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Old 03-20-2013, 08:56 AM   #163
zap2504
Dave E.
 
Joined: Feb 2006
Location: Middletown, PA
Oddometer: 548
Quote:
Originally Posted by Krasniewski View Post
Sounds/looks like the Idle Mixture Screw has less/shorter effect on the fuel map and I need to tackle a new pilot jet... but I'm not really convinced I'm too rich based on the way the bike rides - I feel lean, which doesn't match the Ryca recommendations... unless I went too lean by leaving in only one washer under the needle - I went down from three to one. I dunno nothin.
DIY carb tuning is usually a pain unless you have some diagnostic tools. No tools=running repetitive plug chops to see what effects the carb changes have on the color of the spark plug insulator. You could ask around to borrow a ColourTune device (essentially a spark plug w/a visible insulator so you can see the combustion color), or an exhaust gas analyzer.
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