FBH problem, again

Mike Trident · 1st January 2020, 09:30

My FBH was working fine until last night. I noticed something wasn't quite right but left it until this morning to investigate.

It goes through the start up process, pump can be heard clicking, but not increase in pace like it normally does. Instead, the pump stops and the FBH goes into evacuate mode, clearing itself of diesel & air vapour (white smoke)

There is a little heat at the FBH end of the exhaust pipe, so it's trying but it looks like the flame is going out.

What's the most likely cause? In need of a de-coke? Or is there another possibility?

Thanks in advance

trebor · 1st January 2020, 11:47

It sounds like the flame is present and either goes out or at least thinks it has gone out and shuts down

The glow plug acts as a flame sensor as well as initially glowing to ignite the fuel and if the resistance is incorrect it will shut it down.

Any chance you can do a video from start up to shut down and I will listen to it for you, if you do not want all the bother of uploading to you tube to be able to post on here, send me a pm if you wish and you can whats app it over.

The FBH would have to come off the car to change the glow plug

Mike Trident · 1st January 2020, 12:20

Thanks for the reply.

I have just been out to investigate further. Couldn't hear the water pump running, so I pulled the plug and put 12v to it. It worked fine, as it should really, it's only 12 months old.

Cleaned the plug connections and all is well again.

Must have got hot, then shut down.

Mike Trident · 1st January 2020, 12:23

The FBH has caused me more grief than the whole car lol.

1st January 2020, 09:30	#1
Mike Trident Posted a thing or two Rover 75 CDTi Saloon & Citroen C1 Join Date: Jun 2016 Location: Oakenshaw, Near Bradford Posts: 1,622 Thanks: 385 Thanked 552 Times in 328 Posts	FBH problem, again My FBH was working fine until last night. I noticed something wasn't quite right but left it until this morning to investigate. It goes through the start up process, pump can be heard clicking, but not increase in pace like it normally does. Instead, the pump stops and the FBH goes into evacuate mode, clearing itself of diesel & air vapour (white smoke) There is a little heat at the FBH end of the exhaust pipe, so it's trying but it looks like the flame is going out. What's the most likely cause? In need of a de-coke? Or is there another possibility? Thanks in advance __________________ Rover 75 2.0 CDTi (131Ps) Conn SE Saloon. (Manual) 160 Remap, cruise control, electric window blind, temp gauge, Real walnut / ZT interior, FBH with GSM control. BORN Tuesday, 5th October 2004 @ 12:35:52 This vehicle was the 104,679th 75 to run off the production line, out of 112,381 This vehicle was the 3,318th 75 CDT Connoisseur SE (135) to be made out of 4,744 This vehicle was the 12,440th 75 in Starlight Silver (code: MBB) to be made out of 14,280 Starlight Silver 75s

1st January 2020, 11:47	#2
trebor This is my second home Rover 75 CDTi Connoisseur SE & MG ZT Saloon 190 Join Date: Jun 2007 Location: Coven Posts: 12,522 Thanks: 526 Thanked 1,877 Times in 885 Posts	It sounds like the flame is present and either goes out or at least thinks it has gone out and shuts down The glow plug acts as a flame sensor as well as initially glowing to ignite the fuel and if the resistance is incorrect it will shut it down. Any chance you can do a video from start up to shut down and I will listen to it for you, if you do not want all the bother of uploading to you tube to be able to post on here, send me a pm if you wish and you can whats app it over. The FBH would have to come off the car to change the glow plug __________________ www.midlandsnanomeets.co.uk Robs Car Gallery Coven near Wolverhampton WV9 2000 Cowley Built Rover 75 2.0 V6 Club SE/ Atlantic Blue/ Sandstone/Walnut (daily driver) 2003 Land Rover Freelander 1 TD4 HSE Helsinki Blue/Black Leather (swmbo daily driver)

1st January 2020, 12:20	#3
Mike Trident Posted a thing or two Rover 75 CDTi Saloon & Citroen C1 Join Date: Jun 2016 Location: Oakenshaw, Near Bradford Posts: 1,622 Thanks: 385 Thanked 552 Times in 328 Posts	Thanks for the reply. I have just been out to investigate further. Couldn't hear the water pump running, so I pulled the plug and put 12v to it. It worked fine, as it should really, it's only 12 months old. Cleaned the plug connections and all is well again. Must have got hot, then shut down. __________________ Rover 75 2.0 CDTi (131Ps) Conn SE Saloon. (Manual) 160 Remap, cruise control, electric window blind, temp gauge, Real walnut / ZT interior, FBH with GSM control. BORN Tuesday, 5th October 2004 @ 12:35:52 This vehicle was the 104,679th 75 to run off the production line, out of 112,381 This vehicle was the 3,318th 75 CDT Connoisseur SE (135) to be made out of 4,744 This vehicle was the 12,440th 75 in Starlight Silver (code: MBB) to be made out of 14,280 Starlight Silver 75s

1st January 2020, 12:23	#4
Mike Trident Posted a thing or two Rover 75 CDTi Saloon & Citroen C1 Join Date: Jun 2016 Location: Oakenshaw, Near Bradford Posts: 1,622 Thanks: 385 Thanked 552 Times in 328 Posts	The FBH has caused me more grief than the whole car lol. __________________ Rover 75 2.0 CDTi (131Ps) Conn SE Saloon. (Manual) 160 Remap, cruise control, electric window blind, temp gauge, Real walnut / ZT interior, FBH with GSM control. BORN Tuesday, 5th October 2004 @ 12:35:52 This vehicle was the 104,679th 75 to run off the production line, out of 112,381 This vehicle was the 3,318th 75 CDT Connoisseur SE (135) to be made out of 4,744 This vehicle was the 12,440th 75 in Starlight Silver (code: MBB) to be made out of 14,280 Starlight Silver 75s