Re: Can I leave the petcock open???

Posted by sgtslag on Jun 07, 2012; 1:21pm
URL: http://vintage-and-classic-hondas.81.s1.nabble.com/Can-I-leave-the-petcock-open-tp4022379p4022432.html

No idea.  It would require hooking up a vacuum hose to the carbs -- would need to add a splitter on an existing vacuum hose? It should work.  The real question would be regarding the Custom petcock's ability to screw into the gas tank's belly:  are the threads the same?  Most likely, they are.  If someone knows for certain about compatibility, please sound off, as I am working off theory.

For a better chance of getting a definitive answer, you may want to visit the CB750 Custom forum (registration required; not as friendly, by far, but the folks there are exceptionally knowledgeable; be sure to use the search function before you post your question!  They can be quite testy if you ask an old question that has been discussed, ad nauseum, in the past.  Best of luck.  Cheers!