bonnet!

bmwaddict · Post by **bmwaddict** » Wed May 24, 2017 3:55 pm

Happens with mine occasionally.

Ducklakeview · Post by **Ducklakeview** » Wed May 24, 2017 4:16 pm

I'd say it's normal, these cars have no under bonnet insulation as mentioned, and the engine can get a tad hot (normal) so under light rain, I'd expect it.

Mike

Crazy Harry · Post by **Crazy Harry** » Wed May 24, 2017 4:39 pm

Not seen it on my Zed but my Focus RS did it every time it got a fine covering of water/rain on it. Not a problem I had it seven years and covered just over 198K and never burst into flames

NickDE · Post by **NickDE** » Wed May 24, 2017 6:32 pm

Mine does it in light rain

biojo · Post by **biojo** » Wed May 24, 2017 8:57 pm

most bmws do it, no insulation on bonnet, also think the bonnets alloy so absorbs heat quicker.

after a long drive ones n light rain mine was still steaming after been parked up 5 mins

Post by **srhutch** » Wed May 24, 2017 8:59 pm

As above, in insulated aluminium bonnet will be why.

Silverzedtom · Post by **Silverzedtom** » Wed May 24, 2017 9:06 pm

Same here. My windscreen also steams when the heaters on and it's drizzling

Mr Tidy · Post by **Mr Tidy** » Thu May 25, 2017 12:47 am

Mine does this too!

I haven't had it happen on any other car since I owned a Rover P6B 3500S, which also had an aluminium bonnet!

NickDE · Post by **NickDE** » Thu May 25, 2017 9:21 pm

Is it colour related ? Do dark cars do it more because dark colours transmit the heat better ? Or maybe the steam is more visible against a dark background compared to a silver/grey bonnet ?

grumps · Post by **grumps** » Thu May 25, 2017 10:21 pm

I've been steaming a few times in the rain, and in the dry as well come to think of it.

Fox889 · Post by **Fox889** » Thu May 25, 2017 10:25 pm

Mine doesn't go out in the rain so the answer is errr no!

Newbers · Post by **Newbers** » Fri May 26, 2017 5:37 pm

I see it quite a bit - too many rainy traffic jams

I got a huge shock yesterday - black smoke coming over the bonnet. It stopped when the 15 plate Kia 4x4 in front of me drove off

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