Hi Everyone,
I have a 74 CL360 with mikuni vm28's and a pamco electronic ignition. Just had the bike in the shop for a couple of weeks (problems getting the pamco to work and had them install the vm28's for me) and when I got the bike back she was up and running again. The day after I got the bike back I noticed the idle was set pretty high (bike was idling around 3k rpm) so I adjusted the idle screws on the vm28s to about 4 turns out and got the idle down to about 1.2-1.4k rpm (which I believe is spec).
The problem I'm having now is that the right cylinder is cold on idle, but warms up when I take the bike out for a ride. At idle, the right cylinder is blowing clear exhaust but its cold and the exhaust pipes don't heat up like the left cylinder. After riding for about 5 min, the right exhaust warms up, but the idle speed increases to about 2k.
I've checked compression on both cylinders (right ~ 140, left ~135 but this was without throttle open), verified the timing is correct for left and right cylinders, changed the plugs, and adjusted the cam chain tension. I've also made sure fuel is adequately flowing from the tank through the petcock to both carbs. Does anyone have any ideas on what could be going on on the right cylinder? I know my compression numbers are out of spec and I'm planning on doing a top end rebuild later this winter, but I feel like if the right cylinder is warming up after riding and the left cylinder is running fine, compression shouldn't be causing one cylinder to be cold at idle, especially if that cylinder has better compression than the one that's firing? Thanks for your help.
I have a 74 CL360 with mikuni vm28's and a pamco electronic ignition. Just had the bike in the shop for a couple of weeks (problems getting the pamco to work and had them install the vm28's for me) and when I got the bike back she was up and running again. The day after I got the bike back I noticed the idle was set pretty high (bike was idling around 3k rpm) so I adjusted the idle screws on the vm28s to about 4 turns out and got the idle down to about 1.2-1.4k rpm (which I believe is spec).
The problem I'm having now is that the right cylinder is cold on idle, but warms up when I take the bike out for a ride. At idle, the right cylinder is blowing clear exhaust but its cold and the exhaust pipes don't heat up like the left cylinder. After riding for about 5 min, the right exhaust warms up, but the idle speed increases to about 2k.
I've checked compression on both cylinders (right ~ 140, left ~135 but this was without throttle open), verified the timing is correct for left and right cylinders, changed the plugs, and adjusted the cam chain tension. I've also made sure fuel is adequately flowing from the tank through the petcock to both carbs. Does anyone have any ideas on what could be going on on the right cylinder? I know my compression numbers are out of spec and I'm planning on doing a top end rebuild later this winter, but I feel like if the right cylinder is warming up after riding and the left cylinder is running fine, compression shouldn't be causing one cylinder to be cold at idle, especially if that cylinder has better compression than the one that's firing? Thanks for your help.