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powermaster

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  1. J

    Powermaster break problems

    Well, ive been having some problems with my 1987 buick grand national powermaster brake system, as many people do, and I have been looking everywhere for similar problems, but I finally caved and decided to ask someone here. So, whenever I turn the ignition on, the motor pump doesnt stop...
  2. jshot

    PM Rebuilt, Still pedal will hit the floor

    Very Frustrated Just bought this 87 GN with PM.When i first got it wouldn't stop worth a darn. would stop but not enough for an emergency stop. So i rebuilt the PM with the Kirban Kit and a new Accumulator and new brass Proportioning valve. Bench bled, Gravity bled, then 2 person beed. Also...
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