MGZS spark plugs

Hi everyone, just a thought, I know I need new spark plugs - I'm just wondering if I have a slight head gasket problem or leaky valve?



When I removed my old plugs for. Clean up etc and to shorten the gaps again, I noticed that one of plugs (on No.1) was oily - the others bone dry. Could this indicate a slight problem with this cylinder valve only? On closer inspection there are slight watery/Mayo deposits inside of the coolant tank, although the level does not drop, so I'm wondering if there is a Igot leak on No.1 cylinder? Any suggestions? I HAVE read that you can buy a liquid to simply pour down with the plug removed, which fixes small problems - does anyone recommend this or has previously tried it before?



Any advice as always would be perfect - many thanks again :-)

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