Carb King? Ha Ha...
If you're referring to the volume of times I've wrapped myself
up in trying to figure out what carbs are doing...well OK.. I guess it's as
good a title as any.
It sounds like you floats are not properly setup, or the float needles
are sticking on you. You should check the condition of your float needles
and the height setting of the floats to verify they are closing off the supply
correctly.
Yes, the float bowls are vented to the carbon canister. If you have gas
coming out of these tubes, in essence, your float bowls are over filling,
meaning
the floats are not closing the valve correctly. At speed it could be vibration
that
is stopping the floats from operating correctly
...just a WAG based on the limited info.. (wild ass guess)
Paul Tegler wizardz@toad.net http://www.teglerizer.com (new layout)
-----Original Message-----
From: Terry L. Thompson <tlt@digex.net>
To: spitfires@autox.team.net <spitfires@autox.team.net>
Date: Thursday, May 25, 2000 10:05 AM
Subject: More carb questions
The carb king (Paul Tegler) can probably answer this for me, but I figured
I'd shoot it to the list. And this is with regards to HIF4's from an MGB.
The Haynes manual shows the lowest tubes protruding from the carburetor
housing as being a "secondary venting tube". I thought maybe they were
supposed to feed to the carbon canister, but soon found that petrol leaks
out of these (and will foul-up the carbon canister).
A guy at the local LBC parts place told me these are probably "fuel
over-flow" tubes. (um....okay...I'll buy that).
Aside from the smell of gasoline, this seems a bit dangerous to have
gasoline over-flowing onto my car's frame. When I capped these tubes off,
the carbs seemed to become increasingly rich (the carb is sucking air
through these?). The parts guys suggested taking hoses and feeding them to
underneath the chassy, or into a small container so it won't eat-up any
undercoating or paint.
I'm not experiencing a large drop in fuel economy (I'm getting between
25-35mpg....odometer/tripometer stopped functioning about 2 weeks ago so
it's difficult to calculate), so they're not spewing gas out at any
consistant rate even with richer than stock needles installed, but at higher
speeds I can smell gas.
My question is...what the hell are you expected to do with these tubes? feed
to carbon canister? cap-off? fuel-return?
Very confused,
Terry L. Thompson
'76 Spit 1500 (still need photos of the engine compartment)
Maryland
|