 | Home > Puma (Tdci) > Fuel cooler 2016 2.2 Puma |
 
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| Marks Landy Member Since: 09 Feb 2015 Location: Cheshire Posts: 296   
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Canβt see one on my 2.2
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12th Apr 2021 7:54pm |
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| llessur Member Since: 15 Nov 2011 Location: Hereford Posts: 151
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I don't know when or why it changed but here are the with and without parts
 Click image to enlarge Click image to enlarge |
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12th Apr 2021 8:04pm |
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| JPE Member Since: 19 Nov 2018 Location: South West England Posts: 315 
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My 2013 2.2 has one.
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12th Apr 2021 9:12pm |
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| JPE Member Since: 19 Nov 2018 Location: South West England Posts: 315
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According to lrworkshop.com the bypass is fitted from chassis VIN DA432380 onwards. Diagrams & part numbers can be found here -> https://www.lrworkshop.com/diagrams/land-r...mbly_45019
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12th Apr 2021 9:24pm |
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| HardCharger Member Since: 03 Mar 2013 Location: Manila, SFO, Amsterdam Posts: 673 
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2.4 Puma has a fuel cooler, the 2.2 Puma, does not.
It does, however, have a fuel system related pipe there where the fuel cooler should be. This is why it's still recommended to have a fuel cooler guard as it protects this wee pipe from the dangers of the world. |
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13th Apr 2021 4:38am |
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| Dinnu Member Since: 24 Dec 2019 Location: Lija Posts: 3188  
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My 2012 2.2 has one too. 1988 90 Hard Top, 19J Diesel Turbo, Shire Blue - Restoration ongoing
2012 90 CSW, 2.2TDCI, Santorini Black |
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13th Apr 2021 7:09am |
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| Rashers Member Since: 21 Jun 2015 Location: Norfolk Posts: 3335 
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Sorry to hijack the thread but I have a stupid question.
Apart from the obvious, what does the fuel cooler do (why is it fitted) and is it detrimental on vehicles where they have omitted them? |
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13th Apr 2021 7:53am |
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| Angus_Beef Member Since: 30 Apr 2015 Location: Oslo Posts: 434  
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my 2015 2.2 with DPF has one, contrary to what lrworkshop would indicate. Roaming around π³π΄π¨π
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13th Apr 2021 8:13am |
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| llessur Member Since: 15 Nov 2011 Location: Hereford Posts: 151
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I had it explained to me that modern high pressure injection engines leak more fuel, back to the tank,from the injector returns. Because the pressure is increased by the fuel pump, the temperature is raised.
When Diesel is heated it's ability to lubricate is reduced which is very harmful to close tolerance components like the injection pump. Also heated Diesel reduces engine power. I think its something like a a rise of 10 Β°C causes a power loss of 7.5%. Of course I think this was over simplified explanation and I presume there are many other effects. I bet emissions are effected and I wonder how our plastic fuel lines and tank cope with the increased temperatures. Last edited by llessur on 13th Apr 2021 2:59pm. Edited 1 time in total |
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13th Apr 2021 10:26am |
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| Dinnu Member Since: 24 Dec 2019 Location: Lija Posts: 3188
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Interesting. The problem is that liquids are incompressible, so the fuel pump is not compressing the diesel, but is only increasing the pressure. Very different thermodynamics vs fluid dynamics.
Although the name is 'cooler', I always thought that it is pre heating the fuel to lower emissions. But I could be wrong. I never investigated it in detail. 1988 90 Hard Top, 19J Diesel Turbo, Shire Blue - Restoration ongoing 2012 90 CSW, 2.2TDCI, Santorini Black |
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13th Apr 2021 11:38am |
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| RustyM Member Since: 28 Oct 2013 Location: Africa/The Med Posts: 222  
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Hi all,
Thank you for all your responses. So mine also has "The metal pipe" I do a lot of hot climate travel in my defender. I wonder if it is a "Fuel cooler" or if it serves another purpose also. Given that I use mine mostly in hot climates should I retro fit this "cooler"? Thank you all in advance for your help. Kind regards Matt 90 & Wolf 110 XS Previously owned SI SII SIIa SIII & Light weight (air portable) |
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13th Apr 2021 12:44pm |
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| Dinnu Member Since: 24 Dec 2019 Location: Lija Posts: 3188
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Perhaps what RustyM says consolidates more the possibility that the 'cooler' is actually a 'warmer'. If the defender was destined for a warm climate, then possibly they skip the cooler as it is not needed!!
Perhaps you can check the fuel tank and fuel filter if they are becoming too warm after a long drive. 1988 90 Hard Top, 19J Diesel Turbo, Shire Blue - Restoration ongoing 2012 90 CSW, 2.2TDCI, Santorini Black |
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13th Apr 2021 5:18pm |
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| Angus_Beef Member Since: 30 Apr 2015 Location: Oslo Posts: 434
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I was wrong. Maybe Iβve been reading the repair manuals too long - Iβd have wagered money I had one!
Click image to enlarge EDIT: now Iβm wondering where the low point to drain the coolant is since the workbook says to drain at the fuel cooler, and there is no drain plug on the radiator... π€ Roaming around π³π΄π¨π |
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13th Apr 2021 5:21pm |
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| custom90 Member Since: 21 Jan 2010 Location: South West, England. Posts: 19535
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You can drain from the thermostat hose, maybe not quite the very lowest point but very close. Diesel$ Live$ Matter. β½οΈπ’οΈπ¨βπ§π§°βοΈ RED, WHITE & BOOST! π¬π§
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13th Apr 2021 8:12pm |
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