85 C10-Silverado-right front disk brake does not release pressure

[FloridaAbreu]

replaced both front calipers and disk pads, rotors in pretty good shape, very light grooving...
left side brake grabs, releases when peddle is released, right sight grabs, but doesn't release pressure
when peddle goes up, if I bleed the pressure off, it releases just fine, rotor turns freely.
My expertise with power front brakes ends with replacing rotors,calipers, oh, and filling the fluid reseviour,
WHERE should I look next to figure this out    I could just replace the entire master cylinder unit,
but I don't know enough to decide thats where the problem is... oh.. did a trace, no kinked or damaged
lines on the right side,  and theres only 1 line to the brake caliper, so I ruled out a "plugged" line,
it bleeds out with clean fluid too... ok..I'll stop and let someone else give me ideas now...thks in advance...

[zieg85]

Replace the brake hoses.  It will correct the problem

[roundhouse]

Yep
It's the rubber hose
Replace both sides with new

When you get the old one off the truck
Pry the metal clamp/bracket in the center of the hose off and slice the hose with a razor blade where the clamp used to be

It will look like a clogged artery
Full of gunk on the inside under the clamp but fine everywhere else


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[Irish_Alley]

Yep
It's the rubber hose
Replace both sides with new

When you get the old one off the truck
Pry the metal clamp/bracket in the center of the hose off and slice the hose with a razor blade where the clamp used to be

It will look like a clogged artery
Full of gunk on the inside under the clamp but fine everywhere else


Sent from my iPhone using Tapatalk

if you look at the bracket it should be all rusty and the rust will act like a spacer and squeeze the hose together. it will allow fluid down to the caliper but since theres not that much return pressure it wont allow it to go back so easy.