Spongy brakes
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1st Gear
Joined: Apr 2022
Posts: 1
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Spongy brakes
1.leaky mc.Repaced.
2.rebuilt calipers.
3.No fluid to left rear caliper.Rubber brake line clogged.Replaced all,frt and rear.Bled and brakes went floor.
4.Purchased one man brake bleeder.Bled all calipers again,brakes okay.Manual brakes no power.
1974 corvette 4spd 350.Has been sitting 30 years.Motor runs.
2.rebuilt calipers.
3.No fluid to left rear caliper.Rubber brake line clogged.Replaced all,frt and rear.Bled and brakes went floor.
4.Purchased one man brake bleeder.Bled all calipers again,brakes okay.Manual brakes no power.
1974 corvette 4spd 350.Has been sitting 30 years.Motor runs.
Le Mans Master
Joined: Aug 2017
Posts: 8,336
Likes: 2,810
From: Cool Northern Michigan
Was the correct MC installed? The same year design?
They changed the design of the MC over the yrs. More specifically the mount and piston on the back of the unit.
If you purchased a "Fits All Vettes" master, it's likely wrong.
What happens is, too much gap between brake pedal rod and MC piston.
Some yrs were adjustable rod. Most were not.
Master was bench bled?
They changed the design of the MC over the yrs. More specifically the mount and piston on the back of the unit.
If you purchased a "Fits All Vettes" master, it's likely wrong.
What happens is, too much gap between brake pedal rod and MC piston.
Some yrs were adjustable rod. Most were not.
Master was bench bled?
Is my vette stock?? HAHA
Joined: Oct 2015
Posts: 20,222
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From: Im not allowed to tell you
2020 C3 of the Year Finalist - Modified
2020 Corvette of the Year Finalist (performance mods)
2019 C3 of Year Winner (performance mods)
2016 C3 of Year Finalist
Sounds like air still. How many times did you bleed them and what order?
Had a 1976 L-82, 4-sp
Joined: Mar 2011
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From: Some days your the dog and some days your the hydrant.
Royal Canadian Navy
Melting Slicks
Joined: Jun 2011
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1.leaky mc.Repaced.
2.rebuilt calipers.
3.No fluid to left rear caliper.Rubber brake line clogged.Replaced all,frt and rear.Bled and brakes went floor.
4.Purchased one man brake bleeder.Bled all calipers again,brakes okay.Manual brakes no power.
1974 corvette 4spd 350.Has been sitting 30 years.Motor runs.
2.rebuilt calipers.
3.No fluid to left rear caliper.Rubber brake line clogged.Replaced all,frt and rear.Bled and brakes went floor.
4.Purchased one man brake bleeder.Bled all calipers again,brakes okay.Manual brakes no power.
1974 corvette 4spd 350.Has been sitting 30 years.Motor runs.
Get the last bit of air out from the brake master cylinder. - CorvetteForum - Chevrolet Corvette Forum Discussion
Then pressure bleed using something similar to this.
