rich_mcd
XS650 Enthusiast
Hello again,
I don't know where to exactly start so I will start with what I found and the issues im having. The left hand (while sitting on the bike) cylinder seems to be missfiring. It gets warm but not hot, and the plug ends up oil fouled and damp.
I have a 1980 xs650, stock carbs, stock ignition, stock 2-1 exhaust with an emgo shorty muffler, brand new EVO2 8 cell ballistic battery.
I took the carbs apart recently and cleaned every orifice and piece of varnish I could see. Put in new o-rings, checked the jets (all stock) replaced the gaskets, checked the floats for holes or leaks and adjusted the float heights as per the manual.
I changed the oil to rotella 15w40, and in order checked the cam chain tensioner, then set valve clearances. The bike will kick over pretty easily (starter seems to bog though, which is weird, another topic all together) It will run ok but the left side gets warm, never hot.
I switched plug wires to the other side and it didn't follow the wires, still the left cylinder fouling the plugs. Checked the compression and it was about 140-150 (took both plugs out, disconnected power and kicked it about 5 times)
Does this sound like an ignition problem, carb problem or piston issue? I was planning on doing the PMA next season and changing the ignition at the same time with either points/pamco or boyer but maybe I need to do the ignition first?
Sorry for the novel, but I am so baffled by this bike!!!!
I don't know where to exactly start so I will start with what I found and the issues im having. The left hand (while sitting on the bike) cylinder seems to be missfiring. It gets warm but not hot, and the plug ends up oil fouled and damp.
I have a 1980 xs650, stock carbs, stock ignition, stock 2-1 exhaust with an emgo shorty muffler, brand new EVO2 8 cell ballistic battery.
I took the carbs apart recently and cleaned every orifice and piece of varnish I could see. Put in new o-rings, checked the jets (all stock) replaced the gaskets, checked the floats for holes or leaks and adjusted the float heights as per the manual.
I changed the oil to rotella 15w40, and in order checked the cam chain tensioner, then set valve clearances. The bike will kick over pretty easily (starter seems to bog though, which is weird, another topic all together) It will run ok but the left side gets warm, never hot.
I switched plug wires to the other side and it didn't follow the wires, still the left cylinder fouling the plugs. Checked the compression and it was about 140-150 (took both plugs out, disconnected power and kicked it about 5 times)
Does this sound like an ignition problem, carb problem or piston issue? I was planning on doing the PMA next season and changing the ignition at the same time with either points/pamco or boyer but maybe I need to do the ignition first?
Sorry for the novel, but I am so baffled by this bike!!!!