Re: #4 wont stop leaking gas!!

Posted by Keanen on Sep 08, 2011; 9:45pm
URL: http://vintage-and-classic-hondas.81.s1.nabble.com/4-wont-stop-leaking-gas-tp3320566p3321270.html

I changed all the O rings. if it is still the gasket (That I replaced) again, maybe I need to try something different. have you ever tried or heard anything about that "form-a-gasket" stuff that comes in a tube? I dont know if I should try that. or I've head of some metal crunch gaskets...

On Thu, Sep 8, 2011 at 3:58 PM, rich [via Honda CB750'S] <[hidden email]> wrote:

I've got the same problem on mine 79 750K. It's leaking from the #2 carb though, but it is also coming from the top of the bowl area, not the overflow tube. I haven't had a close look yet but I suspect it's the O-rings in the fuel joint pipes that run between the carbs. Did you replace those when you had your carbs off?

I guess one way to know for sure is to move the tank out of the way so you can get a look at the top of the carbs. put the tank on the seat or a table next to the bike and hook up a long piece of fuel line and turn on the petcock. You should be able to see where it's leaking from then.

This is image from the factory service manual shows the tubes I'm talking about:


I'm not looking forward to taking the carbs off and seperating them. But that looks like the only way to fix it unless it's just the float bowl gasket.

79 CB 750K
Holton, KS, US

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