So years after riding and working on my 150cc scooter I decided to upgrade to a 2008 rocketa 250cc with 6000 miles. I am very familiar with The 150cc gy6 engine but I an a newbie with The 250cc. The gentleman told me it had be sitting for about 1.5 yrs did not start.
The first thing I did was replace the carb, spark plug and put in new fuel. The scooter starting for about 1 sec then died. I started it again and it started for another second and died and would not start again.
Would tight valves cause it? If so, how would I find TDC? Also would anything else cause it not to start?
I bought a Jonway Y250T as a project bike. I have WHITE Spark, GOOD Starter, and good gas, but STILL it won't start. I replaced CDI, coil, battery and spark plug. I rebuilt the Carburetor and head.I got it to start, but the Idle was rough and white smoke poured from the exhaust. I noticed the flange the carburetor was connected to had a broken broken bolt so I extracted the bolt, resealed the flange, now it won't start at all. Tried adjusting Carburetor air/flow mixture. After about the fourth cranking cycle I hear the Carburetor cough a bit, but that's it. Any suggestions? Photos and video of the repairs for Jonway Xpressway 250cc
Last Edit: Oct 27, 2019 12:52:37 GMT -6 by kcohen67