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Cobra_Phil2



Member Since: 11 Dec 2017
Location: Papua New Guinea
Posts: 1
Compression Test Specs?
Just had the head replaced on my 2012 2.2 Defender and now we are facing a no start condition. The shop checked the compression in all 4 cylinders with the results of 200,250,150, and 110 psi. I tried to find the compression check specs. in the manual but could not locate them. I also searched the forum and found 380-390psi after 8-10 cranks but it was not for the Puma engine. I just wanted to make sure of the correct specs. Thanks.
Post #670208 11th Dec 2017 4:44am
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ian series 1



Member Since: 17 Nov 2014
Location: south
Posts: 3127
United Kingdom 2008 Defender 90 Puma 2.4 CSW Bonatti Grey
Those all look very low readings for a 2.2,
You should be seeing anything between 350 - 400psi for a healthy engine!


Why was the head replaced?
Did you do any work to anything else, could it have been over fueling at some point,
I wonder if the Bores and rings are ok?

Which cylinder was reading 110? 80" 80" 86" 88" 90"

Wanted, Forward Control Anything considered.
Post #670211 11th Dec 2017 8:18am
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pannawonica



Member Since: 21 Nov 2010
Location: Clackline Western Australia
Posts: 568
Australia 
110psi is getting close to an old Petrol lawnmower Big Cry
Post #670257 11th Dec 2017 1:03pm
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ian series 1



Member Since: 17 Nov 2014
Location: south
Posts: 3127
United Kingdom 2008 Defender 90 Puma 2.4 CSW Bonatti Grey
Laughing Yes, not a good reading by a long shot! 80" 80" 86" 88" 90"

Wanted, Forward Control Anything considered.
Post #670266 11th Dec 2017 1:50pm
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nickhodgson



Member Since: 08 Dec 2009
Location: Zambia
Posts: 174
 
I wonder if your valves are actually closing? Could the timing for the camshafts be slightly wrong? 1995 300tdi Defender 90 P/UP
2011 Puma Defender 130 D/C
2000 300tdi Defender 110 P/UP
2015 Discovery 4 SDV6 HSE
Post #670307 11th Dec 2017 5:26pm
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