Originally Posted by BillyD
Well, to my point about connections without any dielectric grease...here's one that I missed on my 640.
The 640 developed a miss and, ultimately, I traced it to where the ignition wire connects with the plug boot.
I don't think that is corrosion billy. Their has been a gap develop between those contacts and the spark has had to jump between them. This is the result of that. It does look like water damage but it is not. I'm sure someone could explain this, and the process that causes that result.