I have a JD 317 with a 2 cyl. kohler engine. It is the updated version with the new oil pump design. (1980s) Anyway, I put new pistons and rings in it about 4 years ago. It was fine until last summer. It started to smoke so bad it would burn your eyes and after about 1/2 hour of mowing I have to stop and put oil in it to continue. I finished the summer with it like that.
The engine probably needs rings and etc. again but before I tear into it I was wondering if the crankcase vent and the little rubber valve inside it could cause the engine to burn oil. Also is it common for this engine to normally blow oil out of the fill tube when you remove the oil cap while the engine is running? I was told this type of engine has positive/negative crankcase pressure. Is this true? Any reply is welcome since the grass is starting to grow.
The engine probably needs rings and etc. again but before I tear into it I was wondering if the crankcase vent and the little rubber valve inside it could cause the engine to burn oil. Also is it common for this engine to normally blow oil out of the fill tube when you remove the oil cap while the engine is running? I was told this type of engine has positive/negative crankcase pressure. Is this true? Any reply is welcome since the grass is starting to grow.