Lore of the #20 Pilot

Maintenance, repair, troubleshooting, etc.
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Posts: 8568
Joined: Mon Nov 07, 2011 12:42 pm
Region:: Rocky Mountains
Motorcycles:: '92 XJR600, '92 Seca II
Location: Denver, CO
United States of America

Tue May 30, 2017 8:45 am

I appreciate the information, Sleek. My bike actually runs great through the entire range except for an off-idle bog which I am still diagnosing. We have such a varied elevation profile here in the US that understanding the jet sizing for stock XJ's is important so that we stop making the blanket #20 pilot jet recommendation. I have my Wideband A/F set up to data log while riding and I plan to take it out on the Scrambler over the next few weeks and better understand the fueling in the inner-cylinder carbs. I suspect I have a transition issue where the mixture is changing drastically when the butterfly opens. Still understanding the root of the problem.
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