There are several things that could cause a cracked piston. Some of these things include a casting issue, contact with a valve, a bad wrist pin, excessive heat, or it could be hydro-locking.
Either worn valve guides, worn rings, or a holed or cracked piston.
it would be better to buy a piston kit. It wouldn't be a good idea to try to fix a cracked piston.
you either have bad piston rings or your valves are staying open. Other Possibilities: Blown head gasket; cracked cylinder head; cracked piston.
Blown head gasket, cracked head or cracked block. Busted head gasket; cracked cylinder head; broken piston; or bad oil pan gasket if driving thru high water.
Burnt Valve, worn piston rings, blown head gasket, or cracked head.
It will make it imossible to start. 2-strokes depends on a tight seal between over- and underside of the piston. A cracked piston will also disintegrate on high revs.
Rod bearing, cracked piston, loose wrist pin, etc.Rod bearing, cracked piston, loose wrist pin, etc.
Defective spark plug, plug wire, burnt valve, busted piston, bad rings, blown head gasket or cracked head.Defective spark plug, plug wire, burnt valve, busted piston, bad rings, blown head gasket or cracked head.
bent valve, burnt valve, stuck valve, broken piston ring, cracked piston, cracked head, blown head gasket.
Cracked block, worn-out rings, hole in a piston, valve-stem seals, and several other less expensive things if you're lucky.
cracked oil ring on piston
White smoke, could mean damaged head gasket or cracked head. Blue smoke, most likely a broken piston ring.