Hello I am having issues with my motor redlining and over revving only when I pull in the clutch. I have tried everything to fix it. Checked for vacuum leaks around the carborator and intake and put gasket seal everywhere, I tried changing out the carburetor, I messed with the throttle cable it isnt sticking. The bike runs fine when the clutch is out but as soon as I pull the clutch in it starts to redline and if I dont kill the motor it would blow itself up. What am I doing wrong? Its a 80cc 2 stroke motor. I didnt originally have this problem.
Guys im stuck and need your help
- Thread starter Jdmassie
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- motor bicycle
Chainlube
Well-Known Member
What did you do before it started to do that?
G
Guest-10706
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I put on a new carb
G
Guest-636891
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How Do I know if it’s shot
FiftyCali
Member
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- Aug 20, 2020
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Had same problem. I went around and tightened all the bolts I could head, exhaust, intake, also changed fuel line. And my gas cap seal was bad. After fixing this things the problem was fixed. Has to adjust carb screw as well. Does sound like an air leak somewhere.
Chainlube
Well-Known Member
Sounds exactly like the issue I had with my carb. The slide had some casting flash on it and wouldn't let it go all the way to the bottom, then when I sanded it all off the return spring was too short. I stretched the spring and adjusted my idle and it's been great since.
YetiWoodz
Well-Known Member
You can try loosening the idle screw as well, as FiftyCali mentioned. That will bring down the idle rpm. But its probably a different issue.
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There’s 3 things it could be air leak or carburetor slide.Turn idle screw all the way out then put carburetor top slide in. Then check all cable ends to throttle see if there not in right spots and not hung up on ends. Then adjust idle screw.
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