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Puma90man

Member Since: 27 Feb 2011
Location: South Africa
Posts: 26

2009 Defender 90 Puma 2.4 Fire LE Vesuvius Orange

Failure to start in extreme cold

Fellow Defenders

I have been up the mountains in the snow for the first time with my 90 Puma and had problems every morning trying to get the vehicle started. Although it can somehow be expected I still think SA's cold is not the same as what some of you must be using your vehicles in up north. I would expect it was only -4 C, not colder.

The vehicle would start first time but cut out after 2min or so. I suspected that there was water in the seperator and ended up throwing hot water on the diesel filter every morning which seems to have helped. But draining the filter afterwords proved that there was no water in the seperator\filter and now I need to know if it is "normal" for this to happen at high altitudes in very cold weather?

My previous TDi and TD5 Defenders did not have this problem in similar conditions

21st Aug 2011 10:39am

pom

Member Since: 01 Jun 2010
Location: Worcester
Posts: 1343

mine started no issues in -15 last winter. Maybe there is some treatment added to our diesel at the refinery though to stop it gelling though.

Maybe you need to add something to yours ?

Pom

21st Aug 2011 11:56am

MK

Member Since: 28 Aug 2008
Location: Santiago
Posts: 2425

2007 Defender 110 Puma 2.4 SW Chawton White

It is not normal at all. Mine has been at -17ºC and no issues. Maybe there is a prob in the lifting pump? Puma 110" SW

.............................................................
Earth first. Other planets later

21st Aug 2011 2:09pm

BigRuss

Member Since: 15 May 2010
Location: Norfolk
Posts: 2785

2010 Defender 110 Puma 2.4 USW Santorini Black

I had mine start in the -20 C range, remember that diesel starts to turn I to a more gel like substance before freezing at around the -9 C.
be warned if you start the engine in temperatures below -9 C leave them running for a while or you'll just fill your fuel filter with congealed diesel and you'll then need to replace it

Russell
2011MY 110 XS USW Black

21st Aug 2011 3:07pm

Zinke

Member Since: 27 Jan 2009
Location: Scunthorpe
Posts: 670

Untreated diesel will start to gel at -4, and as your in SA then i guess they dont sell winter fuel there. Try adding some 2-stroke oil at a ratio of 300:1 and this should help a little.

Pete.

22nd Aug 2011 7:21am

dgardel

Member Since: 30 Nov 2008
Location: Veneto (Heart & Head)
Posts: 3586

Re: Failure to start in extreme cold

Puma90man wrote:
Fellow Defenders

I have been up the mountains in the snow for the first time with my 90 Puma and had problems every morning trying to get the vehicle started. Although it can somehow be expected I still think SA's cold is not the same as what some of you must be using your vehicles in up north. I would expect it was only -4 C, not colder.

The vehicle would start first time but cut out after 2min or so. I suspected that there was water in the seperator and ended up throwing hot water on the diesel filter every morning which seems to have helped. But draining the filter afterwords proved that there was no water in the seperator\filter and now I need to know if it is "normal" for this to happen at high altitudes in very cold weather?

My previous TDi and TD5 Defenders did not have this problem in similar conditions

It is not related to the engine but to the VERY BAD DIESEL QUALITY....

It is the paraffin (you start the engine,but the paraffin block the filter....) Discovery 5 td6 HSE Stornoway Gray Outback Engineering Limited Edition

IID Pro MV License

22nd Aug 2011 12:24pm

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