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Discussion Starter · #1 ·
Hey guys, Ok, I fixed the leaking carb. It was a cracked overflow tube. I've got it so it will start and idle well, but when I head down the road it starts missing as I roll on the throttle. I have been through the carbs several times n search of another problem so I know they are clean. Float height is good. I am not sucking air around the intake boots. The CV slides move smoothly in the bore. I have new gas. Any ideas on what I may look at next? Thanks guys. Zeph
 

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Plugs, plug resistors, coils etc - if you're pretty sure the fuel part of the equation is correct go to ingition next.
 

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Did you synchronize the carbs? A quickie check is to unplug one spark plug wire and run the bike on only one cylinder. Make a note of the rpm and then run the other cylinder solo. Compare the rpm's -- if they're not the same, adjust the screw on the spring loaded linkage that connects the two carbs.
 

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Discussion Starter · #4 ·
Thanks guys, Dash I did not split the carbs from he rack, so I didn't mess with the Sync. other than "assuming" they were right before. Probably oops. That is a very cool cheater check tip on Syncing. I have never heard that one before. I am also off to get new plugs. More later. Zeph
 

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My "quickie" carb synch method is the official method as recommended in my 1969 Moto Guzzi repair manual. It's actually the only method I've ever used on the four CX/GL500's that I've owned. But if Honda engineers want you to use vacuum gauges, that's okay with me. If I owned more than one vacuum gauge, I'd do it per the Honda method.
 
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