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Home > Puma (Tdci) > Diesel Runaway Help please
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Ianh



Member Since: 17 Sep 2018
Location: Essex
Posts: 2335

United Kingdom 
Sam smith wrote:
okay thank you, the actuator should be movable by hand i am assuming?

With the circlip off the linkage should be so loose it feels like it’s disconnected

https://www.defender2.net/forum/post853115.html#853115
Post #1068187 20th May 2025 9:58pm
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Sam smith



Member Since: 12 Aug 2021
Location: Suffolk
Posts: 76

United Kingdom 2009 Defender 110 Puma 2.4 HT Epsom Green
hank wrote:
I had this happen in France. It was in injector. One of the injector solenoids had jammed open injecting masses of fuel into the engine.

That amount of oil in the intake pipework is not uncommon and is just downstream of the PCV return which suggests crankcase pressure.

Test the resistance of each injector and see whether any one seems out compared with the others


Thank you for the suggestion, i will look at this at the weekend. It made the diesel runaway happen for you as well?
Post #1068188 20th May 2025 10:07pm
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landy andy



Member Since: 15 Feb 2009
Location: Ware, Herts
Posts: 5917

2006 Defender 110 Td5 USW Zermatt Silver
What colour was the smoke?
Smell?
Post #1068189 20th May 2025 10:11pm
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blackwolf



Member Since: 03 Nov 2009
Location: South West England
Posts: 17768

United Kingdom 2007 Defender 110 Puma 2.4 DCPU Stornoway Grey
Ianh wrote:
I suspect it’s a faulty turbo actuator , or linkage to actuator sticking fully open when engine was running.

I think Blackwolf had something similar on his 2.4 a while back.

Interesting you have no DTC’s.


I doubt it is a faulty actuator, the engine would still respond to the throttle and would stop on the key if the actuator stuck on full boost.

In the absence of loads of oil in the intercooler my suspicion is a failed injector.
Post #1068193 20th May 2025 11:09pm
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