the girlfriend just picked up a 360 for her first bike. 6k on the clock. Ran beautifully on the test ride, but about half way home on the freeway, it started blowing oil out of the breather tube (top of the head). Since I broke my foot, we had a friend riding it, and it was very apparent to me while following him. By the time it pulled in my driveway 20 miles later, the right side of the rear tire was covered in oil and it left a nice puddle.
Compression test showed 145 (give or take a couple psi) on both cylinders. Granted, the oil was NASTY. I changed the oil, ran it for a couple miles, changed it again (still BLACK), ran it for a few miles, changed it again (still BLACK), changed it again, and it finally came out looking fairly clean. At this point, I think I should have all of the old crap out of the motor.
Since then I have synced the carbs, and completely fucked up the idle mixture. It is now running rich enough to bog unless you throw some revs at it. Give me a break. I'm still working with a broken bone in my foot.
But I got the girl going in a parking lot so she could start riding and noticed some oil dripping from the vent tube again. I figured with the compression numbers looking decent, it shouldn't be rings. But then what? Valve seals seem very unlikely. What am I over looking? Or am I just expecting too much given that its only gone 5 miles since the oil change(s) and may still have dirty oil keeping the rings from sealing well?
Compression test showed 145 (give or take a couple psi) on both cylinders. Granted, the oil was NASTY. I changed the oil, ran it for a couple miles, changed it again (still BLACK), ran it for a few miles, changed it again (still BLACK), changed it again, and it finally came out looking fairly clean. At this point, I think I should have all of the old crap out of the motor.
Since then I have synced the carbs, and completely fucked up the idle mixture. It is now running rich enough to bog unless you throw some revs at it. Give me a break. I'm still working with a broken bone in my foot.
But I got the girl going in a parking lot so she could start riding and noticed some oil dripping from the vent tube again. I figured with the compression numbers looking decent, it shouldn't be rings. But then what? Valve seals seem very unlikely. What am I over looking? Or am I just expecting too much given that its only gone 5 miles since the oil change(s) and may still have dirty oil keeping the rings from sealing well?
