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george54321

Member Since: 22 Jun 2011
Location: Leicester
Posts: 2

2.4 Puma Engine Knock Noise

Hi Folks.
I have been running my Defender 110 Puma since I bought it new in 2007.
Its been subject to all the recalls etc but in general I think it's the best moter i've ever had.
It's comming up to its second MOT so I thought it's time to get a workshop manual & start doing the servicing myself. "So far so Good".
I've read all the service reports attachet to the workshop manual & the special service bulletin below is a worry to me to say the least. The Puma engine has been around for some time so I would have expected such a basic problem to have been sorted before it ever got put in a Landrover.
Anybody out there had engine problems as described in the Bullitin.

SERVICE BULLETINS
SPECIAL SERVICE ACTIONS
Ref:- 2.4 Puma Engine Knock Noise

Models LD - Defender
Title 2.4 Puma Engine Knock Noise.
Last Modified 21-JUL-2008 09:44
Category Engine
Symptom 497000 Engine Noise
Content
Issue:
Heavy audible knocking heard on start up.
Cause:
On start up oil pressures can cause the
piston cooling jets, (PCJ), to latch into a
zero flow condition. Due to hysteresis effect
in design the jets do not unlatch until the
engine is warm and the oil pressures lower
again. During this time with no pressurized
oil jet flow to the lower pistons / cylinder
bores, overheat and scuff conditions /
damage can occur.
Action:
Replace the engine assy but ensure only
engines post serial # ELD00080707063602
are used.
This condition will not occur on vehicles
post assured Vin# 9A767162.
Engines post the info above are fitted with
modified PCJ internal springs and this issue
is now closed.

3rd Jul 2011 6:12pm

CRJ

Member Since: 12 Mar 2011
Location: Sealand - Denmark
Posts: 253

1991 Defender 90 200 Tdi ST Alpine White

I had some problems that I thought was connected to the service bulletin - everything mentioned here: http://www.defender2.net/forum/topic6656.html?highlight=

Regards
CRJ 88 Ser. 3 1980 -sold
Puma 130 - 08- sold
90 200tdi 1991 - sold
88 Ser. 3 1977 200 TDI
110 CC 2003

3rd Jul 2011 6:23pm

Dave-H

Member Since: 08 Feb 2011
Location: Surrey
Posts: 1507

2007 Defender 90 Puma 2.4 HT Tonga Green

Yep ... mine was replaced under warranty at 2 weeks old, developed said 'knocking'.

No hassle or drama, had a spanking Disco to run around in whilst they changed engines.

Guns and Landrovers .... anything else is irrelevant.

3rd Jul 2011 6:24pm

CRJ

Member Since: 12 Mar 2011
Location: Sealand - Denmark
Posts: 253

I have been told that the problem appeared early on affected engines - not years and several miles later.
CRJ 88 Ser. 3 1980 -sold
Puma 130 - 08- sold
90 200tdi 1991 - sold
88 Ser. 3 1977 200 TDI
110 CC 2003

3rd Jul 2011 6:59pm

george54321

Member Since: 22 Jun 2011
Location: Leicester
Posts: 2

Hi folks.

Thanks for the info every little helps!
Keep smiling.

9th Jul 2011 2:34pm

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