Guys, I had a brake issue that I have never seen before. I have a 1970 Chevy c-10 daily and the brake pedal began to fad and got to where you had to pump the brakes to get any pedal. These are manual brakes and had new pads and the drums turn a few months ago. I was driving the truck this last weekend when I pulled over to get gas when I heard a pop sound. I though I lost a wheel cylinder, but had no signs of that being the case. No fluid on the back of the tires, and the master cylinder was full. So I thought nothing of it. When I got back in my truck to drive, I pump my pedal to build pressure and the pedal Kicked back for a lack of a better term. Now when you pump the brakes it kicks like a mule....HELP...is this a master cylinder problem? Has anyone experiences this before? Thanks Clay
RE: Brake problem for a 1970 chevy It almost has to be a master cyl problem. I had a similar problem, when my car was cold the brakes worked great...as soon as the under hood temp went up the brakes started to fade...pump up.. worked ok. What I found out was happening was when the master cyl got warm the tolerences in the bore moved enough that the fluid would leak around the piston causing no break action. If the pads and shoes and wheel cyl's are done right it would have to be the problem. Ed
