Ccatt42
XS650 Member
I have an 79xs650 bobber ive been building. I have pods and low backpressure exhaust. I had my left cylinder burning super hot, so i swapped the stock jets for 140 mains, now its still running super hot, but its black sooting now, so tomorrow ill raise the pilot jets up a bit. And lower the main to 137.5, so im kinda at a loss, burning hot means lean but black soot means rich. My right cylinder is burning super cool, after it runs for a few minutes the head pipe is warm at best, so obviously i need to lean that one out a bit, ill swap the spark plugs out tomorrow as well, and gap the new ones correctly any helpful info would be greatly appreciated