Hi everyone Had the bike cbr rr250 serviced about 4 months ago and it has been starting fine untill 2 weeks ago now it wont start. the baike has only been riden 5 - 6 times since serviced but started at semi regular intervals. Today i took the plugs out and gave them a wipe and clean they were black at the ends and pop them back in still no go!!!! The battery also got changed. It trys but nothing. Should i just by new plugs and it should start??? Why dont spark plugs last very long?? Anyone have any ideas??? please!!!!!