Quote:
Originally Posted by Dormermike
Oil gets into plugs in a number of ways
Overspill from top ups
Vapour leak from oil cap seal which then dribbles down to plug wells
Cracked cam cover leaking oil.
All this happens around cylinder 3 iirc
The area under cam cover and around plugs and coils should be oil free and largely spotless
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Top ups - no spill 100%. Oil cap seal (entire cap actually) I replaced weeks ago.
Going to spot clean it all including spark plug holes and see if it remains clean or not.