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| Snazz Member Since: 01 Nov 2020 Location: Cumbria Posts: 4   
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Hi badger110,
I've removed a couple of the inlet manifolds on pumas recently from low ish and high mileage vehicles and they've all been pretty similar to your images also none of them had running issues.I did have a pic of one but i can't find it Sorry. |
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15th Nov 2020 2:14pm |
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| LR90XS2011 Member Since: 05 Apr 2011 Location: bickenhill Posts: 3643 
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isnt that just the normal piston blow bye and EGR soot all mixed together DEFENDER 90 TDCI XS,
I hope everyone is well and your land rovers make you happy Last edited by LR90XS2011 on 15th Nov 2020 6:10pm. Edited 1 time in total |
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15th Nov 2020 4:26pm |
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| blackwolf Member Since: 03 Nov 2009 Location: South West England Posts: 17432 
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Sadly that looks entirely normal to me, and I suspect you'll only improve it by fitting a Provent or catch can and ideally disabling the egr.
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15th Nov 2020 4:39pm |
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| Badger110 Member Since: 06 Feb 2018 Location: South hams Posts: 1039 
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It is good to hear it's to be expected, if a little alarming first time seeing it!
Any tips of geting rid of it? Any specific cleaning products likely to work? Tia |
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15th Nov 2020 9:48pm |
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| Snazz Member Since: 01 Nov 2020 Location: Cumbria Posts: 4
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Its not easy to remove all the sludge mess but in the past I've used alloy wheel cleaner and a stiff brush left to soak for a while then steam clean. Also some new seals wouldn't hurt it while you've got it off
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16th Nov 2020 7:39am |
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| MatLandy Member Since: 11 Sep 2020 Location: Paris Posts: 184  
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This thick, cancerous, caked-on sludge is the combined result of EGR gases mixing with the thin film of oil originating from the crankcase breather which is plumbed back into the air intake before the turbo.
No matter how you look at it, it is a messy job to clean. I personally used a copious amount of break cleaner, numerous toothbrushes and finished at the jet wash station. I also changed all seals for new (8 x LR018370 and 1 x LR004404S) before refitting. A new MAP sensor is also to be considered as being caked with the same gunk. Once the inlet manifold is refitted, I treated the engine with Liqui Moly 5168 (Pro-Line intake System Cleaner) to further reduce the gunk remaining within the engine block that is not easily accessible to remove manually. I've added a picture below taken with a small inspection cam of one of the intake valve, I don't think the added weight of gunk can be good for it to operate at its best. As I don't want to be doing this job again, I have the EGR closed (through remap + blanking plate) and a Provent fitted. All this made no noticeable difference to how the engine runs, but in the long term I am confident it will help preserving it. /Mat before:  Click image to enlarge after: Click image to enlarge intake valve (sorry, very dark and low resolution): Click image to enlarge |
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16th Nov 2020 8:58am |
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