Boxy
XS650 Member
Greetings all,
Just got a 650B for my son. Has been restored. Engine has had a top end rebuild-1st oversize, all new seals, cam chain, valves lapped, carb kit etc. Not by me but by previous owner-a fitter and turner, so I am assuming all good. BS38 carbs-XS pod filters and K&N rain socks, NOS stock exhaust. Pilot jet 42.5, main 130.
Problem:
Can't sync carbs to get motor to run well on left cylinder.
Air screw when fully seated still allows left cylinder to run----behavior indicates that it is running rich.
I have cleaned the carbs, reset the float levels etc etc.
I have replaced the condensers as condenser test showed sparking on left points.
Ohms tested coils-OK there.
Cannot seem to cure the running rich at idle symptom on the L cylinder.
Pops and splutters with puffs of white smoke from that pipe-does not smell of oil.
Any ideas where to from here? Gotta get this old girl running 100%.
Just got a 650B for my son. Has been restored. Engine has had a top end rebuild-1st oversize, all new seals, cam chain, valves lapped, carb kit etc. Not by me but by previous owner-a fitter and turner, so I am assuming all good. BS38 carbs-XS pod filters and K&N rain socks, NOS stock exhaust. Pilot jet 42.5, main 130.
Problem:
Can't sync carbs to get motor to run well on left cylinder.
Air screw when fully seated still allows left cylinder to run----behavior indicates that it is running rich.
I have cleaned the carbs, reset the float levels etc etc.
I have replaced the condensers as condenser test showed sparking on left points.
Ohms tested coils-OK there.
Cannot seem to cure the running rich at idle symptom on the L cylinder.
Pops and splutters with puffs of white smoke from that pipe-does not smell of oil.
Any ideas where to from here? Gotta get this old girl running 100%.