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  1. 74dusterman

    brake problem

    Is the master cylinder the correct one for the drive train you have? I had the same problem with a truck I recently bought. The previous owner put a 86 D150 body on a 77 W200 drive train. The master cylinder for the D150 did not have enough volume or pressure to fully operate the brake system...
  2. 74dusterman

    Brake pedal goes to floor with engine running

    This past weekend I finally got a chance to work on the brakes. I changed the mastercylinder, bought a new one. I bench bled it according to instructions. Installed it and bled all 4 corners following the correct sequence and using a mighty vac bleeder. I checked the vacuum to the booster...
  3. 74dusterman

    Brake pedal goes to floor with engine running

    The engine is a 383 out of a car. I believe it has never been rebuilt. It seems pretty tired and doesn't have a lot of power. I had a vaccuum gauge hooked up to the carb when I was trying to adjust the idle mixture screws and it was pulling around 15. I pulled the hose off the brake booster...
  4. 74dusterman

    Brake pedal goes to floor with engine running

    I had the caps on the mc. I made the mistake of pumping the brake pedal once and shot a bunch of fluid out. I didn't try pulling the hose off the booster to see if it hisses. I checked the booster according to the manual and it checked out good without any leaks but I will try pulling the hose...
  5. 74dusterman

    Brake pedal goes to floor with engine running

    Front are disc rear are drum. Bleeding technique is the good old 2 person pump them up, hold pedal, open bleeder, pedal goes to the floor, close bleeder, repeat the process. Starting farthest away from mc. I don't know how there could be air in the lines because I ran a quart of fluid out the...
  6. 74dusterman

    Brake pedal goes to floor with engine running

    It's not an A body but I was hoping you guys could help. I am having troubles with my truck. The running gear is from a 1977 W250 and the body is a 1986 D150. The brakes have not been right since I bought it this summer. I replaced both front calipers because they were sticking. I bled them...
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