Hi Stewart,
Years ago I had problems of "tracking" around the spark plugs due to water ingress. My solution, after a conversation with a motorbike friend and the following info from the net was.......a trip to a local trade electrical store for a tube of dielectric grease.
The net info, part of a very long information paper, stated.....
"In single high voltage connections, such as spark plug boots or other high voltage connectors (x-ray, neon sign, or HV power lines), only pure dielectric silicone greases should be used. Generally a light coating or wipe is all that is required. Dielectric grease will actually increase voltage breakdown across insulators, especially in the presence of moisture. Never use or allow a metalized grease around HV connections"
So, based on this I do not use "conductive" or other type greases around my plugs. But, I'm no expert and will stand corrected.
In addition I made a plate to fit on top of the engine a la Dave W. Not so elegant as his but I also attached a waterproof fabric "skirt" along the back edge to cover the "electrical bits" that are located at the back end of the engine.
I appreciate a piccie would help. I have not yet mastered doing that but will attempt putting some on the photo forum if it helps, or send me a pm or if someone can put them on for me.
If doing yourself you will need a pair of spark plug boot pliers otherwise you may destroy the plug leads if you are not careful. Readily available and cheap.
Regards everyone
Salmo
70th Anniversary