I know we have been over this before but I couldn't find the original
post so bear with me. Put a rebuilt coil in with new wires, (thanks
casey), new plugs, changed oil and filter, cleaned everything. My 71
Z600 ran great for abouth eight minutes then would run real rough once
I got up to about 30 mph. Points look good. Pulled a plug and it was
pretty black. Could this be a chain jump or what. I'm almost out of
spots to beat my head on. Thanks for any help.
Bill in Missouri