zmikecuber
New Member
- Local time
- 9:19 AM
- Joined
- Jul 25, 2016
- Messages
- 17
I have a 66cc 2 stroke engine. The carb is the red NT speed carb. This one: http://www.bikeberry.com/2-stroke-speed-carburetor.html
All was running good until recently, it started sputtering at seeming mid-range rpms. In addition, occasionally when I let off the throttle, it continues revving and then comes down. Also, it jerked while letting the engine run without pulling the throttle.
Found that my exhaust gasket had blown, so I replaced that. I also disassembled the carb, cleaned it out with carb cleaner and re-assembled it. Also, tried to put electric tape around where the carb clamps on, because I read that a leak there could cause the engine to continue revving after the throttle was let go.
Put it all back together, put in a 32:1 fuel to oil ratio, and ran it.
It jerks like hell. It will rev up really high, and then go really low even when idling with the clutch disengaged. Then it kills. Giving it throttle causes it to rev up and down. It's reaaaaally bad.
Anyways, does anyone have some suggestions? I checked and fuel is going to the carb. Getting good spark. My gut tells me that something's up with the carb.
All was running good until recently, it started sputtering at seeming mid-range rpms. In addition, occasionally when I let off the throttle, it continues revving and then comes down. Also, it jerked while letting the engine run without pulling the throttle.
Found that my exhaust gasket had blown, so I replaced that. I also disassembled the carb, cleaned it out with carb cleaner and re-assembled it. Also, tried to put electric tape around where the carb clamps on, because I read that a leak there could cause the engine to continue revving after the throttle was let go.
Put it all back together, put in a 32:1 fuel to oil ratio, and ran it.
It jerks like hell. It will rev up really high, and then go really low even when idling with the clutch disengaged. Then it kills. Giving it throttle causes it to rev up and down. It's reaaaaally bad.
Anyways, does anyone have some suggestions? I checked and fuel is going to the carb. Getting good spark. My gut tells me that something's up with the carb.