i have a derbi senda 50cc w plate 2000, basiclley i was out onit and it sputterd and cut out so i replaced everything the spark plug, the fuel lines fuel tap just to make sure, but it still doesent start , now again it starts and runs for maybee 5 miniutes then cuts out, i have had the carb off and cleaned it with carb clean , still no good , i have noticed the pipe that lets the petrol into carb from the fuel tap some times i can blow through it other times its blocked , p.s the bike was sitting for 7 years,thanks for any help
