The plugs foul. very sooty after a few feet down the road. It seems to be electrical because it has progressivly gotten worse, even if I put in new plugs. At first it was cutting out at highway speeds and then recovering itself. Now I can't go 100 yds without it stalling. It fires right back up with a big backfire, goes 100 yds and stalls again. It idles fine, no problem when I rev it, but under load it dies. I know it sounds like coils but they checked out ok at the dealer. My gas/air set up is the same as I've always had it with no problems.
