So it seems that it had been burning oil, again not excessively. Most likely through the exhaust valve. Either it’s not seating fully or a seal has gone. It was fairly easy to clean up most of the carbon on the top of the piston so I could then see that it was 0.75 over-size but what does ‘13’ reference? By moving the piston to the bottom I could see four score marks. They are not deep, I cannot feel […]
