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sncek



Member Since: 14 Mar 2012
Location: Glasgow
Posts: 2

United Kingdom 2007 Defender 90 Puma 2.4 Black LE Java Black
How to crank puma without firing
Hi .. can anyone help. I'm about to fit a recon turbo and to prime the turbo I need to crank the engine without it firing. Can anyone advise how to do this?
Post #1069423 10th Jun 2025 2:58pm
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andy63



Member Since: 30 Jun 2023
Location: north east
Posts: 783

United Kingdom 
If its a 2.2 then the inertia switch..
I'm told the 2.4 doesn't have an inertia switch , which would be the easiest option..
After that most probably the camshaft sensor would be the easiest to get to..but it is still tucked away..
You will likely have codes to clear whichever method you use
Post #1069424 10th Jun 2025 3:59pm
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jbcollier



Member Since: 29 Apr 2024
Location: Edmonton AB
Posts: 252

Canada 2009 Defender 110 Puma 2.4 SW Alpine White
Why not just force oil through the turbo bearings using a syringe? spin the turbo by hand while doing it. That will be enough lubrication for a cold start.

More importantly, Change the oil and filter, and flush the oil feed line to the turbo. Better yet, just fit a new feed line.
Post #1069464 11th Jun 2025 1:14am
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Bluest



Member Since: 23 Apr 2016
Location: Lancashire
Posts: 4285

United Kingdom 2007 Defender 110 Puma 2.4 XS CSW Java Black
On a 2.4 if you disconnect the crank sensor it will turn over but not fire. 2007 110 TDCi Station Wagon XS
Post #1069470 11th Jun 2025 7:14am
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blackwolf



Member Since: 03 Nov 2009
Location: South West England
Posts: 17830

United Kingdom 2007 Defender 110 Puma 2.4 DCPU Stornoway Grey
I'd opt for the crank sensor as the simplest method.

It's a little ironic that after so many "my Puma cranks but won't start" threads of the years we now have a "how can I crank my Puma without starting" thread. Damn things never do what you want! Very Happy
Post #1069473 11th Jun 2025 9:10am
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andy63



Member Since: 30 Jun 2023
Location: north east
Posts: 783

United Kingdom 
Lol..
I remember asking the same question myself a while back..
In my case it was so that I could do actual cyl compression checks..👍
Post #1069492 11th Jun 2025 11:45am
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sncek



Member Since: 14 Mar 2012
Location: Glasgow
Posts: 2

United Kingdom 2007 Defender 90 Puma 2.4 Black LE Java Black
Many thanks for all your replies. I can get to the crankshaft sensor quite easily as I had to release the cat to get access to the underside bolts on the turbo.

Just a note re my experience taking off the turbo. One of the bolts on the underside holding the oil return tube is almost impossible to get access to. The manual states that this should be done prior to releasing the three bolts holding the turbo to the manifold.

After struggling for quite some time, I decided to remove the three bolts holding the turbo to the manifold. The turbo then fell sideways away from the engine as the return oil feed pipe has a flexible section which allowed this to happen, giving easy access to the troublesome bolts (I'd also released the bolt at the bottom of the oil feed)
Post #1070472 28th Jun 2025 8:11am
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jbcollier



Member Since: 29 Apr 2024
Location: Edmonton AB
Posts: 252

Canada 2009 Defender 110 Puma 2.4 SW Alpine White
To remove the inner turbo oil return bolt, I go underneath and use a couple of very long extensions, the last having a "wobble" head", on a 3/8" ratchet.
Post #1070488 28th Jun 2025 1:29pm
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