- Jun 22, 2020
I tried to attach picture but no luck!! Anyway, engine just rebuilt by reputable British shop, it’s a 73 commando 750 rebuilt stock. After a run Saturday...not hard, i noticed a little oil on my left pipe “SS” pipes. I cleaned off thinking just typical oil leaks from things being new and setting in. I ran the bike Sunday and did not. Notice any oil on pipe at all? Ride again today and had to throttle up “rolling hills” to the house and looked down and saw oil on pipe again! Not much but there. Stop bike on driveway and the bottom of the pipe at the exhaust port is wet at the threads and the lock ring. There is no oil on top of threads q-tipped to check for oil and dry. I looked around the base of the head gasket and it looks dry except for a real tiny bubble from the gasket sealant? Lols like they used a copper gasket. The plugs are dry and no oil smoke from exhaust. Any ideas? Thanks.