Hi’Ya all,
I’ve been lurking here for a while now,
I finally have come to the end of my rope with this darned scooter (affectionately of course).
Little history about my scoot: she was very badly treated in a past life. I got her basically in a thousand pieces in a big cardboard box. I paid next to nothing for her because it was one of those super-hot deals off of CL ;-) pardon my cynical laugh. I am mechanically inclined and luv this stuff; glutton for punishment.
No docs, (fixed that with dmv)
No smog stuff. Cut off by po.
No fuel tank or lines or pump. Cut off by po
No air filter box. Cut off po.
Horrible paint (repainted it).
I got it running very good, with an okie style gravity fed fuel system under saddle. And Specter air filter. (no air leaks now).
Had cut off issues. Did valve job.
Runs very peppy now up to 5K on china tachometer 65 (real 55mph) on chinaometer. On stands revs up to rev limiter 9k or so. Under load on street will not go over 5K on tac.
At one time went up to 80mph (on china meter 70’s real speed). Changed plug and wire. Was grounding out and dying. Clip broken in boot, and cuts in cable.
Put electric fuel pump on (plenty of fuel) . Changed all hoses. (no vacuum or fuel leaks).
Seems like running lean (very clean plug every time) used AF screw no help. Adj. idle. Nada.
New belt in cvt ran with open housing. No bad sounds and belt travels all the way up. I Did not take apart variator or clutch.
Tried to adjust needle in diaphragm. No clips?
? Just a needle and a plastic end piece. Tried making a little washer and raise the needle. Now it runs very badly. I will take that out soon.
Sorry about the long post. Next time much shorter.
End question: Runs perfectly fine up until 55mph real speed then nothing. (5K rpm). Just want 5 lousy mph more so I can pass trucks again on freeway. It ran about 70 real speed, so I know she can do it. I just don’t know why not now. Now it is a little iffy and must draft a lot….. ;-) Dave
Xingyung 257cc linhai (sorry forgot to state).