Other than a thin layer of carbon, it is quite okay for the other piston. They run on tap water so the coolant is in that colour.
Haven’t tear it apart yet as i think it’s not needed, but initial hypothesis is, the bearing of piston 3 wear thin due to lack of oil and smacking the engine head, which caused the top of the piston expand, then seized up when in intake stroke and snap the cone rod, and the crankshaft smack the top half of the cone rod onto the side wall of the block, seize up the whole engine.
Other than a thin layer of carbon, it is quite okay for the other piston. They run on tap water so the coolant is in that colour.
Haven’t tear it apart yet as i think it’s not needed, but initial hypothesis is, the bearing of piston 3 wear thin due to lack of oil and smacking the engine head, which caused the top of the piston expand, then seized up when in intake stroke and snap the cone rod, and the crankshaft smack the top half of the cone rod onto the side wall of the block, seize up the whole engine.