spongey breaks
Thread Starter
5th Gear
Joined: May 2016
Posts: 5
Likes: 0
spongey breaks
just changed rotors and shoes on my 2005/z51 washed all old fluid out with fresh lucas synthetic dot 3 I also took calipers off and gave them a fresh paint job after installing everything and bleeding brakes I'm having to pump the pedal for the breaks to come back to me
a ideas on what is causing to loose pedal?
a ideas on what is causing to loose pedal?
Melting Slicks
Joined: Dec 2013
Posts: 2,237
Likes: 220
From: Akron Ohio
2017 Corvette of Year Finalist
2016 C5 of Year Finalist
just changed rotors and shoes on my 2005/z51 washed all old fluid out with fresh lucas synthetic dot 3 I also took calipers off and gave them a fresh paint job after installing everything and bleeding brakes I'm having to pump the pedal for the breaks to come back to me
a ideas on what is causing to loose pedal?
a ideas on what is causing to loose pedal?
Racer
Joined: Jan 2010
Posts: 289
Likes: 13
From: San Jose CA
First, be sure you did bleed the system correctly. Second, if you didn't re-install the calipers correctly, then you can not bleed the system completely. The valve of the calipers must be installed pointing up not towards the ground. So double check your installation. Re install if necessary and then bleed the system again. Third, If when removing the calipers you allowed the fluid to leak out, and didn't plug the brake lines, you may have removed fluid from the ABS system and simple bleeding may not get the trapped air out.
Race Director
Joined: Apr 2000
Posts: 15,344
Likes: 4,009
From: Texas
Tough break. In general, what you describe is always a result of air in the brake system.
You did replace the crush washers when reinstalling the brake lines correct? Have to be careful and correctly torque the banjo fittings with those new crush washers as well. Failing to do so can result in a break in the seal allowing air in the system and the brake pedal will be soft.
You did replace the crush washers when reinstalling the brake lines correct? Have to be careful and correctly torque the banjo fittings with those new crush washers as well. Failing to do so can result in a break in the seal allowing air in the system and the brake pedal will be soft.
Team Owner
Joined: Mar 2008
Posts: 21,502
Likes: 461
From: Southern Utah
First, be sure you did bleed the system correctly. Second, if you didn't re-install the calipers correctly, then you can not bleed the system completely. The valve of the calipers must be installed pointing up not towards the ground. So double check your installation. Re install if necessary and then bleed the system again. Third, If when removing the calipers you allowed the fluid to leak out, and didn't plug the brake lines, you may have removed fluid from the ABS system and simple bleeding may not get the trapped air out.
Race Director
Joined: Mar 2010
Posts: 16,873
Likes: 5,329
From: T-Town WA
2016 C6 of Year Finalist
Too funny, jmac! 
Bleed them, and do it in sequence. Your brakes are split down the center line of the car...RF & RR from one reservoir, LF & LR from the other. Bleed rear, then front on one side, repeat on other.
Bleed them, and do it in sequence. Your brakes are split down the center line of the car...RF & RR from one reservoir, LF & LR from the other. Bleed rear, then front on one side, repeat on other.
Last edited by ruxvette; Sep 27, 2016 at 10:57 PM.
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Burning Brakes
Joined: Aug 2014
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From: Tampa FL
Don't mean to stick nose in but. My understanding the sequence is
RR,LF,LR,RF .... Bleeding inside port first then outer port for each caliper
Just my understanding.....Luck ....OP
Race Director
Joined: Mar 2010
Posts: 16,873
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From: T-Town WA
2016 C6 of Year Finalist
Sorry 'bout that.
Pro
Joined: Jan 2015
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