It could be that the filter leak is oil running down off the filter that has leaked elsewhere - such as from the spot at the back?
I had a great deal of trouble with the half-moon at the back, untill I found that LR had fitted the wrong gasket when the head was replaced. There are two, and one has a larger half-moon.
Also, when you seal this with silicone, you must ensure the drain which is just in front of where it seals (under the cover) is not sealed with silicone!
To put the cover on properly, you really need to remove the engine rear acoustic cover, I got to this with a 10mm socket held in multi grips as a normal 1/2" drive wouldn't fit. I also degreased the rear of the engine and wiped a bead of silicone around what feels like a welch plug or rubber grommet that is back there.
With the filter leak, despite what it says on the packet, I have always tightened the filter with a strap wrench as it is too hard to get a good grip on it by hand.
Dave
P.S. in regards to the tappet cover gasket - I think if the "thingy" that fits on top of the head (spacer between tappet cover and head)has been updated such as when fitting a new head perhaps, the gasket may not be the type listed as per the vehicle VIN as the "thingy" it fits may have been upgraded to the later one.
Last edited by davros; 18th November 2009 at 03:02 PM.
Reason: additional info
1974 Military Lightweight Landy --- Some dementia at 50 years old
2000 Disco series 2 now sadly moved on!
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2021 Mazda BT50 or is that DMax?
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