Poor Brakes - Master Cylinder ?
1984 90 with 300tdi.
There seems to be no 'power assist' to the operation of the brakes. The actual braking and stopping is fine, but only happens at the bottom of the brake pedal stroke. The first 3/4 of depressing the pedal really doesn't do anything. If the pedal is pumped, it will build pressure.
I can not hear any hissing under the hood with the egine running or not running, pedal depressed or up. I removed the vacuum hose going to the brake booster and it had a lot of suction (though I didn't measure it and do not know what is normal). There are no leaks that I can find and there is no loss of fluid.
I'm wondering if the master cylinder has failed ? Is there a way to check it without removal ?
Thanks for any advise.
Drive the Best - Drive a Hammond