This is the symptom of a failed master cylinder. I found that new master
cylinders are readily available, and have used them now on 3 of my boxcars -
all successfully. I also get these from NAPA.
Dick Benjamin
----- Original Message -----
From: <Billimp68@xxxxxxx>
To: <mailing-list@xxxxxxxxxxxxxxxx>
Sent: Monday, June 23, 2003 1:08 PM
Subject: IML: 1968 Imperial Brake Puzzle
> List,
>
> I have a 1968 Imperial Crown Coupe with brake problems, which is not the
> usual 67 & 68 caliper or rotor problem, but the pedal, which will sink to
the
> floor with steady strong pressure. There is no apparent leak in the
system,
> brakes have been bled, master cylinder has been replaced once from a parts
> car, then two other times with rebuilt master cylinders from NAPA. The
pedal
> will pump up, but with steady pressure on the pedal it will sink to the
floor,
> with the "check brake" light coming on. The pedal seems to pump up
quicker and
> stay firm longer with the engine off than on. I would appreciate any
> suggestions concerning this problem.
>
> Bill/Imp, 68's
>
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