On Sunday I towed a 1986 cougar home from my friends house. It has a blown head gasket, so I could run it for a little bit but then I'd have to shut it off so it doesn't over heat. the problem with that of course being the issue of no power brakes while being towed 10 feet behind a truck that your wife feels needs to be going 40. lol. anyway, I had to really put my foot in it to get stopped without rear-ending my own truck a couple times. we finally got it home and parked it, and now when i push the brake pedal it goes straight to the floor with hardly any resistance. when i push it in, you can hear the sound of air, like when you pump the old school bike tire pumps. i took the cap off the master cylinder, and when the brake pedal is depressed you can see a small ripple on the top of the fluid, but it doesn't spurt like it should. What did I break????