Scooter struggles-

I've spent several evenings last week and most of the weekend struggling with my scoot. It had become unreliable at idle, stalling at traffic lights and bogging down when trying to accelerate from idle. This problem was really an issue since I commute through a busy part of town everyday and sitting at traffic lights is a regular part of my commute.

I blamed it on the carburetor and I've had it on and off the engine a dozen times in the past week. The problem seemed to be that it would start, run, idle and rev up properly until the engine warmed up. Then the rough idle and bogging would return after 10 or 12 or 15 minutes of running. But once revved up, the engine ran beautifully and it seemed to have all the power it is supposed to have.

I adjusted the valves. I changed pilot jets richer and leaner, I tried 2 other carburetors, all to no avail. Once I figured out that the problem remained even with a different carburetor installed, I about ruled out a fuel problem entirely.

Now I've got a new coil to install tomorrow night. Darren at Quad & Cycle suggested that the coils can be squirrely and unreliable and heat sensitive. Alan at PowerSportsFactory suggested the same thing through an email today.

So I guess I'll try a new coil and see if that solves my bogging and stalling problem. But its too late tonight.