Member Since: 29 Apr 2017
Location: East Sussex
Posts: 191
Does it work.
How can I tell if the FBH is working right on my discovery 3. I get a bit of a paraffin smell but as far as I can tel no difference to cabin getting hotter quicker or can I see a smoke from front passenger side wheel arch. I am guessing the fbh exhaust outlet is u set body at front of wheel arch and is the metal pipe there. I can feel hot air coming from or but cannot see any smoke.
Cheers
5th Nov 2017 9:32 pm
DSL Keeper of the wheelie bin
Member Since: 11 May 2006
Location: Off again! :-)
Posts: 73130
Sounds about right.
5th Nov 2017 9:39 pm
Dave T
Member Since: 03 Jul 2009
Location: Glasgow
Posts: 6910
If the smoke is coming out and the pipe is hot, the; that’s pretty much it. I believe it just assists the engine in warming the coolant, so the cabin doesn’t just get hot.Joined the BMWX5 45e group
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5th Nov 2017 9:41 pm
lynalldiscovery
Member Since: 22 Dec 2009
Location: Maidstone
Posts: 7274
It should only smoke a little as its starts and that it, if it keeps on smoking its needs some tlc, when they are running right they will be blowing red hot air out of the little exhaust pipe with zero smoke.
I notice the car gets to operating temp faster so the cabin gets warmer (if thats the right word!) faster and er thats it.
6th Nov 2017 7:22 am
Oscarsball
Member Since: 29 Apr 2017
Location: East Sussex
Posts: 191
Thanks all
Definitely red hot air coming from fbh exhaust so think it is working then.
It was very cold this morning when I started and I am pretty certain the gauge seemed to get up quicker so seems good.
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