Running Rich?

Acemastr · World Chat Champion Joined: 01 Oct 2008 Karma :

I've done 3500miles on my YBR, tis a great little bike and has worked well.. except...

Once warm, if i'm idle and i open the throttle to pull off quickly, it'll cut out, bog down very quickly then stall completely and i'm left stuck at the front of a queue, should this happen?

Also... if i change gear at 10k rpm (the start of the redline) it'll change gear fine and off i go, now if i change just after 10k revs it'll 'hiccup' once i hit 9k rpm in the next gear, by hiccup i mean stutter, enough to throw me forward then backwards on the bike and it looks ridiculous.

Is it me? or is my bike running rich? there's a distinct smell of fuel in the air if i open it hard from idle.

(when i saw warm, i've just gotten home from work that took 25mins and was doing 60mph on the dual carriageway)

*Edit* It's a carbed version as it's a jap import*
Cheers

Aaron
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2017 KTM 350 XC-F - 2014 Yamaha R6 - 2005 Yamaha YZ125
2016 Toyota Tacoma Limited

Itchy · Super Spammer Joined: 07 Apr 2005 Karma :

Have a look at the spark plug colour , lean running is white, brown is normal , black and sooty is rich.
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Spain 2008France 2007Big one 2009 We all die. The goal isn't to live forever, the goal is to create something that will. In the end, your life will flash before your eyes. Make sure it is worth watching.