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Steaming comming from the top of my car bonnet

Posted: Wed Jan 13, 2010 1:10 pm
by Kelayan
Hey i was wondering if someone could help me i have noticed that after driving in rain and stoping the rain is steaming and evaporating off my bonnet and i hear sizzling noises too. I temp gauge is fine and have checked if it faulty or not, the coolant and oil levels are all fine too. Is this normal on sports car as i have not seen it on my others cars. could some one help please??

Re: Steaming comming from the top of my car bonnet

Posted: Wed Jan 13, 2010 1:19 pm
by un1eash
Not sure about the sizzling noises but its normal to have steam. The bonnet on the Z4 is quite thin and made of aluminium so gets quite warm.

Re: Steaming comming from the top of my car bonnet

Posted: Wed Jan 13, 2010 1:30 pm
by Kelayan
the sizzling noise is from the rain steaming off! is it normal for the bonnet to be that hot to steam off like that?

Re: Steaming comming from the top of my car bonnet

Posted: Wed Jan 13, 2010 1:32 pm
by gannet
I get steam on mine never thought much of it to be honest and as unleash say it is quite thin and aluminium so bound to get a bit hot...

welcome to the forum btw :D

Re: Steaming comming from the top of my car bonnet

Posted: Wed Jan 13, 2010 1:34 pm
by Kelayan
gannet wrote:I get steam on mine never thought much of it to be honest and as unleash say it is quite thin and aluminium so bound to get a bit hot...

welcome to the forum btw :D

thanx for your help

Re: Steaming comming from the top of my car bonnet

Posted: Wed Jan 13, 2010 2:22 pm
by srhutch
common on the Z4 this is, had me worried the first time after I got to work only to look out of the window and find steam coming from the bonnet.

Re: Steaming comming from the top of my car bonnet

Posted: Thu Jan 14, 2010 12:39 pm
by MrMimmi
Quite thankful to hear that the steaming is common as I get the same thing. Having said that I went back to mine after about an hour of being parked up this morning and it was still steaming, is that normal?

Re: Steaming comming from the top of my car bonnet

Posted: Thu Jan 14, 2010 1:20 pm
by Lucy
I get this, and i did on my old car too. It's nothing to worry about, it's just the outcome of a hot engine and cold rain getting put together.

Re: Steaming comming from the top of my car bonnet

Posted: Thu Jan 14, 2010 9:28 pm
by daveg
Phew - was wondering what the steam was on the drive home. Looked at other cars in traffic and they didn't seem to have any so thought it couldn't be the rain :D

Re: Steaming comming from the top of my car bonnet

Posted: Sat Jan 16, 2010 7:11 pm
by GAZA62
Never noticed this may be i need to drive faster :D

Re: Steaming comming from the top of my car bonnet

Posted: Sat Jan 16, 2010 9:18 pm
by peddy
I get the steam too.

A little off topic... are all the metal panels aluminium?

Re: Steaming comming from the top of my car bonnet

Posted: Sat Jan 16, 2010 9:25 pm
by EdButler
peddy wrote: A little off topic... are all the metal panels aluminium?
Yep!

Re: Steaming comming from the top of my car bonnet

Posted: Sun Jan 17, 2010 3:13 pm
by GAZA62
EdButler wrote:
peddy wrote: A little off topic... are all the metal panels aluminium?
Yep!

Thought it was just the bonnet ?

Dread to think what panels cost i know the bonnet is around 2k or so i have been told not sure if that is fitted and sprayed or just the bonnet.

Re: Steaming comming from the top of my car bonnet

Posted: Sun Jan 17, 2010 3:20 pm
by srhutch
The bonnet is aluminium but don't think you will find any others are.

Re: Steaming comming from the top of my car bonnet

Posted: Sun Jan 17, 2010 4:47 pm
by Smokin
Hood/bonnet is aluminum and I don't think any of them have fiber insulation in there.