Hello all,
First time in the forum and I am looking for some guidance. I recently purchased a RM-250 (1996) that was very hard to start without catching it in gear on a hill. I did a compression test last night on a cold motor and got 60 PSI, next I added oil to the cylinder and did another compression test and got a reading of 90 PSI. Again these reading were off of a cold motor. I know the prior owner very well and the bike was only ridden four times since the last piston change (it was overheated once). Also after the last piston change the bike was hard to start. After pulling the jug and piston I did notice the distinct lines from the honing process at the bottom of the sleeve and the piston appeared relatively perfect. Finally, there was a large amount of carbon on the head and dome of the piston. A Little carbon/blow by between the rings. Teh piston is an oversized Weisco. Can anyone lead me to a easy starting bike. Does it just need new rings or should I also check the reed valves?
Thanks
Tom
First time in the forum and I am looking for some guidance. I recently purchased a RM-250 (1996) that was very hard to start without catching it in gear on a hill. I did a compression test last night on a cold motor and got 60 PSI, next I added oil to the cylinder and did another compression test and got a reading of 90 PSI. Again these reading were off of a cold motor. I know the prior owner very well and the bike was only ridden four times since the last piston change (it was overheated once). Also after the last piston change the bike was hard to start. After pulling the jug and piston I did notice the distinct lines from the honing process at the bottom of the sleeve and the piston appeared relatively perfect. Finally, there was a large amount of carbon on the head and dome of the piston. A Little carbon/blow by between the rings. Teh piston is an oversized Weisco. Can anyone lead me to a easy starting bike. Does it just need new rings or should I also check the reed valves?
Thanks
Tom