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neverin

Member Since: 26 Sep 2016
Location: worksop
Posts: 47

2010 Defender 110 Puma 2.4 XS CSW Stornoway Grey

Update

HAve been waiting to post a progress report.

Not perfect all the time.

Sometimes the engine sounds perfect and quiet. Other times there is still a Detonation type rattle, more often than not now.

THere must be something else wrong, but it seems to drive ok and have enough power. Its just the detonation noise.

5th Jan 2017 9:34am

Vmesch

Member Since: 06 Dec 2014
Location: Antwerp - Lier
Posts: 47

Has anyone noticed some kind of power increase when experiencing the 'bag of spanners' phenomenon? I was driving home last day and was cruising at constant speed when it occurred (cold motor) and it was speeding up without changing the position of my foot on the pedal.... This could be pointing towards air intake problem? puma 2.2 MY2013
[:O]===[O:]

5th Jan 2017 6:44pm

neverin

Member Since: 26 Sep 2016
Location: worksop
Posts: 47

ive often wondered about air temperature as the engine seems stronger the colder the weather?

5th Jan 2017 7:41pm

Vmesch

Member Since: 06 Dec 2014
Location: Antwerp - Lier
Posts: 47

just same thoughts from my side: the colder the weather, the smoother it runs!

puma 2.2 MY2013
[:O]===[O:]

5th Jan 2017 7:43pm

ROBBONTHEROCK

Member Since: 23 Jun 2014
Location: Aberdeenshire
Posts: 637

2007 Defender 110 Puma 2.4 XS CSW Firenze Red

neverin wrote:
ive often wondered about air temperature as the engine seems stronger the colder the weather?

Colder air means it's more dense, packed with more oxygen per cubic meter, therefore the engine is getting more oxygen for any given speed.

Same principle as what your intercooler is trying to do.

Cheer
Andy

5th Jan 2017 7:52pm

neverin

Member Since: 26 Sep 2016
Location: worksop
Posts: 47

so will a more capable intercooler make the engine run better and more consistent?

6th Jan 2017 7:59am

ROBBONTHEROCK

Member Since: 23 Jun 2014
Location: Aberdeenshire
Posts: 637

Absolutely, but there is a trade off between air cooling and creating a restriction on the air flow which effectively starves the engine of air.

So what I'm trying to say is an intercooler is a carefully designed component to maximise air flow for a given temp drop.

Check out the BAS airflow, there is quite a bit of info out there on that.

Cheers. Andy.

6th Jan 2017 8:08am

neverin

Member Since: 26 Sep 2016
Location: worksop
Posts: 47

might sell it a buy a td5?

11th Jan 2017 1:25pm

Dreamweapon

Member Since: 19 Dec 2016
Location: Hessische Odenwald
Posts: 55

2008 Defender 110 Puma 2.4 HT Cairns Blue

Try changing onto an "Ultimate" or "Premium" diesel for a couple of tanks, or adding a good quality diesel additive. Always helps mine when it gets too rattly.

13th Jan 2017 12:22pm

neverin

Member Since: 26 Sep 2016
Location: worksop
Posts: 47

I occasionally drive a luton van which is an 07 plate with a puma 2.4.

That makes the same detonation noise although its not as prominent due to having more sound insulation than my defender

13th Jan 2017 12:42pm

neverin

Member Since: 26 Sep 2016
Location: worksop
Posts: 47

What do you class as a good quality diesel additive?

13th Jan 2017 12:43pm

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