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Posted on Jan 02, 2017
Check out this link & read about combination valve & how to center it when bleeding.
Posted on Jan 23, 2009
Honestly your guess is as good as mine. But I don't think the master cylinder is NOT bad you still have air in the system. Get a big bottle of brake fluid bleed all four sides until you run out of fluid or your brakes work properly. You should divide the bottle's content in four, then use each quantity in each side. You'll be removing air and contaminated fluid from the system. Get a small hose that fits on the bleeders and an appropriate container. I have a good feeling if you do this your brakes will work just fine. I don't know how you are bleeding the brakes. I'll let you know the proper way just in case. This is a two man job, with the wheel off, have someone start the car. Have them pump the brakes a few times to get pressure. 1With the brake pedal UP open the bleeder, 2then have your assistant press the brake pedal all the way down and leave it completely pressed down. 3Close the bleeder valve, once close and only with the valve closed have'm release the brake. Repeat as necessary, bake depressed, open valve first then press brake. DO NOT depress until valve completly closed. Close valve THEN depress. Good Luck!
Posted on May 15, 2009
Why were the brake lines replaced?
Sounds like the mastercylinder may have run dry. You have to bench bleed the master and then DO NOT allow fluid to run low, while bleeding brakes...
if master cylinder runs low on fluid and air gets in, almost impossible to bleed with out releasing the lines and bleed master it self.
Posted on Sep 20, 2009
Even if the proportioning valve is wide open the rear brakes should not lock up, this is indicative of the front piston not working on the master cylinder, if there was a problem with the abs it would throw a code so to check use two people to do this one to apply the brakes and one to tun the wheel. apply the brake gently while turning it by hand with all 4 wheels off the ground, if the wheels stop at the same time for all for wheels then you have another problem, Do this with the key on engine off in neutral. It sounds like you have a problem with the primary brake shoe the front of drum brake in rear or if disk then the disk brake. Check to see if the Emergency brake cables are not binding if the e-brake is disc the wire cable where the wheel splitter is may be frayed and is keeping the emergency brakes applied and causing this to happen. If this is not explained in a way you can understand post a reply and tell me to clarify if you don't understand what I am saying. The reason I say to do it without running is it will not use the ABS system to mess with your results this will test the mechanical area, thats where i think the problem is. If you let to much fluid drain out it is possible when you started bleeding the brakes if you did not bleed the fronts first you may have damaged the master cylinder piston seal for the disk brakes.
Posted on Dec 01, 2009
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