I got my ct200u about 3 months ago, everything was running good and a couple days ago it just stopped accelerating, i took the governor out about a month ago and never revved it to crazy limits. I took off the side cover, checked valves. It has compression (around 90psi), spark is good, carb is good( ive swapped it with a good working one). It has no torque when i sit on it but it revs fast with the back tire off the ground. I'm pretty stuck at this point and no clue what could be wrong.
Ct200u low power/no torque
- Thread starter Sylkor
- Start date
- Tags clone gx200 help ct200u
Is it slow rolling up to speed then goes faster top end when you ride it? This can be as simple as a clutch issue or funky carburetor. If the governor is completely removed and you put a governorless throttle those are your culprits. You said it revs, has compression and its definitely not the valves so what your dealing with is load related.
HAYSKILL sells a Gx200 kit on Amazon for about $35 that comes with a carb, coil, plug, kill switch, fuel filter, fuel line, gaskets, air filter, starter cup and pull starter. Make sure to get the one with the cup and pull starter. You'll end up with a decent carb and an good spare parts. You can gap the new coil with a business card so you won't need any special tools. It's the best place to start.
That's interesting. And it would be a good idea to look at the clutch drum. The slip area should look very different from the rest of the drum. What if it is engaging enough no load to spin the back wheel but doesn't engage enough under full load? Another test would be to try running hard under load with the cover off and see if the clutch drum starts changing colors from heat. If it does you know it's slipping.
I had this exact thing happen with a Predator 79cc with a governor removal that I didn't do. The bike accelerated like doodoo and ran fine top end. It was because the clutch was fully engaging too soon, before the engine could produce any real power or torque. It would spin the tire like nothing if you lifted the bike off the ground but not with any weight. I'd say his clutch is stuck but without removing the drum and expecting the spring/shoes.
So i tried changing the clutch with a working one and had the same problem, i opened up the side cover and looks like my camshaft gear slipped on the camshaft, so the timing was off. I moved it over about 15 teeth until it was in line with the valves. Seemed to do the trick the bike is running better than ever.
