I have an '03 Yamaha TTR-125 that is having issues. It will start and barely idle after about 15 kicks. When it is idling it's blowing a tremendous amount of blue smoke (oil) out of the exhaust.
When I let off the clutch in 1st gear it won't move any ... it's almost like it's still in neutral. I've tried starting off in 2nd gear, but have the same results. I was originally having issue's just getting it to crank up, but I adjusted the exhaust valve and it now at least will crank. It seems to rev fine, but I haven't rev'ed it to high either.
The only other thing I know is that I tried to start it by push starting it down a hill. But when I popped the clutch in 1st, 2nd, and 3rd ... it wouldn't even catch. It felt like it was in neutral.
I just did a compression test today, and after four kicks it read 110 psi. I'm not sure what the spec's are, but that sounds low. I went ahead and removed the motor because I figured it was the rings. After disassembling everything, I noticed a lot of carbon build up on the piston head and valves. The rings are fine, and the piston is fine with no holes or cracks. The only other thing I can think of is the valves, but I don't know what to look for there. Any ideas?
I also drained the oil and I can smell gas in it. The oil is a greenish color rather than a black or brown.
If something is wrong with the valves, would that contribute to it not moving any while it's in gear, or is that a seperate problem?
When I let off the clutch in 1st gear it won't move any ... it's almost like it's still in neutral. I've tried starting off in 2nd gear, but have the same results. I was originally having issue's just getting it to crank up, but I adjusted the exhaust valve and it now at least will crank. It seems to rev fine, but I haven't rev'ed it to high either.
The only other thing I know is that I tried to start it by push starting it down a hill. But when I popped the clutch in 1st, 2nd, and 3rd ... it wouldn't even catch. It felt like it was in neutral.
I just did a compression test today, and after four kicks it read 110 psi. I'm not sure what the spec's are, but that sounds low. I went ahead and removed the motor because I figured it was the rings. After disassembling everything, I noticed a lot of carbon build up on the piston head and valves. The rings are fine, and the piston is fine with no holes or cracks. The only other thing I can think of is the valves, but I don't know what to look for there. Any ideas?
I also drained the oil and I can smell gas in it. The oil is a greenish color rather than a black or brown.
If something is wrong with the valves, would that contribute to it not moving any while it's in gear, or is that a seperate problem?