Hi Tw,
My guess is that the jet diaphragm has cracked. If you remove the 4 slot
head screws on the bottom of the jet housing you can disassemble the choke
and jet mechanism and check the diaphragm.
Michael Salter
-----Original Message-----
From: healeys-bounces+msalter=precisionsportscar.com@autox.team.net
[mailto:healeys-bounces+msalter=precisionsportscar.com@autox.team.net] On
Behalf Of T W
Sent: Monday, September 01, 2008 8:55 AM
To: healeys@autox.team.net
Subject: [Healeys] HD8 carb leaking
Hi,
I should be out driving, instead my front HD8 is sitting disassembled in my
basement. Aiieee..
I was getting some gas leaking from the bottom of my front carb. I didn't
notice any gas coming out of the overflow tube. I've had this happen in
the past when I turn the ignition key and listen until the fuel pump stops
clicking. If the pump didn't stop, a couple of taps on the float chamber
would take care of it.
Yesterday I was running down a problem with one of the turn signals (bad
bullet connector), so I had the ignition on for a while without running the
engine. I noticed the fuel pump clicking every so often, and I could smell
gas. No gas coming out the overflow tube, just gas slowly dripping from
the bottom of the carb.
A check of the list archive suggested the diaphram (jet assembly) was a
likely culprit. I pulled the carb off, but the diaphram appears to be
OK.
Is it possible to have slow leak at the float chamber needle valve, so that
the float chamber isn't overflowing, but you're getting too much gas at the
needle? Another question -- when the diaphram fails, is it really
obvious, or could I be over looking a small crack?
I was looking thru my Moss catalog, and it sez the grosse jet is a superior
replacement for the needle and seat. Does anyone have any experience with
one vs. the other?
thanks again!
Tom
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