Why does my scooter take so long to start?

by Jonathan
(Minneapolis)

I own an Urban Tank 50cc scooter and I'm having trouble getting it to start quickly. When it first starts, it almost dies when you rev the throttle, but then it runs great after 2 to 3 minutes of riding.


Here are my scooter details:
  • Broken Air Box
  • Starter seams to engage but then releases after one turn of the engine
  • Brand new battery
  • Brand new sparkplug
  • New gas and oil


Thanks,

Jonathan

Comments for Why does my scooter take so long to start?

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Oct 05, 2010
P.S.
by: Jim Zeiser

Ignore the Japanese scooter people. They have no time, no talent and enough money to cover it up.

Oct 05, 2010
Seal the Air Box
by: Jim Zeiser

Because the box is leaking it's running lean. If it's not a big hole-duct tape or epoxy. Otherwise locate the idle mixture screw and adjust it one turn out. Fixing the air box is the better option.

Sep 22, 2010
Opinions, opinions
by: Kathi

Well, Anonymous, you are certainly entitled to your opinion, but there are a number of very happy Chinese scooter owners here on this site every day.

For people willing and able to learn how to maintain them, it seems they can -- and DO -- run very well for thousands of miles.

So hopefully, someone will be able to answer Jonathan's original question...

Sep 21, 2010
ALL CHINA QMB-139 BIKES BITE!
by: Anonymous

Well dude, it's just like all these untested China bikes... turn clockwise on the carb-stop screw 2-3 full turns... it will raise the idle... and keep it going until the next major issue shows up... then do what I did... drive it into the bay and buy a Honda.

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