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bear100

Member Since: 22 Mar 2010
Location: South Wales
Posts: 1939

2010 Defender 110 Puma 2.4 USW Santorini Black

jst, the engine performed well for 6 months after the head gasket but then suddenly started running hotter than before. Currently no gasses present after a drive just airlocked heaters

jb, I’m not getting any change of colour on the RELD test so assume there is no exhaust gas leak also no leak on the pressure test. any issues leaving the Egr cooler permanently bypassed? It’s deactivated via the remap.

Andy, I will check the little hose over the weekend, and also remove and inspect what hoses I can to check for blockages or delaminating 2023 Defender L663 V8
2016 Range Rover Autobiography 4.4 TDV8 (gone)
2010 110 XS Utility 2.4TDCI
2010 Range Rover Sport TDV8 (gone)
2007 Discovery HSE TDV6 (gone)
1993 110 csw 200 tdi (gone)
1994 90 HT 300 tdi (gone)
1994 discovery 300tdi (gone)
90 hybrid 3.5 v8 (gone)
Range rover bobtail 3.5 v8 (gone)

21st Jan 2025 9:46pm

jbcollier

Member Since: 29 Apr 2024
Location: Edmonton AB
Posts: 138

2009 Defender 110 Puma 2.4 SW Alpine White

My EGR valve and cooler are gone as I have them mapped out as well, works fine.

22nd Jan 2025 1:24am

SilverPuma

Member Since: 27 Oct 2023
Location: Devon
Posts: 36

2010 Defender 90 Puma 2.4 HT Stornoway Grey

Be interested in the outcome. I have an airlock in the heater matrix I think.

Hot coolant in supply hose to heater valve (just replaced AGAIN 🤬 albeit with an RDX one) but blower cold and hose from valve rear to matrix cold. Can shine a torch through the heater valve body and only 10% full of coolant.

Be grateful for best way of unblocking as not clearing by running engine with bleed point opened / expansion tank cap off etc….. 2010 2.4 TDCI Puma Defender 90

22nd Jan 2025 7:00pm

Siwynne

Member Since: 04 Nov 2016
Location: West lancs
Posts: 591

A vacuum purge and fill tool is less than £30 on amazon. Needs a small compressor to run but they are very effective at filling without introducing air. I have One and it’s a no fuss one hit job guaranteed to be air lock free. ( if you keep the pick up tube submerged)

22nd Jan 2025 8:36pm

jbcollier

Member Since: 29 Apr 2024
Location: Edmonton AB
Posts: 138

The fact your system is constantly "making air" is the concern. Mine did the same and was only resolved by a head and head gasket change. The head had micro-cracks that the shop said pressure tested just fine but I spoke with Turner and they have been selling a lot of heads so I decided to change mine as well. YMMV

23rd Jan 2025 2:35pm

bear100

Member Since: 22 Mar 2010
Location: South Wales
Posts: 1939

jb, this is what I'm thinking, initially the over pressure would happen only after at least a 2 hour run so thinking the head test would probably pass when cold. but I'm still not getting any reading on the RELD test? What's the cost of a new head?

Siwynne, ive actually got one which came with the coolant pressure test kit, might be worth a go? 2023 Defender L663 V8
2016 Range Rover Autobiography 4.4 TDV8 (gone)
2010 110 XS Utility 2.4TDCI
2010 Range Rover Sport TDV8 (gone)
2007 Discovery HSE TDV6 (gone)
1993 110 csw 200 tdi (gone)
1994 90 HT 300 tdi (gone)
1994 discovery 300tdi (gone)
90 hybrid 3.5 v8 (gone)
Range rover bobtail 3.5 v8 (gone)

23rd Jan 2025 4:46pm

jbcollier

Member Since: 29 Apr 2024
Location: Edmonton AB
Posts: 138

https://www.turnerengineering.co.uk/produc...es-springs

23rd Jan 2025 4:52pm

bear100

Member Since: 22 Mar 2010
Location: South Wales
Posts: 1939

not as bad as i was thinking!!

2023 Defender L663 V8
2016 Range Rover Autobiography 4.4 TDV8 (gone)
2010 110 XS Utility 2.4TDCI
2010 Range Rover Sport TDV8 (gone)
2007 Discovery HSE TDV6 (gone)
1993 110 csw 200 tdi (gone)
1994 90 HT 300 tdi (gone)
1994 discovery 300tdi (gone)
90 hybrid 3.5 v8 (gone)
Range rover bobtail 3.5 v8 (gone)

23rd Jan 2025 4:55pm

jbcollier

Member Since: 29 Apr 2024
Location: Edmonton AB
Posts: 138

That's what I thought. Comes with the valves/springs/etc so it is all ready to go. There are bare heads cheaper but I went with Turner as they have a good rep.

23rd Jan 2025 4:58pm

jst

Member Since: 14 Jan 2008
Location: Taunton
Posts: 8143

2011 Defender 110 Puma 2.4 USW Stornoway Grey

jbcollier wrote:
The fact your system is constantly "making air" is the concern. Mine did the same and was only resolved by a head and head gasket change. The head had micro-cracks that the shop said pressure tested just fine but I spoke with Turner and they have been selling a lot of heads so I decided to change mine as well. YMMV

This is what i have eluded too and concur with. Air is being introduced some where.

What was the reason the head gasket needed tk be changed the first time? Had that issue that caused the initial failure been fixed yet? Cheers

James
110 2012 XS Utility
130 2011 M57 bespoke Camper
90 2010 Hardtop
90 M57 1988 Hardtop

23rd Jan 2025 11:30pm

jst

Member Since: 14 Jan 2008
Location: Taunton
Posts: 8143

I think you need to bottom out the cause of the coolant loss rhe first time it happened. I have just reared the posts and can't see that rhe initial cause has been rectified.

Is it mapped? If so by who?

You can bypass the egr cooler with a piece of pipe Yes. Cheers

James
110 2012 XS Utility
130 2011 M57 bespoke Camper
90 2010 Hardtop
90 M57 1988 Hardtop

23rd Jan 2025 11:33pm

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