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FBH- replacing the glow plug
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Member Since: 16 May 2015
Location: 80085 Pebkac Terrace
Posts: 160

2007 Discovery 3 TDV6 HSE Auto Zermatt SilverDiscovery 3
FBH- replacing the glow plug

Wanted to know from those who know, what You think are the symptoms, aspects and facts that would indicate, that finally the glow plug in the thermo top is to be replaced by a new one,
instead of:::
- trying to clean it,
- Doing the fuse 28 interrupt
- helping it with the "blow" while igniting or
- changing the CO2-ratio via the webasto-software or
- making sure the fuel lines are propper.

Is the state of the burner set / the glow plug readable by colour? or deformation? or structure or mass of the carb?

A new glow plug is about € 200,-- so it can make sense to make sure, wich procedure / chain of caring and testing it would be have a reliable decision on what to do best, maybe sometimes changing it is better then endless hoping and making only white smoke but heat.

Maybe this could bring up a collection of ideas to later on create a guideline on the getting older and older FBHs. (Besides all the other topics like 1533, altox, bell, gsm, pin2, wbus, interiour fan or pokemons)

 TDV6MY07-LHD-noDPF-AutoboxSteelPan-newOilPump-AuxBatt-altox5-iidbt-wheelspacer-ffrrMod-stealth camper  
Post #175381825th Dec 2016 11:44 pm
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Member Since: 22 Dec 2009
Location: Maidstone
Posts: 5380

United Kingdom 2006 Discovery 3 TDV6 Metropolis LE Auto Bonatti GreyDiscovery 3

On the blown air version typical symptons wold be heater would go through its start up sequence, ie water pump running air fan running, lots of clicks etc then after a failed start it would shut down again.
Sadly the fbh does this even when its in good nick!
You can remove and check glow plug just like you would any diesel engine glow plug, just be sure to check what voltage it runs on as not all are fulll bore battery voltage Shocked
 Disco 5, no not one of them, I mean my fifth!  
Post #175384326th Dec 2016 1:56 am
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Member Since: 05 Feb 2006
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Posts: 17839

United Kingdom 2013 Discovery 4 3.0 SDV6 HSE Auto Baltic BlueDiscovery 4

Have you checked the glowplug's resistance?

Details in my FBH servicing guide.

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Post #175386426th Dec 2016 9:42 am
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