Fuel Leak Nightmare

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On Monday 25Feb, 2008, at 12:57 PM, Vfrgrrrl wrote:

> I need help.
>
> My 1997 VFR has been a real trooper, 130-some thousand miles and
> all. A while ago, I fired him up only to have fuel come pouring
> out of an unknown place under the tank. I have taken the tank, air
> cleaner, and carb cover/tops off, and pulled out the fuel hoses
> that go to the carbs. No leaks. *&%! Now what?? I'm thinking I
> could replace the hoses anyway, and the gaskets to the carb intakes
> and hope for the best, but I'm sure I haven't found the problem.
> I'm getting to where I may just bring the VFR, parts and all, to an
> actual mechanic, but if there are any ideas, I'd be grateful to
> hear them. Anyone that lives in the greater San Diego area that
> wants to help or refer me to someone good is also much appreciated.
>
> I need to get him running. Thanks all!

It sounds like you've got a sticky float that is allowing fuel to
overflow the fuel bowl. All carburetors have overflow hoses, and if
the bowl overfills, it goes out the overflow and all over the place.

Since you've got the fuel tank off, I'd start by draining all the
fuel from your carbs, and filling them with a carburetor cleaner
(SeaFoam makes one, Yamaha's product is well-liked, Berryman's B-12
Chemtool comes up as a useful product as well). Let that sit for
20-30 minutes, then drain it all out. Replace the fuel tank and see
if things work as they should. If they don't, you can either try it
one more time, or just take apart each carburetor (one at a time, to
avoid mixing parts!), and clean off the float-operated needle valve
and seat (e.g. with a small, soft probe soaked in carb cleaner). You
may want a magnifying glass available to look for small bits of
varnish after you're finished. Any debris on the valve or seat will
cause your carb to overflow.

HTH!

Oh yeah. fwiw, the carb hose routing info is on p. 6-14 of my manual
(covers 90-96). Hose #3 (49-state) or #6/10(CA emissions) appear to
be the likely candidates for dribbling fuel all over the place.

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