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Post by captaincrunnk on Sept 6, 2014 8:18:18 GMT -5
As the title states my rear wheel has a continuous turning, even after the enricher has closed off (I checked), and my idle has been adjusted every which way possible to test it. I attempted to fix it by adjusting my throttle cable tightness at the handle, thinking my throttle was stuck open since it would actually try driving out from under me last night while standing at a stop. Here is a video of the problem with some explanation.
I know it's likely that it could be the clutch in some way, but I'd like to explore any other options before I go that far. Any suggestions?
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Post by rockynv on Sept 6, 2014 9:25:18 GMT -5
Idle is a tad high. Are you adjusting the idle mix screw or the low idle stop screw on the throttle linkage side of the carb? Other than that a roller could have flipped and is preventing the variator from opening up fully. A failing clutch spring not pulling back one of the pads so that its always dragging whenever the engine is spinning is a possibility but...
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Post by captaincrunnk on Sept 6, 2014 9:33:22 GMT -5
Idle is a tad high. Are you adjusting the idle mix screw or the low idle stop screw on the throttle linkage side of the carb? Other than that a roller could have flipped and is preventing the variator from opening up fully. A failing clutch spring not pulling back one of the pads so that its always dragging whenever the engine is spinning is a possibility but... I'm adjusting the screw on the throttle linkage for idle. My air mix is capped I believe, but I would love to have access to it. I will look in to the variator thing and see if (pray) that's it. I'm only leaning towards something in the clutch because of other issues I've seen with the clutch pads/springs that result in this kind of behavior. Thanks for chiming in man, just hoping I can get it back to normal over this weekend. |
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Post by rockynv on Sept 6, 2014 10:17:50 GMT -5
Also if there is a sudden change in idle speed you could have leaky intake or vacuum line. Sometimes when valves get out of adjustment there will also be an initial increase in idle speed. So be sure to verify that the carb is bolted on securely as are the intake clamps. Also give the vacuum lines a good inspection.
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Post by captaincrunnk on Sept 6, 2014 11:18:26 GMT -5
Also if there is a sudden change in idle speed you could have leaky intake or vacuum line. Sometimes when valves get out of adjustment there will also be an initial increase in idle speed. So be sure to verify that the carb is bolted on securely as are the intake clamps. Also give the vacuum lines a good inspection. Nothing changed about the idle suddenly or anything, it was just that right before that ride I had let the wheel stop spinning before we mounted it and took off around some back roads and then when we stopped at a nearby pond I noticed the scooter wanting to take off by itself at low speed which brought me to my initially thinking that the throttle had stuck a little. When I got home and put it on the center stand the wheel was still spinning and it was trying to walk away from me while I was kicking down the stand. Since I posted this video I adjusted my idle back down to about 700-800 and it doesn't spin anywhere even close to fast enough to move the scooter anymore or even fight me in the least and it actually runs a bit better since doing so. I'm just waiting for an opportunity to get out and check under the cover. |
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Post by xyshannen on Sept 6, 2014 12:21:59 GMT -5
I just went through the same problem on my scoot. Upon inspection of my clutch one of the pad assemblies' casted outer metal sheared off and was preventing it from retracting. So it was in constant contact with the bell.
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Post by xyshannen on Sept 6, 2014 12:22:09 GMT -5
oops
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Post by tvnacman on Sept 6, 2014 13:04:14 GMT -5
It could be the variator binding and holding closed a bit . Don't be intimidated by what is under the cvt cover . Its not a bad thing to overhaul the clutch even if it is not where the problem is coming from . I like to break it all down clean it up real nice get all the chinese grease out , lube all the slides and pivot points sand the pads and bell to get the glaze off .
One thousand rpm is low , I suspect the tach is off too .
How far from NYC are you Captin ?
John
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Post by captaincrunnk on Sept 6, 2014 15:02:20 GMT -5
It could be the variator binding and holding closed a bit . Don't be intimidated by what is under the cvt cover . Its not a bad thing to overhaul the clutch even if it is not where the problem is coming from . I like to break it all down clean it up real nice get all the chinese grease out , lube all the slides and pivot points sand the pads and bell to get the glaze off . One thousand rpm is low , I suspect the tach is off too . How far from NYC are you Captin ? John I'm practically in Cape May. |
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Post by JerryScript on Sept 6, 2014 21:48:39 GMT -5
I'm with John as far as suspecting the tach is off. Normal idle RPM for a 50cc is 1400-1700, and for a 150cc it's around 1900. The fact you could turn your idle down to what shows on your tach as below 1000 and stop the rear wheel spinning reinforces the suspicion that your tach is off (the wheel should stop spinning when the engine is below 1400rpm or even higher).
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Post by ksaun123 on Sept 7, 2014 4:04:49 GMT -5
It supposed to do that
Sent from my iPad using Tapatalk
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Post by captaincrunnk on Sept 7, 2014 9:08:51 GMT -5
Huh, well the tach being off is definitely something I hadn't considered. I have no previous experience with this particular engine so it's tough for me to be the judge of when exactly she is idling too low or too high, I just know what sort of "sounds right." I do know that when I turn it down to the point where it's below about 800 or so on my tach it starts to kind of sputter and not really enjoy life so much, at least thats how it seems. It's much smoother when I have it higher, but then my wheel spins like crazy.
CVT cover is coming off TODAY. I will report back with as much info as possible.
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Post by ital on Sept 7, 2014 10:47:21 GMT -5
I had the same problem with mine and lighter variator weights resolved the issue for me. The issue would happen more when the scooter was warmed up. No matter how I adjusted the idle screw it would spin. With the heavy variator weights my scooter felt like being in overdrive all the time....
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Post by captaincrunnk on Sept 7, 2014 13:08:24 GMT -5
So just an update, I got in under the CVT cover and found absolutely nothing abnormal. I was stumped. I decided what the heck since I had everything apart anyway and did a valve adjustment. Completely solved the issue. I've run it several times today around town and have not had the wheel spin at idle once since then.
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