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Discovery63
Member Since: 02 Aug 2019
Location: Wadebridge, Cornwall
Posts: 3
  
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2012 Disco 4 SDV6 with 75k miles, had drivers side cracked inlet manifold replaced by local garage but when all reassembled the car had a misfire at 2000 rpm when it was driven.. revs fine when stationary. They couldn't find the fault so it's now at a local independent LR specialist.
They have the very latest diagnostic equipment which apparently has 'direct line' back to LR, however even the specialist is scratching his head at the moment about what the fault is.. they have checked fitment of new manifold, rechecked all connections, checked turbo(s) etc.. but has soon as you hit 2000 rpm while driving it still gets a very bad misfire which eventually puts it in limp mode..
Has anyone else experienced this or know what the fault could be?
Thanks in advance for any help
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 2nd Aug 2019 12:14 pm |
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lynalldiscovery
Member Since: 22 Dec 2009
Location: Maidstone
Posts: 7274
  
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Injector pipes from common rail to injector ends damaged internally?
Thinking restricted fuel flow.
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| 2nd Aug 2019 12:25 pm |
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Discovery63
Member Since: 02 Aug 2019
Location: Wadebridge, Cornwall
Posts: 3
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Thanks Lynall, the 1st garage did mention that after fitting new manifold, it did show for a short time a fuel rail fault code on their diagnostics.. I'll past that suggestion on.
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| 2nd Aug 2019 12:55 pm |
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Nasos
Member Since: 01 Mar 2025
Location: Chania
Posts: 4
 
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I have exactly the same symptoms. Did you find what the problem is?"
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| 12th May 2025 1:44 pm |
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Nasos
Member Since: 01 Mar 2025
Location: Chania
Posts: 4
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| Re: misfire at 2000 rpm.. |
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Discovery63 wrote:2012 Disco 4 SDV6 with 75k miles, had drivers side cracked inlet manifold replaced by local garage but when all reassembled the car had a misfire at 2000 rpm when it was driven.. revs fine when stationary. They couldn't find the fault so it's now at a local independent LR specialist.
They have the very latest diagnostic equipment which apparently has 'direct line' back to LR, however even the specialist is scratching his head at the moment about what the fault is.. they have checked fitment of new manifold, rechecked all connections, checked turbo(s) etc.. but has soon as you hit 2000 rpm while driving it still gets a very bad misfire which eventually puts it in limp mode..
Has anyone else experienced this or know what the fault could be?
Thanks in advance for any help
Did you find what the problem is?
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| 12th May 2025 10:25 pm |
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Grant-B
Member Since: 02 Apr 2025
Location: West Midlands, Tamworth
Posts: 173
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if the injector connector wiring has been disassembled & re-connected,
these sodding connectors are very fragile, & I wonder if one or 2 of them are not snapped together properly
OR
the lock pins on these connector plugs are broken now & engine vibration at 2000 revs is all they need to shake the connector giving an intermittent firing ?
I'm just trying to ponder solutions....
and hope you get it sorted.
regards
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| 15th May 2025 2:35 pm |
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Nasos
Member Since: 01 Mar 2025
Location: Chania
Posts: 4
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Thank you Grant.
Already checked.
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| 15th May 2025 7:02 pm |
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