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Diesel preheater 'steaming'
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prhutton
 


Member Since: 01 Apr 2010
Location: Down on the farm in Worcestershire
Posts: 54

United Kingdom 2006 Discovery 3 TDV6 HSE Auto Zambezi SilverDiscovery 3
Diesel preheater 'steaming'

Hi,

The D3 is my 4th LR of one description or another, and I've still got a 25 year old 110 that I can't part with.

I've had a few niggles with the D3 and with the dealer (Droitwich LR). Yesterday the D3 started to steam / smoke from under the bonnet when stationary and cold. The dealer told my wife this was normal for the D3 and RR fitted with this engine and happened in particular ambient temperatures. He said it was a feature of the diesel preheater. I'm quite used to the normal LR nonsense but this one is pushing the boundaries.

I can't see any similar issue listed on the forum, am I missing something?

Many thanks,

Paul PRH  
Post #6308661st Apr 2010 9:18 pm
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wiggs
 


Member Since: 03 Sep 2006
Location: Manchester
Posts: 14368

United Kingdom 2015 Discovery 4 3.0 SDV6 HSE Auto Fuji WhiteDiscovery 4

If it was 5 degrees or less , then perfectly normal

Its the FBH ( fuel burning heater ) ..there is an exhaust comming down the front passenger wheel arch ..but the silencer in the engine bay has 2 small holes in it ...incase your driving through water or the exhaust is blocked G4 Gone ...but not forgotten  
Post #6308701st Apr 2010 9:23 pm
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MacLeod 313
 


Member Since: 18 Apr 2008
Location: away
Posts: 10723

Scotland 2006 Discovery 3 TDV6 HSE Auto Zambezi SilverDiscovery 3

Hi there and Welcome, its the FBH - Fuel Burning Heater, the unit sits behind the passenger headlight, and the exhaust is behind the passenger front wheel.

If temperatures hit below a certain temp, think its 4 degrees, the FBH starts to aid warming up  
Post #6308711st Apr 2010 9:23 pm
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MacLeod 313
 


Member Since: 18 Apr 2008
Location: away
Posts: 10723

Scotland 2006 Discovery 3 TDV6 HSE Auto Zambezi SilverDiscovery 3

Must type faster Mr. Green  
Post #6308721st Apr 2010 9:24 pm
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prhutton
 


Member Since: 01 Apr 2010
Location: Down on the farm in Worcestershire
Posts: 54

United Kingdom 2006 Discovery 3 TDV6 HSE Auto Zambezi SilverDiscovery 3

Marvellous. Now I know what to look for I can see it is a 'widely' discussed topic! Only LR could do something like this.... PRH  
Post #6308751st Apr 2010 9:29 pm
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blue_manc
 


Member Since: 16 Mar 2009
Location: Deepest Darkest Lancashire
Posts: 551

United Kingdom 2008 Discovery 3 TDV6 XS Auto Cairns BlueDiscovery 3

Bloody embarrassing when in town though - every day people think my car is going to explode....  
Post #6308861st Apr 2010 9:36 pm
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prhutton
 


Member Since: 01 Apr 2010
Location: Down on the farm in Worcestershire
Posts: 54

United Kingdom 2006 Discovery 3 TDV6 HSE Auto Zambezi SilverDiscovery 3

I've had the D3 for a couple of months and we have had some cold weather before yesterday and not noticed anything at all. Would this indicate the FBH hasn't been operational but has just decided to come to life? PRH  
Post #6309041st Apr 2010 9:54 pm
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prhutton
 


Member Since: 01 Apr 2010
Location: Down on the farm in Worcestershire
Posts: 54

United Kingdom 2006 Discovery 3 TDV6 HSE Auto Zambezi SilverDiscovery 3

Given it was -6 etc. a few weeks back and I didn't see any smoke from the FBH, do you think it just decided to come to life yesterday? It has smoked a bit more today at outside temp of 1.5c. PRH  
Post #6309231st Apr 2010 9:59 pm
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kernowexpeditionaryforce
 


Member Since: 15 Jan 2009
Location: Kernow
Posts: 329

2006 Discovery 3 TDV6 S Auto Buckingham BlueDiscovery 3

its normal, theres normally a small puff of smoke as it starts....

lots of cars use this style additional heating..... Whistle  
Post #6309782nd Apr 2010 1:35 am
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MacLeod 313
 


Member Since: 18 Apr 2008
Location: away
Posts: 10723

Scotland 2006 Discovery 3 TDV6 HSE Auto Zambezi SilverDiscovery 3

prhutton wrote:
I've had the D3 for a couple of months and we have had some cold weather before yesterday and not noticed anything at all. Would this indicate the FBH hasn't been operational but has just decided to come to life?


It wont if the Diesel level is low, it wont start at all then  
Post #6310822nd Apr 2010 11:03 am
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robsmith
 


Member Since: 02 Sep 2007
Location: Staffordshire
Posts: 2393

United Kingdom 2005 Discovery 3 TDV6 S Manual Zermatt SilverDiscovery 3

Noticing the FBH exhaust or not depends on many things such as external temperature, humidity, wind speed, looking in the right place are the most obvious. I dare say others will contribute their observations.
Some of us also get a sort of "jet engine" smell when the FBH is running, again perfectly normal - the FBH has a sort of ram jet combustion chamber. Rob Smith
Silver rools OK
  
Post #6314293rd Apr 2010 9:10 am
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prhutton
 


Member Since: 01 Apr 2010
Location: Down on the farm in Worcestershire
Posts: 54

United Kingdom 2006 Discovery 3 TDV6 HSE Auto Zambezi SilverDiscovery 3

Thanks all. Now to work out why I'm only getting an average 21mpg....... PRH  
Post #6314353rd Apr 2010 9:23 am
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gingerbiker
 


Member Since: 09 Jun 2008
Location: North Yorks
Posts: 201

2008 Discovery 3 TDV6 SE Auto Santorini BlackDiscovery 3

remove the word 'only' from that sentence...  
Post #6314393rd Apr 2010 9:32 am
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drayman
 


Member Since: 18 Mar 2009
Location: kingswinford
Posts: 16

England 2005 Discovery 3 TDV6 HSE Auto Bonatti GreyDiscovery 3

does anyone know how to test the FBH is working apart from waiting for a cold morning ?  
Post #6314913rd Apr 2010 2:42 pm
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