I've been having all sorts of problems with my 2 stroke. Now that I've got it running after 2 weeks of repair, It won't go. It will start and idle great. I can rev it when it's idling. When I release the clutch my bike won't move. I lifted the rear tire and released the clutch. It will spin very slowly for about 3 seconds and then die. If I throttle it with the clutch out it will immediately die. I can not figure this one out? I want to go for a long ride soon I only have 25miles on it.
No power to back tire?
- Thread starter jmcgahran
- Start date
sounds like you have some sort of binding issues with your clutch assembly. Norman did a post on how to remove the clutch assembly.
Remove the clutch cover and see if their is anything lodged in the gears but wait then your motor wouldn't stay running. Has to be something in the clutch assembly.
http://motorbicycling.com/f39/bicycle-engine-total-tear-down-391.html
http://motorbicycling.com/f39/motor-bicycle-clutch-301.html
Could be a bad bearing. Does your rear tire move on it's own?
Remove the clutch cover and see if their is anything lodged in the gears but wait then your motor wouldn't stay running. Has to be something in the clutch assembly.
http://motorbicycling.com/f39/bicycle-engine-total-tear-down-391.html
http://motorbicycling.com/f39/motor-bicycle-clutch-301.html
Could be a bad bearing. Does your rear tire move on it's own?
I have a couple of questions how do you start this engine by pedaling it or recoil rope starter?
Do you have the chain tension too loose or very tight?
If your chain is sloppy lose it can bind up on the front sprocket this will act like a brake as the chain hits the engines housing from bunching up on the sprocket killing the engine.
Norman
Do you have the chain tension too loose or very tight?
If your chain is sloppy lose it can bind up on the front sprocket this will act like a brake as the chain hits the engines housing from bunching up on the sprocket killing the engine.
Norman
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I start by pedaling, The chain tensioner is in the middle. The chain has 1/2in. of slack on it. I can pedal the bike with the clutch in fine. I was riding a few weeks ago and my chain fell of at 20mph. It fell into the dive gear and bent. Could this sudden stop have broken something in the clutch assembly?
you might have a sheared key on one of the gears or sprocket it might be holding well enough to start but the killing of the engine part puzzles me? Have you checked the wiring making sure no worn or shorted wires anywhere?
Have you taken off the clutch cover to make sure all is well no broken teeth on either gear?
No loose parts under all covers including the mag coil cover?
One more thing check and make sure you have all of the carb parts in the stock position.
make sure your needle e-clip is clipped in the #2 slot from the top of the needle. no intake leaks?
did you split the crankcase? If you did did you get a new gasket these gaskets like to leak in the back area where you can't see them leak,right where the main shaft goes through. All seals in place and not leaking? leaks will sometimes show a black oily goo where they are leaking.
It could be a number of things causing your problem not being able to see it myself its going to be a tough one.
Norman
Have you taken off the clutch cover to make sure all is well no broken teeth on either gear?
No loose parts under all covers including the mag coil cover?
One more thing check and make sure you have all of the carb parts in the stock position.
make sure your needle e-clip is clipped in the #2 slot from the top of the needle. no intake leaks?
did you split the crankcase? If you did did you get a new gasket these gaskets like to leak in the back area where you can't see them leak,right where the main shaft goes through. All seals in place and not leaking? leaks will sometimes show a black oily goo where they are leaking.
It could be a number of things causing your problem not being able to see it myself its going to be a tough one.
Norman
sort of on topic and might be some help...
I had a '65 Rambler American with a 196 6cyl.. when I got it, it would run and idle perfect but have absolutely no power, and it would flood up and die when you tried to drive it up hill or even on the grass.. New carb aided in idiling but power loss.. ended up having a retarded timing due to a severely worn set of points, and thus, no power... but, I had the original carb professionally restored and it wasn't done right, and had the same problem.. but at that point, I just kept running the new carb, even tho it had no automatic kickdown lever to hook to..
so even tho my experiences are on a 4 stroke car engine, it could be a fuel or ignition problem... check to see if the magneto has spun on the shaft a little, and rebuild or check over the carb
I had a '65 Rambler American with a 196 6cyl.. when I got it, it would run and idle perfect but have absolutely no power, and it would flood up and die when you tried to drive it up hill or even on the grass.. New carb aided in idiling but power loss.. ended up having a retarded timing due to a severely worn set of points, and thus, no power... but, I had the original carb professionally restored and it wasn't done right, and had the same problem.. but at that point, I just kept running the new carb, even tho it had no automatic kickdown lever to hook to..
so even tho my experiences are on a 4 stroke car engine, it could be a fuel or ignition problem... check to see if the magneto has spun on the shaft a little, and rebuild or check over the carb
