[XR7Cougar]

My brake pedal went to the floor the other day as I was driving and now hardly stops the truck at all. Fortunately it got a little mushy 1-2 stops before so I was ready for it.

It is in a 1974 Ford Bronco (no power brake booster, 4 wheel drum brakes, ford 9" rear, dana 44 front).

The fluid is still full in the master cylinder and there is no apparent leakage. How can I tell if air got in the lines (it sees quite a few bumps and maybe some worked in from the MC?) or if the master cylinder is bad?

Thanks.

 

[Blue Fastback]

needs a master. Air in lines just doesnt appear.

 

[107485]

i would say its is the master cylinder, i had the same thing happen. get a new one they are pretty cheap if you shop around

 

[XR7Cougar]

Thanks. I've never had a MC go out before, I just wanted some confirmation before swapping it out.