Clinician
Currently Offline
Ha Ha Ha, Bless yo soul~~~2009 Shanghai Scooter 4 stroke 50cc
Posts: 4
Likes: 0
Joined: Nov 3, 2010 14:01:59 GMT -6
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Post by blacraven on Nov 7, 2010 2:24:34 GMT -6
Hey, Ive adjusted the valves both at .003 to the best of my ability, the one on the bottom was very hard to get to, i have my doubts about that one but i triple checked it and i think its right. well, ... im happy to say that i effortlessly hit 40-50mph again! its like my bike is re-born, thanks so much everyone that helped me.. i do have a slight problem, i think it has something to do with the bottom valve, im getting some backfiring every now and again. and also is that a good setting to have them at .003?
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Clinician
Currently Offline
Ha Ha Ha, Bless yo soul~~~2009 Shanghai Scooter 4 stroke 50cc
Posts: 4
Likes: 0
Joined: Nov 3, 2010 14:01:59 GMT -6
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Post by blacraven on Nov 3, 2010 17:07:07 GMT -6
Thanks a million! I dont know what or how to do valve adjustments, or what ill need. is it like throwing the timing off or something? Sorry im a novice but I'm willing to learn.
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Clinician
Currently Offline
Ha Ha Ha, Bless yo soul~~~2009 Shanghai Scooter 4 stroke 50cc
Posts: 4
Likes: 0
Joined: Nov 3, 2010 14:01:59 GMT -6
|
Post by blacraven on Nov 3, 2010 15:10:39 GMT -6
Hello all, i bought a New Shanghai 2009 50cc scooter 4 stroke about two months ago about 1700km now, ive had a problem after about a month, i ride(or use to) daily. alot of times with my wife. (total weight about 500lbs, i know, too much) it was fine until one day we were on it and it slowed down and stalled.. i re-started and it sounded funny like it wasn't turning the engine only a ???spinner??? <not a slipping starter noise, but another noise>, tried again worked fine, this was the begging of it all. slowly but surely over the weeks i started to lose more and more power, it became harder and harder to start. it takes about 10-20 starts and cut offs to warm it up(it wont stay on even with full throttle until it warms up) and then it still wont go past two blocks without slowing down and cutting off. with both of us only 1 block. it will idle forever once it fully warm, rev up fine go around in small circles in a vacant lot but try to go a distance of more than a block and cuts off every block again. i only use sunoco ultra 93 gas, it has never had cheap gas, only the best. i broke down the carburetor fully yesterday cleaned and sprayed everything, but it was already very clean, air filter is clean, i changed the spark plug, it wasn't worn at all, wires look great, hoses look fine, one hose(dont know which, not gas) has a crack but i sealed it and started it to see if it was a difference and it wasn't. i never modded it in any way. the bike is well taken care of, i only put too much weight on it so i think that may be the problem, i use to get it up to 50mph down hill and go pretty fast on a straight away, now i can barely hit 12 miles per hour. PLEASE HELP.. ive searched everywhere and i don't see anyone with my problem, how can i fix it? don't wanna take it to the shop if i don't have to, im pretty handy myself also if i wanna keep riding my wife should i upgrade for more torque or no? and how will that affect my overall lifetime on my bike?, i like the rollers and springs vids i saw, i would love to have maybe a little more speed, but honestly i didn't mind things the way they were before the problems. HELP!!! Thanks.
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