So we picked up a CB200T a couple weeks ago for Kayla to ride...I replaced the battery, cleaned the carbs and she's a runner.
The bike idles great and runs perfectly at low RPMs, I can take it for laps around the yard all day with no problems.
When I take it around the block and get it revved up to 5-6k, the left cylinder starts breaking up and misfiring. Once this happens, it'll just about stop running on that side until it cools down. I have had to walk it home a few times, but I can usually keep it running and get it home under its own power if I try hard enough. Then it starts back up like normal once its cooled down for a few minutes. The issue starts happening just about at the same point on every ride. I get about halfway around the block and it starts to misfire and bog, by the turn back onto my street it barely wants to stay running.
So I set out to do the necessary maintenance...set the cam chain tension, set all the valves to .002" as per FSM specs. After valve adjustments I took it for a run and ran into the same problem with same symptoms.
Checked the timing and it was a bit advanced. Adjusted the point gap and then timing and hoped it would solve the problem, but still experiencing the same issue. I also clipped the spark plug lead wire and made sure the cap had a good bite. In fact I tried a brand new NGK cap on the culprit side just to rule that out, same problem.
It really seems to me like a bad coil since it only does it when hot and then will start up again no problem after a few minutes resting. Odd thing is, this bike has a single coil with dual leads, so if it was the coil causing the problem I'd think that the problem would happen on both sides instead of just one (correct me if i'm wrong).
Next step is to double check the points to make sure they are clean. Maybe replace points and condenser before spending the cash on a coil?
The bike idles great and runs perfectly at low RPMs, I can take it for laps around the yard all day with no problems.
When I take it around the block and get it revved up to 5-6k, the left cylinder starts breaking up and misfiring. Once this happens, it'll just about stop running on that side until it cools down. I have had to walk it home a few times, but I can usually keep it running and get it home under its own power if I try hard enough. Then it starts back up like normal once its cooled down for a few minutes. The issue starts happening just about at the same point on every ride. I get about halfway around the block and it starts to misfire and bog, by the turn back onto my street it barely wants to stay running.
So I set out to do the necessary maintenance...set the cam chain tension, set all the valves to .002" as per FSM specs. After valve adjustments I took it for a run and ran into the same problem with same symptoms.
Checked the timing and it was a bit advanced. Adjusted the point gap and then timing and hoped it would solve the problem, but still experiencing the same issue. I also clipped the spark plug lead wire and made sure the cap had a good bite. In fact I tried a brand new NGK cap on the culprit side just to rule that out, same problem.
It really seems to me like a bad coil since it only does it when hot and then will start up again no problem after a few minutes resting. Odd thing is, this bike has a single coil with dual leads, so if it was the coil causing the problem I'd think that the problem would happen on both sides instead of just one (correct me if i'm wrong).
Next step is to double check the points to make sure they are clean. Maybe replace points and condenser before spending the cash on a coil?