↓ Advertise on Defender2 ↓

Home > Puma (Tdci) > Puma 2.4 fuel economy got worse
Post Reply  Down to end
Page 2 of 2 <12
Print this entire topic · 
Bergos



Member Since: 08 Aug 2015
Location: Somewhere in Portugal
Posts: 95

Portugal 2007 Defender 110 Puma 2.4 HT Keswick Green
I am quite sceptic about putting Censored into my engine too. I went to buy a fuse in a moto-shop and then had this impuls to get a bottle of Ceratec and give it a try.
I was surprised by the effect in a big way. I was not expecting to see any significant improvement and then I looked at the fuel level and trip distance. So, I put fuel to make counts. That was the first fuelling when I got 9.2l/100 km. After I made almost 400 km on a highway and I put fuel again to see those 10l/100km (a bit more than 10, because I put the tank really full).
I have been having, as you can read in my first post of this thread, bad fuel economy for 2 years and now this surprise. I am still not sure what to think about it... Bergos

LR Defender 110 HT 2007 (2.4 Puma)
https://www.facebook.com/LR.Wanderlust/
Post #734212 11th Oct 2018 1:42pm
View user's profile Send private message View poster's gallery Reply with quote
Porny
Site Sponsor


Member Since: 31 Aug 2009
Location: Sutton Coldfield - West Midlands
Posts: 785

 
I'd replace the injector seals and redo the pilot injection learn.

Also - have you still got the EGR valve in place? IRB
The home of the first modified Keswick Green 90 - and the first 2.4 Puma through both the 200bhp and 550Nm barriers.

www.IRBdevelopments.com

www.facebook.com/irbdevelopments

www.integrated316.com

www.facebook.com/integrated316
Post #735276 17th Oct 2018 11:54am
View user's profile Send private message View poster's gallery Reply with quote
Bergos



Member Since: 08 Aug 2015
Location: Somewhere in Portugal
Posts: 95

Portugal 2007 Defender 110 Puma 2.4 HT Keswick Green
Bergos wrote:
I am quite sceptic about putting Censored into my engine too. I went to buy a fuse in a moto-shop and then had this impuls to get a bottle of Ceratec and give it a try.
I was surprised by the effect in a big way. I was not expecting to see any significant improvement and then I looked at the fuel level and trip distance. So, I put fuel to make counts. That was the first fuelling when I got 9.2l/100 km. After I made almost 400 km on a highway and I put fuel again to see those 10l/100km (a bit more than 10, because I put the tank really full).
I have been having, as you can read in my first post of this thread, bad fuel economy for 2 years and now this surprise. I am still not sure what to think about it...


So, new update on my fuel economy.
The car had been parked for 2.5 months with full tank.
After driving on mixed roads for around 900 km I put the tank full again and the fuel consumption went up again to 11.65l/100km (8.58km/l, 24.24 iMpG).
I am confused and don't know what to think about the situation. Was the Ceratec just a coincidence or it had an effect indeed but short lasting...
Or maybe the diesel in my fuel tank is not so good after 2 months...
After I did 400+ km on a highway and didn't fill up but I am sure that the results would be even worse.

So, what can cause the fuel economy to go up and down from 9 to 13 l/100 km?

Any hints? Bergos

LR Defender 110 HT 2007 (2.4 Puma)
https://www.facebook.com/LR.Wanderlust/
Post #750035 8th Jan 2019 6:28pm
View user's profile Send private message View poster's gallery Reply with quote
Bergos



Member Since: 08 Aug 2015
Location: Somewhere in Portugal
Posts: 95

Portugal 2007 Defender 110 Puma 2.4 HT Keswick Green
Hi.
Years are passing and the fuel efficiency of my car is not improving. I would say - it's gradually getting worse...
The car is serviced regularly. ECU does not record any errors...
EGR has been removed. I rarely use the A/C.
Do I have unrealistic expectations? Sometimes the car goes below 10 liters but it's exceptional and there is no clear pattern here...


Click image to enlarge




Click image to enlarge


And this is correlated with the unresolved engine temperature issue described here: https://www.defender2.net/forum/topic56815.html Bergos

LR Defender 110 HT 2007 (2.4 Puma)
https://www.facebook.com/LR.Wanderlust/
Post #921020 11th Sep 2021 12:09pm
View user's profile Send private message View poster's gallery Reply with quote
Bergos



Member Since: 08 Aug 2015
Location: Somewhere in Portugal
Posts: 95

Portugal 2007 Defender 110 Puma 2.4 HT Keswick Green
Well, well, seems that I have killed two birds with one shot - changing the radiator solved the overheating problem (see: https://www.defender2.net/forum/topic56815.html) AND the fuel economy problem!


Click image to enlarge


So, if your radiator is more than 10 yo and you have any of these problems or both, do not hesitate. Start with the radiator! Bergos

LR Defender 110 HT 2007 (2.4 Puma)
https://www.facebook.com/LR.Wanderlust/
Post #932429 4th Dec 2021 5:08pm
View user's profile Send private message View poster's gallery Reply with quote
Mago



Member Since: 25 Apr 2021
Location: Frankfurt
Posts: 22

Germany 
Very interesting, thanks for that.
My radiator is about 12 yeras old, since about 1.5 years I noticed a higher fuel consumption.
Checked all the usual parts, everything ok. Could you please explain which defect is affecting the radiator exactly?

Greetings
Very Happy Defender 110 TD5
Defender 110 Puma 2.4
Post #932608 6th Dec 2021 12:11pm
View user's profile Send private message View poster's gallery Reply with quote
Bergos



Member Since: 08 Aug 2015
Location: Somewhere in Portugal
Posts: 95

Portugal 2007 Defender 110 Puma 2.4 HT Keswick Green
I guess it is the internal corrosion. Something you don't see and is very difficult to notice and diagnose.
I knew about the overheating problem because I have a digital gauge showing me the real-time temperatures (water and oil). Without it you wouldn't notice anything until 115C when the ECU cuts the fuel.
I was not believing that the radiator is causing the problem, but seems that it really was. The OEM replacement is quite affordable and definitely worth it!
Seems that they last +/- 8 years and need to be replaced. Probably depends on a few variables - coolant quality, frequency of use etc. My car rests for months and is used only during holidays which can make the corrosion worse. Bergos

LR Defender 110 HT 2007 (2.4 Puma)
https://www.facebook.com/LR.Wanderlust/
Post #932972 9th Dec 2021 1:41pm
View user's profile Send private message View poster's gallery Reply with quote
Mago



Member Since: 25 Apr 2021
Location: Frankfurt
Posts: 22

Germany 
Thank you.
Maybe I´ll do a testdrive without the radiator and see if there is any difference.

Greetings
Very Happy Defender 110 TD5
Defender 110 Puma 2.4
Post #933282 12th Dec 2021 1:45pm
View user's profile Send private message View poster's gallery Reply with quote
Bergos



Member Since: 08 Aug 2015
Location: Somewhere in Portugal
Posts: 95

Portugal 2007 Defender 110 Puma 2.4 HT Keswick Green
You want to do WHAT??? Bergos

LR Defender 110 HT 2007 (2.4 Puma)
https://www.facebook.com/LR.Wanderlust/
Post #933843 16th Dec 2021 1:32pm
View user's profile Send private message View poster's gallery Reply with quote
Mago



Member Since: 25 Apr 2021
Location: Frankfurt
Posts: 22

Germany 
Mago wrote:
Maybe I´ll do a testdrive without the radiator and see if there is any difference.

Oh lala, there is an essential part of information missing. Shocked - Thanks Bergos!

I have a new radiator in my garage, the idea is to replace the old visco-radiator for testing.
Sorry for the missunderstanding .

Greetings
Very Happy Defender 110 TD5
Defender 110 Puma 2.4
Post #934124 18th Dec 2021 4:23pm
View user's profile Send private message View poster's gallery Reply with quote
Bergos



Member Since: 08 Aug 2015
Location: Somewhere in Portugal
Posts: 95

Portugal 2007 Defender 110 Puma 2.4 HT Keswick Green
Just to make sure we are talking about the same things...
This is a radiator:


Click image to enlarge
 Bergos

LR Defender 110 HT 2007 (2.4 Puma)
https://www.facebook.com/LR.Wanderlust/
Post #934174 18th Dec 2021 10:58pm
View user's profile Send private message View poster's gallery Reply with quote
Ecco



Member Since: 31 Oct 2015
Location: Kuala Lumpur
Posts: 278

Malaysia 2014 Defender 110 Puma 2.2 DCPU Galway Green
..i did noticed slight difference in fuel consumption, between Petronas and Shell fuel..truck was used on same way(city drive), so i guess, fuel seems to contribute for some reason..
Post #934183 19th Dec 2021 3:44am
View user's profile Send private message View poster's gallery Reply with quote
Mago



Member Since: 25 Apr 2021
Location: Frankfurt
Posts: 22

Germany 
Bergos wrote:
Just to make sure we are talking about the same things...

Yes, the large radiator next to the intercooler. Not the large Fan Whistle
Of course I do not make any testdriving without the radiator.

Greetings,
Very Happy Defender 110 TD5
Defender 110 Puma 2.4
Post #934243 19th Dec 2021 2:16pm
View user's profile Send private message View poster's gallery Reply with quote
spudfan



Member Since: 10 Sep 2007
Location: Co Donegal
Posts: 4428

Ireland 
Maybe a simple flush out of the radiator and coolant system would help things. 1982 88" 2.25 diesel
1992 110 200tdi csw -Zikali
2008 110 2.4 tdci csw-Zulu
2011 110 2.4 tdci csw-Masai
Post #934611 21st Dec 2021 10:46pm
View user's profile Send private message View poster's gallery Reply with quote
custom90



Member Since: 21 Jan 2010
Location: South West, England.
Posts: 19449

United Kingdom 
The OAT coolant is supposed to have a life of approx 5 years if I remember rightly.

Draining and re bleeding isn’t as complicated a job as it first seems, the more difficult part is having to go out of your way to dispose of it correctly.
And that being made more of a pain in the backside than it should be.

Is there much work involved with the rad replacement? Diesels Lives Matter. ⛽️🛢️👨‍🔧🧰⚙️
And if You Love the Country, then we’re on the same side ~
I got’ love for Britain, I got’ British pride’. 🇬🇧
Post #934740 22nd Dec 2021 8:27pm
View user's profile Send private message View poster's gallery Post Reply
Post Reply  Back to top
Page 2 of 2 <12
All times are GMT

Jump to  
Previous Topic | Next Topic >
Posting Rules
You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum



Site Copyright © 2006-2024 Futuranet Ltd & Martin Lewis
DEFENDER2.NET RSS Feed - All Forums