Hey all, recently me and my dad chucked a 66cc engine on a mountain bike, ran good for a week, then I think the problem started ever since I tried riding it without the spark plug, I didn't realise I took it off and tried starting it for a few mins and it was just starting but not going obviously. Well im not sure if that did it but it takes me around 5-10 mins to get it started now I have to ride it around dropping the clutch then riding it without holding the clutch in, my mates say the clutch wasn't installed properly or something to do with clutch pads thinking the clutch is connected or something , my dad says he installed it properly without a doubt and we have bought a new spark plug didn't change a thing, dads thinking its the magneto but no idea. Its weird everything seems to be fine the wires are connected properly it just takes me so long to start and frustrates me when my mates just take off in 2 seconds and have to wait around for me haha. Any ideas?