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vaucluse



Member Since: 04 Feb 2012
Location: SE London
Posts: 185
2007 Defender 110 Puma 2.4 SW Java Black
What should a Puma engine sound like
Hi guys,
I'm recently back to owning a LR. The previous 2 were a D3 and a D2 but this time it's a Defender. I've had a few nigles over the last 3 or 4 weeks where following a sump replacement due to a leak from the liquigasket I ended up with various noises from the engine area. Firstly was the diesel knock under light load due to a missing airbox clip and badly located airbox lid (under wing portion tabs not located correctly) and then there was the poxy red engine bracket thingammy bolted or not as the case was to the rear of the cylinder head ( one bolt missing, the other loose). Why they couldn't fit a pair of star washers or split washers is beyond me.
The thing that is still bothering me is this, car starts and runs beautifully, no smoke at all and idles perfectly, plenty of power too, but when it warms up fully it sounds very hollow and metallicky when accelerating - almost sounds like oil starvation around 2000 rpm. If you gun it hard it sounds meaty and fine.

I know what a good TDV6 and a TD5 are supposed to sound like but I'm lost when it comes to the Puma.

Does this sound familiar to anyone? Is this what it's supposed to be like Or am I just being paranoid?


Many thanks in advance

Mark
Post #128742 4th Mar 2012 9:18pm
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Zagato
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Member Since: 08 Jan 2011
Location: Billingshurst West Sussex
Posts: 5013
United Kingdom 
Difficult to interpret descriptions Confused but you are always welcome to listen to mine and vise a versa! I am 5 mins from Junc 8 M25 Thumbs Up

Has it been tuned/re-mapped?
Post #128748 4th Mar 2012 9:27pm
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bm52



Member Since: 04 Apr 2010
Location: Kent
Posts: 2189
United Kingdom 2014 Defender 110 Puma 2.2 XS CSW Havana
I am no expert on this either but from my experience mine sounded similar to yours on cheaper diesel. it sounded better on cheap diesel with 2 stroke added but seems to drive much better and quieter using the better diesels [such as BP Ultimate] and using 2 Stroke.

mine sounds really bad using Sainbury's or Shell so i have'nt used either now for a long time.

have you tried switching diesel makes? BM52
Post #128749 4th Mar 2012 9:28pm
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rossy



Member Since: 29 Nov 2010
Location: Co. Roscommon
Posts: 1296
Ireland 2011 Defender 110 Puma 2.4 CSW Stornoway Grey
checkout the thread entitled 'another rattly puma post' on page 7 of the TDCI section. Your situation sounds identical to mine. It seems that in most cases its a combination of fuel quality and/or slightly out of adjustment injector timing that can cause this. My' rattlyness' comes and goes and doesn't really bother me as performance and fuel consumption are fine
Post #128756 4th Mar 2012 9:37pm
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JWL



Member Since: 26 Oct 2011
Location: Hereford
Posts: 3443
England 2002 Defender 110 Td5 SW Coniston Green
Very much tongue in cheek.......

Must be the Transit engine going back to its pikey ways Whistle
Post #128763 4th Mar 2012 9:48pm
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rossy



Member Since: 29 Nov 2010
Location: Co. Roscommon
Posts: 1296
Ireland 2011 Defender 110 Puma 2.4 CSW Stornoway Grey
yes but with 40lbs ft more torque than the 'british leyland' engines it will tow the (stolen) tarmac roller much better Rolling with laughter
Post #128769 4th Mar 2012 10:00pm
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vaucluse



Member Since: 04 Feb 2012
Location: SE London
Posts: 185
2007 Defender 110 Puma 2.4 SW Java Black
Zagato wrote:
Difficult to interpret descriptions Confused but you are always welcome to listen to mine and vise a versa! I am 5 mins from Junc 8 M25 Thumbs Up

Has it been tuned/re-mapped?


Thanks Zagato, I might take you up on your kind offer sometime.

As for tuning / remapping then no. It's running version 'D' ecu software which I'm assuming it got as part of Q068B in October 2010.
Post #128771 4th Mar 2012 10:21pm
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vaucluse



Member Since: 04 Feb 2012
Location: SE London
Posts: 185
2007 Defender 110 Puma 2.4 SW Java Black
bm52 wrote:
I am no expert on this either but from my experience mine sounded similar to yours on cheaper diesel. it sounded better on cheap diesel with 2 stroke added but seems to drive much better and quieter using the better diesels [such as BP Ultimate] and using 2 Stroke.

mine sounds really bad using Sainbury's or Shell so i have'nt used either now for a long time.

have you tried switching diesel makes?


Hi BM52,

I'm not sure this noise is a combustion noise (diesel knock) as I can hear a little of that in the background. This almost sounds like there's no oil in the engine as you accelerate moderately past 2000rpm when fully warmed up. When it's cold its sound is much quieter and smoother if that makes sense?
I can live with it as long as it's not doing any damage.
I do get occasional clutch chatter in neutral with the clutch up at the traffic lights - wondering if that's causing this resonance?

Kind regards

Mark
Post #128772 4th Mar 2012 10:34pm
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Honker



Member Since: 26 Jun 2011
Location: St Albans
Posts: 353
 2014 Defender 110 Puma 2.2 XS CSW Corris Grey
I do wonder if reading these forums then spending time listening to the engine is a healthy occupation. Mines only used bp ultimate, not changed the oil (4000 miles ) , no 2so , performance is great but can sound almost refined one day and a bag of spanners the next.
But then again there is no soundproofing , you can see the engine thru the gap between bonnet and wing and it's not the most sophisticated of lumps is it.
Love it to bits but I've concluded that I'll only really know if something's not right with it (the engine that is) when it stops making a dieselly racket. Before then there's the radio to turn up.

Stu
Post #128780 4th Mar 2012 11:02pm
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vaucluse



Member Since: 04 Feb 2012
Location: SE London
Posts: 185
2007 Defender 110 Puma 2.4 SW Java Black
Have to agree with you Stu - definitely not a healthy occupation. But if it didn't sound so rubbish I wouldn't be concerned. As for turning up the radio - I'm all for that but I'm still trying to acquire one of those Thumbs Up (mines a base spec)
Post #128803 5th Mar 2012 7:05am
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Honker



Member Since: 26 Jun 2011
Location: St Albans
Posts: 353
 2014 Defender 110 Puma 2.2 XS CSW Corris Grey
vaucluse wrote:
Have to agree with you Stu - definitely not a healthy occupation. But if it didn't sound so rubbish I wouldn't be concerned. As for turning up the radio - I'm all for that but I'm still trying to acquire one of those Thumbs Up (mines a base spec)


Ah! well like Zag has offered if you're in and about St Albans area you're more than welcome to try mine. We can both stand there peering under the bonnets listening intently... Laughing
Stu
Post #128822 5th Mar 2012 9:44am
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boxer



Member Since: 12 Jun 2011
Location: north yorkshire
Posts: 48
United Kingdom 1990 Defender 90 200 Tdi HT Coniston Green
I have the exact same issues diesel knock low revs smooth when revved hard,i have added some 2 stroke a few days ago done 100 mile since and not noticed a differance.one thing i have noticed it sounds better when the window is down ie outside.Also i agree with you regards the engine sounding better when cold which is very strange.My 110 is only 2 month old and has cover 1600 miles.
Post #128942 5th Mar 2012 6:58pm
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Bearcat



Member Since: 09 Dec 2011
Location: Dublin
Posts: 57
Ireland 
Mine sounds like a bag of loose spanners at idle even though serviced to LR spec re fluids and timing etc spot on. Not a patch on td5 re that burble sound but imho it's a grand engine, and is very thrifty on fuel under norm loads. Current...07 90 Puma commercial
Porsche 930 1988 (laid up)
Previous Td5 90 & V8 90
Post #129970 9th Mar 2012 7:34am
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Caterham



Member Since: 06 Nov 2008
Location: Birmingham
Posts: 6308
England 2011 Defender 110 Puma 2.4 XS CSW Stornoway Grey
well its re-assuring to know other suffer with the bag of spanners one minute and sweet as a nut the next.......
I'm convinced the 2so helps but I'm yet to find a cure and I can't help but think there is one.

if its sweet one minute why can't it be like it all the time????

personally I'm sure the engine pulls MUCH stronger at low revs when its running sweet than not. fuel consumption never really seems to change, no smoke just lots of sometimes and not at other times??

what the hell is it.... Big Cry

could it be the fuel rail - I just don't know. I am however sure its not the egr (now I've said that I'll be proven wrong I'm sure). there seems to be a connection with the induction side as this sounds great when running smooth but I'm really not sure Big Cry Big Cry Crying or Very sad
Post #129986 9th Mar 2012 8:44am
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Naks



Member Since: 27 Jan 2009
Location: Stellenbosch, ZA
Posts: 2646
South Africa 2010 Defender 90 Puma 2.4 SW Alpine White
You can listen to a standard Puma idling here:  --
2010 Defender Puma 90 + BAS remap + Alive IC + Slickshift + Ashcroft ATB rear
2015 Range Rover Sport V8 Supercharged



Defender Puma Workshop Manual: https://bit.ly/2zZ1en9
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Post #129996 9th Mar 2012 9:51am
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