recian
Full Access Member
- Joined
- Jul 17, 2013
- Posts
- 61
- Reaction score
- 0
- Location
- new bern
- First Name
- curtis
- Truck Year
- 1981
- Truck Model
- c10 cheyenne
- Engine Size
- 305
So my 81 has a spongy brake pedal. I drove a couple other trucks prior to this one and they were the same way. This truck was the first one I drove with an alum/plastic master. Rest had solid cast ones. So far I've changed the black brake fluid and bled the brakes along with replacing leaky rear cylinders + lines and adjusting the new rear shoes out. Its a little stiffer but still goes half way down before grabbing. I'm leaning towards the proportioning valve or front brake hoses next. I was reading up on the brake diagnosis on the sticky to get a few ideas. Anyone here seen something that's common?