Brake information/help - The 1947 - Present Chevrolet & GMC Truck Message Board Network

Hx16457 · 10-23-2012, 06:34 PM

I have installed and bled new brakes. I have an old booster from a pick and pull with a new 1976 disc/drum master and proportion valve. I am running a 1976 front end (swap), w/1972 rear drum setup.
I bench bled the master.
Old school pump the brakes and bled the lines.
My issue;
When I start the engine (touching nothing else), my pedal sinks almost to the floor, i can just watch it sink!
WHY?
Once it sinks, and I drive the (1965 C10), I have a "hard pedal", as the pedal continues to stay sunk....(brake lights stay on due to pedal not coming up high enough to touch the switch)
Help me, what is wrong with my system?
I have never seen this before!
Posted via Mobile Device

10-23-2012, 06:34 PM	#1
Hx16457 Registered User Join Date: Sep 2012 Location: Lawton Oklahoma Posts: 308	Brake information/help I have installed and bled new brakes. I have an old booster from a pick and pull with a new 1976 disc/drum master and proportion valve. I am running a 1976 front end (swap), w/1972 rear drum setup. I bench bled the master. Old school pump the brakes and bled the lines. My issue; When I start the engine (touching nothing else), my pedal sinks almost to the floor, i can just watch it sink! WHY? Once it sinks, and I drive the (1965 C10), I have a "hard pedal", as the pedal continues to stay sunk....(brake lights stay on due to pedal not coming up high enough to touch the switch) Help me, what is wrong with my system? I have never seen this before! Posted via Mobile Device __________________ People who make excuses didn't want to do it in the first place! http://s1326.photobucket.com/albums/...cpZZ1QQtppZZ16



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