r/klr650 • u/red8reader • 3m ago
Power Issue Under Load Erratically
Looking for similar experiences and solutions.
I had an issue on a recent trip. The bike would stutter on hills and under a heavier load, like it wasn't getting fuel or the spark plug was fouled.
When I would shift from 5th to 4th around 5k, it would stutter. It would do it in any gear and around the 5k mark. It would last for about 3 minutes, then the bike would return to normal. During that time, I could run the bike at about 4500 rpm (65/70). It would stutter but keep going.
What I tried:
-Choking the bike when it did this - no change
-Stopped and opened the gas tank to check the tank valve - no change
-Used reserve on the petcock setting - no change
-Reset the plug wire and checked for a loose plug.
-Added a cleaner at half a tank.
What I think I should look at first:
-Petcock diaphragm - I think I should just replace or delete.
-New plug wire
-Change vacuum lines
-Carb service (I don't think it's the carb)
Other things are maybe the coil or some issue where an electrical part is getting too hot. But I have a hard time considering this, as I can ride the bike until it stops. I would stop at first and let it cool, then I just kept riding to see if it would change and it would go away.