So last week here in Wisconsin it was warm enough to ride my 750K8 in to work. I rode in on Wednesday and everything seemed fine that morning the, but the bike kinda stumbled on itself once or twice. Didnt really think too much of it. On the way home that night it happened more, even to the point where it died on me and had to coast off the side of the road to get it started again.
At this point I figured it was just crap in the carbs, and it would either get blown through to continue to act up. well I made it home just fine with a couple stumbles along the way.
The next morning I rode the bike to work and this time I took off and everything seemed fine. As soon as the bike got warm though, it started to stumble and had no power what so ever. I had plenty of gas in the tank. But the bike was really only running on two cylinders. and it ran pathetically on those two. made no power past second gear.
So last night I finally got a chance to take a look. I pulled the bowls off. clean. sprayed the bottom of the carbs with cleaner, put them back on. wouldnt start. decided to check electrical. pulled the tank off, cleaned up all the connects on the stock coil pack, nothing. pulled the plugs, fowled. clean. checked for spark, weak if there. pulled the points cover off.....
The points for 1-4 were more than a 1/16” apart, and 2-3 were pushing on each other. Checked all the screws on the plate, all were tight, really tight. Readjusted my point gap, and the damn thing kicked right off with no problem, easier than it had in the past almost.
My question is, what would cause the point gap to change like this? The bike as ran well all summer long with no problems. I do intend to change the oil as it only ran on two cylinders for awhile.
Any help is appreciated.