[DeTomaso] Holley Problem

[tony DiGiovanna]

Interesting.  All my Holleys have done the idle stall thing under heavy
braking.  I just live with it on the street, and it is not an issue at the
track.

-----Original Message-----
From: detomaso-bounces at realbig.com
[mailto:detomaso-bounces at realbig.com]On Behalf Of Ron Graves
Sent: Monday, March 31, 2008 6:48 PM
To: detomaso at realbig.com; artstephens at charter.net
Subject: Re: [DeTomaso] Holley Problem


Right.  Listen to Jack.  My Holley-equipped Pantera never had this problem
and I stood it on its nose many times.  There's a gasket, float, or power
valve problem.  What model Holley is it?

---- {0} wrote:
> In a message dated 3/31/08 8:30:31 AM, artstephens at charter.net writes:
>
> > After the engine dies, it blows a little black smoke when I fire it up,
so
> > I figure it is flooding out.  How is that happening?  I don't understand
how
> > gas is getting out of the bowl and into the intake manifold?
> >
> There's a couple of paths into the intake. For instance, a ruptured power
> valve diaphragm, resulting in gas piddling into the engine whenever
there's
> vacuum. If your carb was built before about 1985, Holley did NOT include a
power
> valve-saving check valve in the carb base. And with a substantial pop, it
can
> still happen, or from simple old age or running your wonderful MTBE in CA
gas
> for a few years. Or, I've also found loose main jets in a carb or someone
who
> overhaulded a Holley and used a slightly-wrong gasket between the main
body and
> jet plate, which exposes passages that sholud be sealed off. But I'd bet
on
> the power valve. Good luck, Art- J DEryke
>
>
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