It seems that the 3V has issues with the two piece plugs and carbon build up. What would be good to use in the combustion chamber to keep down the build up of carbon and would it work on the carbon that is already built up? If there is a product that would help melt away the already existing carbon it would seem that if you ran it for a while it would aid in plug removal at a later date.
For those that have changed out your plugs, what are you reinstalling?
For those that have changed out your plugs, what are you reinstalling?