I have a broken Spark plug in a 2SZFE engine. Oil level is not changing. Does it means the piston is safe?
There’s a spark plug part in the first cylinder because previous owner chose a low cost model not adapted to higher temperature of lpg. There’s a sealing problem on exhaust but not on admission.
The cylinder head might be damaged, but since there’s no specific sound (the engine can run on 3 cylinder) and the oil colour doesn’t change and the oil level doesn’t change, is it safe to assume the cylinder or piston ring don’t need to be replaced ?