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Post by doyso on Apr 21, 2013 14:38:33 GMT -6
Fairly new Chinese Scooter...I go 10 or 15 miles and park...when I try to start it a few minutes or a couple of hours later, it takes a long time to start. Also, when coasting down a hill, with the clutch engaged or whatever, there's an intermittent drag. There is also one sometimes going up hills and on flat roads. It's an off-on problem that is unpredictable. I checked the fuel filter since I assumed the problem was due to gas blockage but it was clean.
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Post by doyso on Dec 5, 2012 1:41:05 GMT -6
I already put a new stator in that I bough from Ebay. I will put the scooter back together and recheck things. If it doesn't start, I may take it to the pros with all the testing equipment e.g. meters etc. I'm sure it will start and it's something small that we missed.
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Post by doyso on Dec 4, 2012 19:45:54 GMT -6
It's too bad...I was hoping for a hole in the piston...that's the most logical...the mystery would have been solved...now it's back to square one?
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Post by doyso on Dec 4, 2012 18:53:49 GMT -6
Never mind about the tensioner. The end of the piston has gunk and a small bruise. See pix via your email.
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Post by doyso on Dec 4, 2012 18:21:14 GMT -6
Where's the cam chain tensioner?
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Post by doyso on Dec 4, 2012 17:36:22 GMT -6
I checked the woodruff key...it's where it's supposed to be and doing it's job.
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Post by doyso on Dec 4, 2012 17:08:58 GMT -6
I decided to move ahead at checking the piston...any info will be helpful... I will also check the woodruff key.
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Post by doyso on Dec 4, 2012 17:06:58 GMT -6
I may or may not keep this scooter to learn about how it works. Can you send a pic to show if I'm on the right rack in accessing the piston? Do I have to disengage the chain?
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Post by doyso on Dec 4, 2012 15:07:29 GMT -6
I was trying to get out of spending another K for a new scooter with this fixer-upper replacement for the stolen one. I have a line on a new one. If I choose to continue with this one, I will undoubtedly present more questions. If not, thanks for all your help. It was a very informative learning experience.
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Post by doyso on Dec 4, 2012 15:03:50 GMT -6
The fact that my finger was ejected out of the plug hole with due force when starting is not enough of a validation that there is sufficient compression and no damage was done to the piston? I applied some force in using the piston stop but not enough to bend metal. The unsuccessful attempt to turn the bolt on the large gear wheel was somewhat ineffectual due to the use of an adjustable crescent wrench... not meant for tough jobs like socket or rocker arm(if that's the correct name)work.
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Post by doyso on Dec 4, 2012 1:11:27 GMT -6
Is there any electrical issues that might prevent starting even though there's compression, spark and fuel? I'm not sure but I think there wasn't a spark a couple of times when I forgot to turn on the key when testing.
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Post by doyso on Dec 4, 2012 1:09:14 GMT -6
Yes, I adjusted the valves. I was not aware of the woodruff key when installing the stator and am not sure of what it is.
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Post by doyso on Dec 3, 2012 20:17:44 GMT -6
The resolution on my camera and other conditions make the video too blurry to see such a small event.
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Post by doyso on Dec 3, 2012 19:47:25 GMT -6
I'll try to get a video of the spark although I don't get the reason for it other than there must be a miniscule difference between a significant spark and one that is deficient. Of course, one would have to know what size spark does not ignite fuel...unless a spark of any size would.
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Post by doyso on Dec 3, 2012 17:30:52 GMT -6
Would pouring gas into the spark plug hole be a better test than the vacuum tube method?
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