Does anyone know the reason for the vacuum advance valves on the 74's that
Stephen referred to?
Are they emission related?
and lastly would the car perform better without them? Pugs 756
-----Original Message-----
From: Early, Stephen [mailto:Stephen.Early@mbna.com]
Sent: Monday, May 13, 2002 6:10 AM
To: 'MK F'; bricklin@autox.team.net
Subject: RE: My Bricklin is surging!
The vacuum advance circuit is not simple on a Bricklin. I don't know about
the '75s but the '74s had a valve mounted on the intake near the firewall
that kept the distributor advance from working until the car reached 35MPH.
Additionally, there is another valve mounted at the front of the intake
which bypasses (or activates, I cant remember) advance until the car warms
up. Either of these valves or the rubber tubing between them or the carb
could be leaking. If you have never replaced the vacuum lines, I suggest
replacing them all. It's cheap to do.
Finally, the diaphragm mounted to the side of the distributor could also be
leaking. You can get a hand held vacuum pump with a gauge at an auto store
(Sears sells them) to check it. The pump will also help analyze the valves.
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