 | Home > Puma (Tdci) > Defender 2.4 engine compression |
 
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| Eduardo Member Since: 28 Aug 2008 Location: Región Metropolitana Posts: 2108   
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Hi there,
I just trying to discard problems that produce the overheating in 6th gear at 120 KPH under load. And one of them could be the engine. So, a compression test for the cilinders was performed in my 2.4 TDCi engine. Results are in the level of 360 PSI and one with 355 PSI. (380-400 are the values for a new 2.4 Puma engine) According my Indy those values are normal for a motor with almost 300,000 km in the clock and should not be the culprit of the overheating and everything points to the radiator. Any thoughts? Cheers to all Eduardo MY 2007 110 SW PUMA 2.4: Big Fog of 64' MY 1994 Jayco 1207 Folding camper: "El Tremendo"  Click image to enlarge |
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12th Sep 2018 4:43pm |
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| Bergos Member Since: 08 Aug 2015 Location: Somewhere in Portugal Posts: 95  
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Possible causes:
- your coolant fluid level is low OR your coolant fluid has wrong water - anti-freeze proportions ( 50/50) and doesn't absorb heat in an efficient way, - you are using a wrong engine oil, which doesn't meet the Ford WSS-M2C913-B/C/D norm, - your accessory belt is the wrong size or worn out and slipping, - airflow is restricted by mud, registration plate on the grill, whatsoever..., - radiator is clogged - change the radiator, - viscous fan is not working (would cause overheating at low speeds rather than highway speeds), - the water pump is dying - change the water pump, - the lower coolant hose is collapsing - put a new hose, - your CHT sensor is crazy - change the sensor, - your head gasket is broken and needs changing, - your head/block is cracked and you need a new engine, - some or all of the above. Now, first thing you need to do is a reliable block test with the magical blue liquid tester. Good luck and let us know what the reason was. On my search to solve this problem I have change the thermostat to PEL500110 (82C), put the viscous fan spacer, the correct belt (as opposed to the longer 2.2 Puma belt). All of this has made some difference but when on highway at 130kph and 35+C ambient, I still see 100+C on uphills. Than it drops to 82-90C. Can you describe your case a bit better? Bergos LR Defender 110 HT 2007 (2.4 Puma) https://www.facebook.com/LR.Wanderlust/ Last edited by Bergos on 17th Sep 2018 3:34pm. Edited 2 times in total |
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12th Sep 2018 5:02pm |
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| Eduardo Member Since: 28 Aug 2008 Location: Región Metropolitana Posts: 2108
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Hi Bergos,
All the things that you mentioned has been checked and the only thing where I have some doubts is the radiator. My problem is similar to yours: Limp mode when Uphill + high ambient temp + high speed in 6th gear. After some seconds temps goes to normal and the engines ends its limp mode and works OK. I already change the belt, put the fan spacer and change the thermostat to the low temp one. All sensors are in good conditions and doenst show any sign to be outside the range. Compression test is as good as the blue liquid test, so I dont see the need to do the other test (quite cheap indeed) Tanto tiempo MK, cuando nos vamos a juntar? its what i'm doing today (change to a lower gear to avoid the problem), but is a little bit annoying. I'm agree that the Puma cooling system are not well designed for high temps. I'm looking now for replace the radiator with a more efficient Allisport one Cheers and thanks to all Eduardo MY 2007 110 SW PUMA 2.4: Big Fog of 64' MY 1994 Jayco 1207 Folding camper: "El Tremendo" Click image to enlarge |
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12th Sep 2018 7:03pm |
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| Bergos Member Since: 08 Aug 2015 Location: Somewhere in Portugal Posts: 95
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Please, don't forget to write something when you solve this.
Right now, even in 40C ambient I don't reach the 115C CHT but sometimes it comes close. Maybe this is by design, I don't know... I would feel much better if it never goes above 95C. Bergos LR Defender 110 HT 2007 (2.4 Puma) https://www.facebook.com/LR.Wanderlust/ |
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12th Sep 2018 7:09pm |
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| Eduardo Member Since: 28 Aug 2008 Location: Región Metropolitana Posts: 2108
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For sure Bergos Eduardo
MY 2007 110 SW PUMA 2.4: Big Fog of 64' MY 1994 Jayco 1207 Folding camper: "El Tremendo" Click image to enlarge |
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12th Sep 2018 7:36pm |
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| NickMc Member Since: 01 Oct 2014 Location: Norn Iron Posts: 1568  
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Have you had a coolant system pressure test done? Normally will did leaks if you have any.
Td5 and Tdci Radiators always seem to split and leak in the left hand bottom corner seen quite a few fail in that spot. The 2.4 Tdci isn’t a great engine in my opinion full stop  |
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12th Sep 2018 11:00pm |
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| Cupboard Member Since: 21 Mar 2014 Location: Suffolk Posts: 2971  
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115?!
I start backing off when mine goes above 95! Maybe I've got more headroom than I thought. |
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13th Sep 2018 8:30am |
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| Eduardo Member Since: 28 Aug 2008 Location: Región Metropolitana Posts: 2108
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Thanks for the answers!
No leakages in the cooling system. Coolant level is the same for months I usually not try to going up to 110°C. So... Appears that the uprated radiator from allisport will be the next step (not cheap  )
Cheers to all! Eduardo MY 2007 110 SW PUMA 2.4: Big Fog of 64' MY 1994 Jayco 1207 Folding camper: "El Tremendo" Click image to enlarge |
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13th Sep 2018 2:17pm |
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| nickhodgson Member Since: 08 Dec 2009 Location: Zambia Posts: 172 |
Are you on your original radiator? Has it also done 300,000kms?
If you change it and it was proved to be the culprit then it would be great to remove the end tanks and see if the channels inside are blocked or not? Cheers Nick 1995 300tdi Defender 90 P/UP 2011 Puma Defender 130 D/C 2000 300tdi Defender 110 P/UP 2015 Discovery 4 SDV6 HSE |
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13th Sep 2018 5:33pm |
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| Fabio Member Since: 05 Aug 2011 Location: Somerset Posts: 589 
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Hi All,
This happened to mine last week in Spain. Mine only has 70000 miles. First time. I'm not sure what caused it. Although last year it almost did the same thing and it was cold (xmas) I think that in hotter climates mine runs about 10 degrees hotter according to the ultragauge. Fabio |
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13th Sep 2018 5:47pm |
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| NickMc Member Since: 01 Oct 2014 Location: Norn Iron Posts: 1568
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Just be careful of scan data vs actual data - don’t always trust it
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14th Sep 2018 12:50am |
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| pannawonica Member Since: 21 Nov 2010 Location: Clackline Western Australia Posts: 568 
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All the advice given is right on the money! I went through this a few years back, and after all the mods which do help in 50C ambient temperatures! What I found was that with a tune 40% more power, a marginal cooling system has no more too give! What I think is the real cure would be a seriously larger capacity radiator not one of a marginal increase. In lower ambient temperatures there’s never an issue after the mods, only when heavy towing up hill with your welly hard down !
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14th Sep 2018 3:08am |
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| Eduardo Member Since: 28 Aug 2008 Location: Región Metropolitana Posts: 2108
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Ok,
I'm with the same radiator but the problem appears at around 100,000+ kms As I see, some new money will be put on an uprated Allisport radiatior (As soon as Andrew will moveits equipment to his new workshop  )
I will inform what happens. Cherrs to all! Eduardo MY 2007 110 SW PUMA 2.4: Big Fog of 64' MY 1994 Jayco 1207 Folding camper: "El Tremendo" Click image to enlarge |
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14th Sep 2018 4:18pm |
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| NickMc Member Since: 01 Oct 2014 Location: Norn Iron Posts: 1568
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Have you seen this?
https://www.nakatanenga.de/en/vehicle-equi...-td4?c=311 |
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16th Sep 2018 4:38pm |
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