YY250T scooter Idles high and won't throttle By kcohen67 (Read 921 times)

[kcohen67]

I really don't understand it. She was running just fine. Then I didn't ride for a few days. I put her on a slow charge last night. I went to start her this morning and everything was fine, but she never idled down after the warm up. I tried the throttle, but she bogged down instead. I just recently changed out the carb and bystarter, and until this the bike was running PERFECTLY. Now that the biike is warm the idle is weird. I still can't throttle. I let it just run (thinking if it's a clog or something, it might work itself out) but after some time she just dies out. Please HELP.

[justbuggin]

if it was running fine then why did you change the carb

[kcohen67]

Nov 29, 2012 8:54:38 GMT -6 justbuggin said:

if it was running fine then why did you change the carb

I changed the Carb because it wasn't running fine...

[kcohen67]

Problem Solved (I think)..... Okay, NOT Solved

It seems that the stem in the Vacuum pump had worked it's way loose. I forced it back into placed with pliers, re-attached the line and started her up. Now...she's fine.

The bike ran fine for about a mile before she bogged down and quit. I push the start button several times only the here it sound like it wanted to start. then..tried to start again and she turned right over. I couldn't throttle up, but the idle was high enough to cruise me in at 21 mph. I really need to work this out. I just put her up for sale 3 days ago. I can't sell it like this...

[kz1000st]

Vacuum leak. Get it started and spray around the carb with WD-40. If the engine runs better you'll have the area of the leak. Also look for vacuum hoses that are off. Listen for a hissing noise and see if it's open.