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the plug insulaters were white to very light tan & with a brief period at idle (seconds) the outer metal ring would accumulate soot.
White plugs means too lean.
Quote:
With 155 mains & no shim the idle is better (smooth @ 1000 RPM), but still seems a touch rich.
What do you mean, seems rich? How can you tell? Is there black smoke coming out the pipes when you accel? Is the engine chugging?
The only real indicator I see are the white plugs...
What about your float height. Could it be set too high? Is your choke circuit partially on? Just seems really weird to me!
12 Rocket Roadster
03 Bonneville America
69 BSA Firebird Scrambler
73 Yamaha TX 750
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