I have been trying to figure out why my grizz won’t start for weeks now. To be specific it will turn over but won’t fire up. I just bought a whole new carb for it and fuel petcock. Adjusted the intake valves (haven’t gotten to exhaust valves yet). I have good compression and the spark plug sparks when out and turned over. I have read on forums that some guy just put a new spark plug in and it fires right up. How true that is i don’t know but i will find out tomorrow when i buy a new plug. If the exhaust valves we out of proper clearance would it not start at all? Any feed back would be greatly appreciated.