Marksxs650
XS650 Member
Hey I'm new to this cite also mechanics and I have a big problem. My XS650 is not running great it is backfiring out of the left exhaust it runs rough, it fouls plugs within a week, and it gets worse every time i change the plugs. i tired to fix the ignition timing with a timing light and its still not working. I'm at a loss right now does anyone have an idea as to what is going on?