rchrd989 Posted April 12, 2008 Share Posted April 12, 2008 So I have a 72 240 that I rescued awhile ago from sitting for 15 years. brakes wise ive replaced teh front callipers with yota calipers, rebuild the rear wheel cylinders the right way, replaced the master cylinder, took apart each of the 3 valves and cleaned them throughly. What I have going on is when the car isnt running there is good pedal pressure but when the car is running there is none. Ive bled the brakes over and over again and checked for leaks. also the pedal makes a nasty clunk when you push it in. Any ideas? I more concerned about the nasty clunk I can figure out the pressure issue. Quote Link to comment Share on other sites More sharing options...
Cutlass372 Posted April 14, 2008 Share Posted April 14, 2008 It sounds to me like you need a new master cylinder. Quote Link to comment Share on other sites More sharing options...
rchrd989 Posted April 15, 2008 Author Share Posted April 15, 2008 it's brand new. I thought so to so I replaced it. Quote Link to comment Share on other sites More sharing options...
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