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2003, replaced mastercylindar, but can't get pressure to hold

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You obviously have a leak somewhere... put some clean, flattened cardboard under you car and wait until tomorrow and then look for spots. Make sure each wheel is under the cardboard as well as the Master Cylinder. Brakes lines and/or the Master Cylinder gasket are what I would suspect.

Posted on Apr 10, 2015

  • rita hendricks Apr 12, 2015

    Thank you Robert, but it turns out that the leak was beneath the truck at the ABS. connection of the mainline to the rear of the vehicle,, .... $600.00. later, my truck is fixed & back home


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Did you bench bleed first ?

Posted on Apr 11, 2015

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Posted on Jan 02, 2017

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