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Post by gaddio on Mar 30, 2013 20:04:32 GMT -5
Just recently bought another scoot to ride to and work as primary transportation. Ran good when the gentleman I purchased it from delivered it to me. went to start it the next morning to leave for work and nothing. got a ride to work from a friend and tried to find the problem wheen I got home. found a mess with the key switch wires where they had been spliced andd tied together. soldered the wires and put some good shrink tubing on them. checked fuel for water and put fresh fuel in it. checked the rest of the wiires for.r a ba conection but did not find anything. it. Had it hitting and trying to start, checked the plug and seemed to me see ms the sprark is extremly weak from the plug. Oh forgot to mention its 50cc 139qmb.
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Post by skuttadawg on Mar 30, 2013 22:40:18 GMT -5
Now the plug fire will be weaker when removed as the engine is not generating that much RPMs compared to when its installed and the engine is running . When you soldered did you clean the joints with alcohol and apply some flux ? You do know you touch the iron to the joints then apply the solder wire , remove the solder then the iron . If you just melt the solder and let it drop that is a cold solder joint and often does not make a good connection . Check the battery level with a meter or any auto parts store can do this for free as well as charge if needed .
Did you drain the fuel out of the bowl ? I had some gas from a shady place instead of my trusted sources and it had some water in it . It ran perfect going home but would not start . I called my dealer since it was new and he told me they had one that baffled them as to why it would not start . It had water in the gas to and when the drained the tank and carb bowl then refilled with good gas tada it started up as did mine
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Post by gaddio on Mar 31, 2013 8:08:30 GMT -5
There good solder joints, I always heat the wire with the iron after preping with alcohol and flux. Ive always worked on electric RC cars and am aware of the importance of a good solder joint. The gas was drained by first disconnecting the fuel line at the carb, then drained tank, pump and then the carb.
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Post by indymoped on Mar 31, 2013 9:37:24 GMT -5
It could be a bad CDI. I had a buddy who had a 50c with the same situation. Ran when he bought it then wouldn't start later due to no/weak spark. He replace the CDI and it worked again. Also could be a bad coil.
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Post by gaddio on Mar 31, 2013 12:47:27 GMT -5
That's what i was thinking is cdi is going out or bad. I'm going to order a high performance cdi and coil for it this coming week sometime. Was just curious if it could just be the plug. May go ahead and buy a new iradium plug while I'm at it so I know its a good hhot plug.
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Post by dude on Mar 31, 2013 22:02:26 GMT -5
I had a coil go weak on me. It would fire but look orange. When I installed a new one it was a white spark. That solved my problem. On some scoots you must have the side stand up.
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Post by gaddio on Apr 1, 2013 5:19:26 GMT -5
My spark is real light orange, fires just hot enough to hit but refuses to start. I'm going to have to wait till friday to order my cdi and coil. Thinkng about going with scrappy's performance CDI and coil, any opinions on that combo or any suggestion on another product? The center stand is the only one with the switch but its been bypassed since before I got it.
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