I am new to Kawasaki and new to the forum but not new to ATV's. I have a 1998 Bayou 400 4x4. While getting ready for a ride today, it would not start, no spark. I talked to a friend who said check the CDI. He said give it a good crack on the frame and see what happens. It started and ran all day today with no problems. My question is, is this normal when this thing is bad?