Posted by Keith in Washington [172.68.142.164] on Tuesday, May 08, 2018 at 13:06:13 :
In Reply to: Losing brake fluid on a WM300 posted by George Wellman in Mich [162.158.75.85] on Monday, May 07, 2018 at 14:37:46 :
Check the booster as people suggested and also check the master cylinder. Check around the push rod on the master for leaks. The cup/seal in the master could be letting fluid past which would give you the sinking peddle.