Bogs Down & Backfires Just Off Idle

carlluvscorinne · Post by **carlluvscorinne** » Wed Apr 11, 2007 1:42 pm

Hi All,

Started the 1964 CB77 for the first time, used Bill Silvers book to set carb and timing and points. Bike idles fine, but when you crack the throttle it bogs right down and backfires though the carb. Any help is greatly appreciated.
Thanks, Carl

LOUD MOUSE · Post by **LOUD MOUSE** » Wed Apr 11, 2007 5:48 pm

What work have ya done to the carbs?. ....lm

carlluvscorinne wrote:Hi All,

Started the 1964 CB77 for the first time, used Bill Silvers book to set carb and timing and points. Bike idles fine, but when you crack the throttle it bogs right down and backfires though the carb. Any help is greatly appreciated.
Thanks, Carl

kustommusic · Post by **kustommusic** » Wed Apr 11, 2007 9:26 pm

Carl, Have you checked your fuel valve and lines to the carbs. and just generally made sure your getting a good supply of fuel to carbs? If thats OK I'd check my float levels. Question; Is it just one side or both that backfire? I really think like L.M. suggests look at the carbs again. Good Luck! Steve Greer

carlluvscorinne · Post by **carlluvscorinne** » Wed Apr 11, 2007 11:39 pm

Hi Guys,

Rebuilt both carbs using keyster carb kits, installed new factory floats, being very careful to set them at 22 mm. Right now running it off a gas can, fuel flow seems great. Bike starts right up and runs fine until about 1600 rpm. I will look into carbs again. Thanks, Carl

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Bogs Down & Backfires Just Off Idle

Bogs Down & Backfires Just Off Idle

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