I have had a similar experience in my '72 Newport. One day, I slammed on the
brakes. For a couple of days after, I heard a vacuum like whistle somewhere.
Soon after, my car started running very poorly, accelerating like it had a
severe vacuum leak. Feathering the accelerator was needed to get the motor
to rev. Once at speed, the car ran smooth, tho I could tell a vacuum problem
existed.
I found that when the brake vacuum hose to the brake booster was taken off
and plugged, the car ran fine. I bought a new brake booster but have yet to
put it on. After I bought the new booster, it came to mind that it may just
be the seal around the one way valve button on the booster that failed, this
part fits loose enough to lose vacuum. I'm in the process of deducing the
problem.
Yet another potential area of failure for your '66. Hope this helps.
Eric
Portland, OR
From: "Brian Shea" <bshea@xxxxxxxxxxxxx>
Subject: RE: IML: 66 crown
Date: Mon, 21 Jun 2004 09:54:05 -0500
Reply-To: mailing-list@xxxxxxxxxxxxxxxx
as soon as it happened I pulled the air cleaner and the choke was wide open
but i noticed a steam
(smoke like cloud coming out of the primaries). Could that be the floats
being stuck?It runs great as long as it is above idle speed.
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