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At wits end.
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Disco-Jim
 


Member Since: 01 Mar 2024
Location: Wisbech
Posts: 68

United Kingdom 2006 Discovery 3 TDV6 Base 7 Seat Manual Bonatti GreyDiscovery 3
At wits end.

So this engine I fitted a week or two ago appears to have a cracked block or head now.

Do the blocks crack or is it a common fault for the head?

It’s not the EGR coolers which I have changed both today.

I’m getting no mayo in cap or on stick. No steam out the exhaust, no misfire. So I am really losing the will with this.

Any thoughts? Go for another engine or take both heads off and swap for good ones?
  
Post #23763391st Sep 2024 2:00 pm
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eightfoot
 


Member Since: 12 Apr 2015
Location: sunny essex
Posts: 799

United Kingdom 2005 Discovery 3 TDV6 S Auto Bonatti GreyDiscovery 3

do havn't said what your problem is
 please excuse any grammer/punctuation mistakes,i'm thick,thankyou
current vehicles 2005 d3 2013 d4 
 
Post #23763431st Sep 2024 2:25 pm
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Disco-Jim
 


Member Since: 01 Mar 2024
Location: Wisbech
Posts: 68

United Kingdom 2006 Discovery 3 TDV6 Base 7 Seat Manual Bonatti GreyDiscovery 3

Sorry, cooling system is pressuring and forcing coolant out. Bubbles coming up from bottom of header tank
  
Post #23763451st Sep 2024 2:45 pm
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Breg90
 


Member Since: 04 Feb 2017
Location: Falkirk
Posts: 358

United Kingdom 2008 Discovery 3 TDV6 XS Manual Java BlackDiscovery 3

Leaky EGR valve coolers, leaky oil cooler in the Vee of the engine, head gasket?

Not heard of head cracking issues, but doesn't mean it does not happen.
 Series one 1949 - in bits, chassis is strapped to the ceiling in my garage (beside the canoe)
LR 90 - In bits
Disco 3 - currently in bits 
 
Post #23763461st Sep 2024 2:54 pm
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Disco-Jim
 


Member Since: 01 Mar 2024
Location: Wisbech
Posts: 68

United Kingdom 2006 Discovery 3 TDV6 Base 7 Seat Manual Bonatti GreyDiscovery 3

Done EGR coolers. No change.

Doubt it’s oil cooler as I’m getting combustion gasses over pressurising the header tank, also no oil/water mix.
  
Post #23763471st Sep 2024 3:02 pm
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eightfoot
 


Member Since: 12 Apr 2015
Location: sunny essex
Posts: 799

United Kingdom 2005 Discovery 3 TDV6 S Auto Bonatti GreyDiscovery 3

are you sure its not just air in the system as they can be a pain to bleed have you bled the system or just filled and run it ? have you done a block gas test
 please excuse any grammer/punctuation mistakes,i'm thick,thankyou
current vehicles 2005 d3 2013 d4 
 
Post #23763491st Sep 2024 3:14 pm
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Disco-Jim
 


Member Since: 01 Mar 2024
Location: Wisbech
Posts: 68

United Kingdom 2006 Discovery 3 TDV6 Base 7 Seat Manual Bonatti GreyDiscovery 3

1 million percent.

The second you start it the system has a large amount of pressure in it if you try to remove the cap. It’s bubbling like crazy and pushing water out.
  
Post #23763501st Sep 2024 3:37 pm
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Pete K
 


Member Since: 15 Jan 2016
Location: GL
Posts: 10640

England 2005 Discovery 3 TDV6 HSE Auto Rimini RedDiscovery 3

I guess you can remove the injectors.

Pressurise the coolant system with a pump in the cap. Leave for an hour, see if it drops

Then inspect down the cylinders to see if one filled with water. (Or turn engine over by hand)

To save time you could just remove drivers side injectors first , and hope it’s the easy side head gasket gone.
  
Post #23763511st Sep 2024 4:03 pm
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PROFSR G
 


Member Since: 06 Mar 2017
Location: Lost
Posts: 4999

Ukraine 2009 Discovery 3 TDV6 Commercial XS Auto Stornoway GreyDiscovery 3

You could try a sniffer test on the coolant reservoir but that would only confirm or otherwise head gasket/EGR cooler failure. Pete's suggestion would indicate which bank has failed if it's a head gasket.

It does sound like a badly blown head gasket but if I recall correctly was this not a "running" engine you bought from the breaker?
 yµ (idµ - eAµ) ψ=mψ

 
 
Post #23763541st Sep 2024 4:24 pm
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Disco-Jim
 


Member Since: 01 Mar 2024
Location: Wisbech
Posts: 68

United Kingdom 2006 Discovery 3 TDV6 Base 7 Seat Manual Bonatti GreyDiscovery 3

Sold to me as a good running engine but then said sold as seen. No warranty
  
Post #23763571st Sep 2024 4:46 pm
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