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Dinnu



Member Since: 24 Dec 2019
Location: Lija
Posts: 3140

Malta 2012 Defender 90 Puma 2.2 CSW Santorini Black
Good to hear that Tomotomo.

Too much diesel on the cylinder bore is not helping on ring wear, but the first couple of cranks before a diesel engine fire up, the diesel is actually helping the rings and valves to make a better seal.

Probably in your case, that amount of diesel, or the viscosity of the diesel was not enough to improve the sealing and get the required compression and hence temperatures to spring into life.

Compression test kit? First make sure that the compression kit that you are getting is for a diesel engine. Diesel engines are capable of huge amount of compression, that a kit designed for petrol engines will become permanently damaged.
For diesel engines, a leak down test will probably give you more useful information on where the problem is. If you have a small compressor, you may try to get an adaptor and supply air pressure into the cylinders, and then listen (or feel) where the air is leaking most.. crankcase means rings, exhaust means echaust valve and intake means intake valve is a problem.

Cannot find a rebuild kit for the engine? 1988 90 Hard Top, 19J Diesel Turbo, Shire Blue - Restoration ongoing
2012 90 CSW, 2.2TDCI, Santorini Black
Post #894998 30th Mar 2021 7:40pm
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Tomotomo



Member Since: 13 Feb 2018
Location: Bucks
Posts: 71

United Kingdom 
Thanks for your help.
I have got a diesel compression kit being delivered. It comes with some adaptors so I will try the compressor leakdown and see if I can pinpoint the loss of compression further.
I am.going to try and start it from cold tomorrow and if it fails to start I will know I have to get on with a replacement or rebuild.
I have never rebuilt an engine before. Maybe I should learn.
Thanks again Thumbs Up
Post #895006 30th Mar 2021 8:37pm
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Dinnu



Member Since: 24 Dec 2019
Location: Lija
Posts: 3140

Malta 2012 Defender 90 Puma 2.2 CSW Santorini Black
Below page specifies the compression pressures.

https://www.manualslib.com/manual/1154027/...ml?page=76 1988 90 Hard Top, 19J Diesel Turbo, Shire Blue - Restoration ongoing
2012 90 CSW, 2.2TDCI, Santorini Black
Post #895008 30th Mar 2021 8:57pm
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Tomotomo



Member Since: 13 Feb 2018
Location: Bucks
Posts: 71

United Kingdom 
That's Great thanks! I will post my findings Thumbs Up
Post #895011 30th Mar 2021 9:07pm
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blackwolf



Member Since: 03 Nov 2009
Location: South West England
Posts: 16808

United Kingdom 2007 Defender 110 Puma 2.4 DCPU Stornoway Grey
Tomotomo wrote:
Do we think that all my cranking and subsequently all that diesel spraying into cylinders could have washed the residual oil away on the bores causing the piston rings to loose their sealing abilities?


No, it is most likely that the engine is excessively worn.
Post #895013 30th Mar 2021 9:17pm
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Tomotomo



Member Since: 13 Feb 2018
Location: Bucks
Posts: 71

United Kingdom 
Ok thanks blackwolf.
It started up this morning right away from cold?! As normal !
Post #895042 31st Mar 2021 8:10am
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Dinnu



Member Since: 24 Dec 2019
Location: Lija
Posts: 3140

Malta 2012 Defender 90 Puma 2.2 CSW Santorini Black
Was the engine sitting idle for a long period of time? Perhaps outside?
If yes, it could have simply been a sticking ring, or a little corrosion on the valve/valve seat?
The fewer the cylinders in an engine the more it needs to be in top condition for it to start easily. 1988 90 Hard Top, 19J Diesel Turbo, Shire Blue - Restoration ongoing
2012 90 CSW, 2.2TDCI, Santorini Black
Post #895052 31st Mar 2021 9:13am
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dorsetsmith



Member Since: 30 Oct 2011
Location: South West
Posts: 4554

Drain coolant removing head check valve/valve seat and also with piston down check liners for no scoring rust or glazing and no lip at the top of the liner

If its ok new head gasket set reassemble top end
Post #895057 31st Mar 2021 9:44am
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Tomotomo



Member Since: 13 Feb 2018
Location: Bucks
Posts: 71

United Kingdom 
I guess the machine sat for 3 weeks. Maybe I knocked a small bit of crud into cylinder when doing glowplugs or had injectors out?
Anyway turns out my cheap compression kit adaptor doesn't fit. I am going to use the dumper this weekend and see how it behaves.
Dorsetsmith that is probably exactly what I should do but I have quite a lot of work on at the mo. I think I will keep my eye out for a spare engine and in carry on for now.
Thanks all, a lot of knowledge on this forum Thumbs Up
Post #895505 2nd Apr 2021 7:52am
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