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FBH Weird Start Up Spitting Sounds and Flame Out - FIXED!
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jonathanrichards
 


Member Since: 11 Jan 2018
Location: Hull
Posts: 145

United Kingdom 2008 Discovery 3 TDV6 HSE Auto Stornoway GreyDiscovery 3

Looks like a bit of a mission!

I've got a second FBH pump, so I'll jury rig up a complete fuel supply system with the spare pump and a fuel can. I've seen some FBH set ups where people are testing them with the suction side of the pump just in a open, vented can.

https://www.youtube.com/watch?v=SamwzYqIu20&t=79s this for example.

This way, I can eliminate the heater itself as a problem and see if it is the fuel supply that's causing the flame outs.

Then I will progress to using the pump fitted onto the D3 and test the high pressure and suction sides to see if I can chase the issue down.

Sound like a plan?
  
Post #20151884th Jan 2019 4:32 pm
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Nc1989
 


Member Since: 28 Apr 2015
Location: Doncaster
Posts: 202

United Kingdom 2005 Discovery 3 TDV6 S Manual Java BlackDiscovery 3

Yep sounds perfect. Easiest way to prove the fuel system is/isn’t at fault Thumbs Up
  
Post #20154065th Jan 2019 11:19 am
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Narpy
 


Member Since: 18 Jul 2011
Location: Stockport
Posts: 7830

2005 Discovery 3 TDV6 S Manual Cairns BlueDiscovery 3

Thinking outside of the box, have you tried running your FBH with the air filter removed?
Mine makes a very similar "back firing" pop if I stick my thumb over the air intake.
Maybe, just maybe, your problem is air related and not bubbles in the fuel. Wink
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Post #20154135th Jan 2019 11:32 am
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jonathanrichards
 


Member Since: 11 Jan 2018
Location: Hull
Posts: 145

United Kingdom 2008 Discovery 3 TDV6 HSE Auto Stornoway GreyDiscovery 3

Yes I have.

It makes the same popping sounds but louder!
  
Post #20154275th Jan 2019 12:32 pm
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yogi972
 


Member Since: 05 Jun 2011
Location: Kineton
Posts: 3372

United Kingdom 2010 Discovery 4 3.0 TDV6 HSE Auto Alaska WhiteDiscovery 4

Get an air line into the intake as I said earlier in the post
Thumbs Up
  
Post #20154305th Jan 2019 12:37 pm
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jonathanrichards
 


Member Since: 11 Jan 2018
Location: Hull
Posts: 145

United Kingdom 2008 Discovery 3 TDV6 HSE Auto Stornoway GreyDiscovery 3

I thought that was used to start a carboned up heater and then clear it?

I cleaned the heater out a few attempts ago so there's only some soot in there.


  
Post #20154525th Jan 2019 2:00 pm
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yogi972
 


Member Since: 05 Jun 2011
Location: Kineton
Posts: 3372

United Kingdom 2010 Discovery 4 3.0 TDV6 HSE Auto Alaska WhiteDiscovery 4

Surely worth a try as it’s even easier than the fuel line route (excuse the pun )

I only suggest as my parents D3 had exactly the same symptoms
  
Post #20154785th Jan 2019 4:12 pm
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yogi972
 


Member Since: 05 Jun 2011
Location: Kineton
Posts: 3372

United Kingdom 2010 Discovery 4 3.0 TDV6 HSE Auto Alaska WhiteDiscovery 4

Nice job on the clean up btw Thumbs Up
  
Post #20154805th Jan 2019 4:13 pm
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Nc1989
 


Member Since: 28 Apr 2015
Location: Doncaster
Posts: 202

United Kingdom 2005 Discovery 3 TDV6 S Manual Java BlackDiscovery 3

An airline won’t help, its had a new burner assembly and a clean out so there should be no crap to burn out...

I’d strongly advise against an airline or brake cleaner down the inlet, I know plenty of people have done it with success before but there is a ceramic Venturi in the burner assembly that is prone to cracking which then writes the burner off. I wouldn’t be doing anything to make the burner run hotter than necessary by force feeding it air or other stuff. You don’t know how much you may be shortening it’s life by doing that.
  
Post #20155395th Jan 2019 6:11 pm
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yogi972
 


Member Since: 05 Jun 2011
Location: Kineton
Posts: 3372

United Kingdom 2010 Discovery 4 3.0 TDV6 HSE Auto Alaska WhiteDiscovery 4

I never mentioned force feeding or adding any cleaner at all

M just say in this is what I and others have done, it worked for me ( and others)
It was a gentle breeze down the intake to keep the air moving...
  
Post #20156055th Jan 2019 8:19 pm
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Nc1989
 


Member Since: 28 Apr 2015
Location: Doncaster
Posts: 202

United Kingdom 2005 Discovery 3 TDV6 S Manual Java BlackDiscovery 3

I was just addressing the information that is out there spurred on by your suggestion rather than anything you said or didn’t say.
  
Post #20156085th Jan 2019 8:30 pm
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jonathanrichards
 


Member Since: 11 Jan 2018
Location: Hull
Posts: 145

United Kingdom 2008 Discovery 3 TDV6 HSE Auto Stornoway GreyDiscovery 3

I fitted a new pump and the heater has had a good clean out, new sensors and burner unit (glow included), so the only real thing that's left is the pump (which seems to work) and the fan (also works) and the logic board.

So either the logic board is duff or the fuel supply is faulty. The exhaust seems clear as does the intake.
  
Post #20156175th Jan 2019 9:12 pm
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jonathanrichards
 


Member Since: 11 Jan 2018
Location: Hull
Posts: 145

United Kingdom 2008 Discovery 3 TDV6 HSE Auto Stornoway GreyDiscovery 3

IT WORKS!!!

Here's how I did it.

https://youtu.be/x85NqKLHPhQ
  
Post #20169559th Jan 2019 9:08 pm
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Ben4
 


Member Since: 28 Apr 2017
Location: Buckinghamshire
Posts: 934

United Kingdom 2016 Discovery 4 3.0 SDV6 Landmark LE Auto Santorini BlackDiscovery 4

congratulations!
just in time as well as it's fcking cold!
 formerly Disco3Ben

2016 D4, Santorini Black
2007 D3, Black - sold 
 
Post #20169619th Jan 2019 9:26 pm
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jonathanrichards
 


Member Since: 11 Jan 2018
Location: Hull
Posts: 145

United Kingdom 2008 Discovery 3 TDV6 HSE Auto Stornoway GreyDiscovery 3

Exactly!
  
Post #20169639th Jan 2019 9:30 pm
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