Have you looked at the air flow meter on the air filter pipe?
It can have a bad connection, take cdaly advice and clean the connections with carb cleaner and see what happens, does your engine check light come on at all? check your dizzy cap and the spark plug leads.
Good luck
It can have a bad connection, take cdaly advice and clean the connections with carb cleaner and see what happens, does your engine check light come on at all? check your dizzy cap and the spark plug leads.
Good luck