nipple on bottom of carb (float bowl) is overflow tube (doesn't need a tube attached although originally it did directing any overflow out under the bike). If you have gas coming out of it then you have a stuck float or leaking float valve/seat. Sounds like carbs need to be removed and cleaned. You can try tapping the carb bowl(s) lightly with a hammer or blunt object like the handle end of a large screw driver, I think your second small nipple is another overflow tube (between the carbs 'T'ing off a plastic tube connecting the two carbs). Gas coming from either indicates carbs need work - simple cleaning might be all.
On Aug 12, 2012, at 8:13 AM, surfswab wrote: > Sounds like float bowl drains and/or overflow tubes. And there should > be at least one tube connecting the carbs to one another. > > Try: > > http://www.servicehonda.com > > Click OEM Easy Search, then drill down -- Honda/motorcycles/1983/ > CB450SC/carburetor -- to bring up an exploded view microfiche of the > carbs assembly. You can then search for clues how all the parts > inter-connect. > > > > On Aug 12, 2:07 am, mywyld75 <mywyl...@gmail.com> wrote: >> Hey guys and gals, >> >> Novice question time, I have an 83 450 with two carbs. >> >> There is a fuel line from the petcock to the carb and also a nipple at the >> bottom of the carb. looks like there should be a fuel line attached to the >> bottom nipple, but I don't know where the other end would go to? >> >> I blocked off the bottom nipple because when I turn on the fuel supply it >> leaks out from here, but after doing that it started to leak from the back >> side of the carb from a very small nipple. >> >> Anyway could someone shed some light as to what hoses are missing and where >> they should go. >> >> Thank you for your help and time. > > -- > You received this message because you are subscribed to the Google Groups > "Nighthawk Motorcycle Lovers!" group. > To post to this group, send email to nighthawk_lovers@googlegroups.com. > To unsubscribe from this group, send email to > nighthawk_lovers+unsubscr...@googlegroups.com. > For more options, visit this group at > http://groups.google.com/group/nighthawk_lovers?hl=en. > -- You received this message because you are subscribed to the Google Groups "Nighthawk Motorcycle Lovers!" group. To post to this group, send email to nighthawk_lovers@googlegroups.com. To unsubscribe from this group, send email to nighthawk_lovers+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/nighthawk_lovers?hl=en.
