rich at idle

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17 Jun 2007 21:33 #150314 by vach
rich at idle was created by vach
My bike is running a wee bit rich at idle.. i have 4-1 V&H headers, pods, dana coils and ignition.. I'm running 17.5 pilots and 117.5 mains on the 4th clip.. Should I go back to the stock 15 pilots? Carbs are synced, float hights are good.. Pilots?
1979 kz650 B. Chicago, Illinois

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17 Jun 2007 22:08 #150324 by reborn650
Replied by reborn650 on topic rich at idle
Hey Vach - Have you tried different adjustments with the air screws on the carbs? Are you running Mikuni 24's?

Cheers-Colin Firth-Ontario Canada
-1977 Kz650 Custom bought new by brother. Now with 810 kit, GPz750 cams, intake valves, Mikuni 29 smoothbores, velocity stacks, Dyna Igntion, MAC pipe and other goodies.
-1982 Ferrari 308 GTSi Red/Tan
-Toyota FJ Cruiser - 6 speed tank
-2010 Mazda CX-7 Turbo (my bride's)
-1998 Jeep TJ Wrangler 4.0...

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18 Jun 2007 03:58 #150345 by vach
Replied by vach on topic rich at idle
Yeah, 24's.. The air mixture screws don't seem to help the rich idle.. I just figured with the headers, pods and ignition I'd be safe with the 17.5's... Maybe not.. Sooty plugs and rich smelling only at idle..
1979 kz650 B. Chicago, Illinois

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18 Jun 2007 05:08 #150356 by Snakebyte
Replied by Snakebyte on topic rich at idle
Put the 15 pilots back in. I tried the 17.5 pilots in my 650 and made it run better, BUT I also had intake leaks at the time. I had fixed the leaks and found out that it was running too rich no matter what I did to the carbs. So I put the 15 pilots back in and no more sooty plugs they are a nice tan colorB) .

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