I had my 400 serviced about two months ago and haven't been ridding all that much since. My 400 fouled a plug and when I took it out it was black, but not oily. It has a White Brothers slip on and K&N filter and jet kit. It's been about 40-45 degrees when I have been ridding, could the colder temp have caused this?...becasue we all know the 400's don't like to start when it's cold.
Reply With Quote