i have a 2000 f4 that is a project bike for my girlfriend. well when i bought the bike it ran and started fine then i changed oil and spark plugs and i started it and ran it a min and was reving the rpms up to see how it sounds and it died and now wont start it just goes click click click then every now and then fires but no start. i ordered new coils to put in but does anyone have any ideas? has to be fire, gas or air but im a little stumped