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1981 Vacuum Breaker

Posted: Fri Apr 25, 2025 8:46 pm
by budanddar
The site is a bit overwhelming with the knowledge and trying to find my issue.
Don't want to duplicate an existing thread but...........can't find out why the small tube coming off the vacuum breaker on the top of the carbs has a small gas drip coming out.
Is that tube to be connected somewhere and I have it open to the atmosphere? Or Is there something goofy with the vacuum breaker itself?

I hope it is called the vacuum breaker.
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Re: 1981 Vacuum Breaker

Posted: Sat Apr 26, 2025 8:40 am
by CBX-tras
The vacuum valve is damaged and leaking fuel into that chamber.
Frankly, I don't trust them and replace the eliminate the entire mess.
The only downside is that you need to get into the habit of turning the petcock to "OFF" whenever the bike isn't running.
It's a perfect place to install a Tee and an inline filter that is easily serviceable.