Topic: brake problems
in Forum: C3 Driveline Components
I have a 1981 vette and having pedal fading after about 60 miles. I seem to lose about 1/4 in of fluid from the rear of the master cylinder.there is no sign of a leak at all of the lines and hoses.i have replaced everything from the master cylinder back.all new preformed lines, hoses,proportional valve.all new calipers,pads,and hand brake cables.the only thing I didn't replace were the rotors. it is an ongoing problem.when the pedal fades,i look at the master cylinder and it is low,with no sign of fluid again. when I bleed the line I get air at the left rear inner bleeder and a little air at the left inner bleeder. the rest of the bleeder it is all fluid,no air. I don't know where to look.i am totally frustrated. HELP PLEASE!!!!!!!!!!!!
BILL
|UPDATED|3/27/2014 6:06:35 PM (AZT)|/UPDATED|


Moderator
Warped rotors can cause air in the system, no matter how many times you bleed it. With the springs behind the pistons of the calipers, the brake pads run against the rotors all the time. If a rotor is warped, the piston(s) will move in-out in their bores while driving, creating what is basically an air pump.....it will suck air into the brake system.
I think you prolly have 2 separate issues, and not just one causing your problems.

|UPDATED|3/28/2014 9:42:56 AM (AZT)|/UPDATED|
Joel Adams
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