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Author Topic: CB350F Carb Trouble  (Read 494 times)

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Offline gubben

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CB350F Carb Trouble
« on: August 01, 2019, 03:17:30 PM »
Hello! I've been a long-time lurker to these forums and I have to remark on the wealth of knowledge contained here. That said, I have an issue with my newly-rebuilt carbs. The vacuum pressure is really low and running very lean as you can see/hear from this short video. Before I pull them off and inspect/tinker, I though I'd ask advice. Any suggestions? Thanks!
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Offline gubben

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Re: CB350F Carb Trouble
« Reply #1 on: August 01, 2019, 09:28:28 PM »
Alright... I realize now that video doesn't work unless you download it. So, here's a google link instead:
https://drive.google.com/file/d/1p-sMXrZuyBOqUrvsxzlreE7NmcVC9pn0/view?usp=sharing

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Offline jgger

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Re: CB350F Carb Trouble
« Reply #2 on: August 01, 2019, 09:45:12 PM »
If the vac is low check that the carb rubbers are tight at the clamps and no holes or tears. Also make sure the valves are properly adjusted. If you have a propane torch you can  use it UNLIT and direct a flow of propane around the offending carb and its boot. If the rpm's rise then you have an air leak.
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Offline gubben

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Re: CB350F Carb Trouble
« Reply #3 on: August 02, 2019, 08:22:35 AM »
@jgger I clamped the carb rubbers down pretty good, but I'll check again. As for the valves, you're referring to the tappet clearance?

Thanks
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