Low power, white smoke at long idle.

ADDICTED MOTORBICYCLES · #1 (**permalink**) 09-18-2009, 06:46 AM

Hello. I have a problem, I'm not sure if I can post videos here, but here is where videos can be seen. I suffer a lack of torque with my CH80 69.9cc engine. It struggles to climb in rpms, and slowly fades in power on uphills. you can see what I mean here, on the videos labeled work to home. Pictures by ADDICTED-BICYCLE-CUSTOMS - Photobucket Also, when I sit at a red light, slowly there is more and more white smoke coming out of my muffler, it gets pretty bad. lol. I'm running 25:1 mix, the engine has been broken in with 20:1 mix. It's two years old, been repaired once by magneto change, and top end rebuild. Rebroken in after repairs in second year. I'm running a 48t sprocket, and in the videos, anytime I'm going uphill, I'm at full throttle. You'll see what I mean, sorry the video's at night. lol. Hope someone can help, as I don't really know what is wrong. Thanks everyone!

stv1jzgte · #2 (**permalink**) 09-18-2009, 09:11 AM

Haha sweet vids i watched part2 you were on it! for a 48tooth that thing was pingin along. clean note (noisy bastard) no missing it could just be a set of rings?

**Bikeguy Joe** · #3 (**permalink**) 09-18-2009, 09:13 AM

Re-ring and then de-carbonize the piston top, cylinder head and exhaust.

cobrapowered1 · #4 (**permalink**) 09-18-2009, 09:51 AM

This is normal at that oil to gas mix and going uphills. These engines are not small block Chevy's. LOL. This is why I am modifying mine for. I live in the mountains and its up and down all day. Bike Joe may be right about changing rings and checking what other issues you may have compromising compression like I am right now with crank seals.