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o4dn



Member Since: 08 Jan 2010
Location: South West
Posts: 579
France 2009 Defender 90 Puma 2.4 SW Alaska White
Rough, uneven idle with smoke when cold...
... Then all goes back to normal after a few minutes driving, what could be the cause?
Post #369760 5th Nov 2014 6:08pm
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o4dn



Member Since: 08 Jan 2010
Location: South West
Posts: 579
France 2009 Defender 90 Puma 2.4 SW Alaska White
Actually, I wonder if that could be an early indication of the battery getting weak (original battery on a 2009 2.4 Puma).

I checked with the Scangauge and voltage seems quite low, ~11.7V, before the engine fires up.

Could that cause the glowplugs not to warm up the chamber enough, thus the rough idling and smoke at cold start?
Post #369894 6th Nov 2014 8:51am
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landy andy



Member Since: 15 Feb 2009
Location: Ware, Herts
Posts: 5922
2006 Defender 110 Td5 USW Zermatt Silver
I would check each glow plug first.

Andy
Post #369897 6th Nov 2014 9:04am
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o4dn



Member Since: 08 Jan 2010
Location: South West
Posts: 579
France 2009 Defender 90 Puma 2.4 SW Alaska White
Shouldn't it log a DTC if a glow plug was at fault?
Post #369898 6th Nov 2014 9:09am
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chadjizz



Member Since: 25 Apr 2012
Location: sussex
Posts: 559
England 2013 Defender 130 Puma 2.2 HCPU Orkney Grey
i have the same thing with my 90. not rough but an uneven idle when driving until it warms ups. i just assumed it was something to do with fuel flow and being cold.
Post #370904 10th Nov 2014 9:41pm
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o4dn



Member Since: 08 Jan 2010
Location: South West
Posts: 579
France 2009 Defender 90 Puma 2.4 SW Alaska White
Thanks all for your answer!

Not sure this is related, but the fitting the EGR blanking plate seems to help, or maybe it's the just the weather being warmer lately... Smile
Post #371025 11th Nov 2014 1:35pm
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custom90



Member Since: 21 Jan 2010
Location: South West, England.
Posts: 20824
United Kingdom 
Sticky EGR no doubt, I got shot of mine.
Best choice imo, not cheap but cheaper in the long run.
Post #371030 11th Nov 2014 1:55pm
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carrotbay



Member Since: 18 Aug 2013
Location: Northants, UK
Posts: 707
United Kingdom 2008 Defender 110 BMW M57 3.0 Diesel XS CSW Auto Santorini Black
Steve . when you blanked your EGR did you do it at the EGR or the exhaust manifold the other side? I blanked at the EGR and had issues with exhaust fumes. I was recommended to do it at the manifold side but not sure why. 2008 Defender 110 XS SW - M57N2 / 8HP70X
Post #371032 11th Nov 2014 2:23pm
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