I HACE A 20 YEAR OLD MERC WHICH HAS ALWAYS BEEN HARD STARTN, EVEN AFTER I HAVE RUN IT FOR 30 MINUTES IT TAKES 10 PULLS TO GET IT RESTARTED, TOOK IT OUT AFTER SITTING FOR 6 MONTHE AND COULDNT GET IT STARTED, SO SHOT SOME STARTER IN THE CARB AND IT RAN FOR 2 OR 3 SECONDS, UNTIL THE STARTED BURNED...