I was riding my B Meteor yesterday and, for 40 miles, it ran flawlessly. I had been rolling along at 55 mph and was cresting a slight rise (one I had crested many times before) and the engine started to lose power. It didn't seem to want to go faster than 40-45 mph. I was afraid I wasn't going to get home or that, if I had to stop at a traffic signal, it would stall and not restart. I did have to stop at a few lights and it idled fine and pulled away from the lights as normal. I made it home (about 10 miles) and the bike seemed to behave normally under acceleration. I was on city streets and didn't have an opportunity to take it back up to 55 mph.
When the loss of power happened, I opened the second petcock and opened the full cap - neither action had any effect.
This morning, I pulled the plug (KLG FE75) which looked fine. I checked compression, which was normal. I removed the cover over the auto advance unit and the bob weights seemed to move freely. I did notice that one of the tabs that limit movement of the weights was missing (see photo). However, one of the remaining tabs still seemed to be doing the job of limiting the movement of the bob weights. Also, looking at the movement of the weights, it looked like the missing tab, had it been present, would've prevented the weight from making its full range of motion.
I also removed the float bowl on the Amal concentric carb and took a look around. No grit in the bowl or blocking the jets.
Any comments/thoughts/advice about the loss of power or missing tab would be appreciated.
When the loss of power happened, I opened the second petcock and opened the full cap - neither action had any effect.
This morning, I pulled the plug (KLG FE75) which looked fine. I checked compression, which was normal. I removed the cover over the auto advance unit and the bob weights seemed to move freely. I did notice that one of the tabs that limit movement of the weights was missing (see photo). However, one of the remaining tabs still seemed to be doing the job of limiting the movement of the bob weights. Also, looking at the movement of the weights, it looked like the missing tab, had it been present, would've prevented the weight from making its full range of motion.
I also removed the float bowl on the Amal concentric carb and took a look around. No grit in the bowl or blocking the jets.
Any comments/thoughts/advice about the loss of power or missing tab would be appreciated.