Change a wheel cylinder and now i think the proportioning valve is stuck

[Jakethesnake73]

Wasnt sure where to put this. When the truck is off the brakes firm up nicely but when its running the brake pedal goes to the floor. I can still get it to stop i just have to push the pedal all the way down to get any significant response (which is still kinda weak). Sonhow would i get this proportioning valve unstuck. Would just bleeding the front calipers bring it back to where it needs to be? 1973 k10


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[Captkaos]

Did you bleed the system after removing the caliper?

[enaberif]

Have you looked at your master cylinder to see if its not leaking?

[Jakethesnake73]

Did you bleed the system after removing the caliper?

never removed the caliper and i have bled the entire system at this point


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[Jakethesnake73]

Have you looked at your master cylinder to see if its not leaking?

my master cylinder was not leaking but since it has some grime in it and my brakes already werent working i went ahead and replaced it with no luck


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[Jakethesnake73]

New master
2 new wheel cylinder
Disc brakes in front
All 4 brakes will bleed


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[Jakethesnake73]

Also before i replaced the first leaky wheel cylinder brakes worked great


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[VileZambonie]

Pull the drums and ensure you have everything assembled correctly and properly adjusted. Re-bleed the system after.