brake problem..

[bobpogoman]

i replaced my brake pads a week ago and waited for my balljoint to come home. ive left 1 of the zert fully open by error and all my brake fluid got flushed out.

the problem is that i can bleed the car correctly...i pump a lot then hold pedal on the floor, open the zert and squeak,oil is coming out.

theres no more air coming out, just oil (after 20mins of pumping the pedal.)

the problem is that the pedal wont come hard, with the car off, its free like hell (kinda like the gas pedal) and when i start the car the pedal is free and start becoming hard almost when the pedal is on the floor.

notice: when i pump i can ear air from my air filter, like if there was pressure/vacuum.

 

[rayall01]

i replaced my brake pads a week ago and waited for my balljoint to come home. ive left 1 of the zert fully open by error and all my brake fluid got flushed out.

the problem is that i can bleed the car correctly...i pump a lot then hold pedal on the floor, open the zert and squeak,oil is coming out.

theres no more air coming out, just oil (after 20mins of pumping the pedal.)

the problem is that the pedal wont come hard, with the car off, its free like hell (kinda like the gas pedal) and when i start the car the pedal is free and start becoming hard almost when the pedal is on the floor.

notice: when i pump i can ear air from my air filter, like if there was pressure/vacuum.

First, did you bleed from all four brake calipers, or just one or two. If you didn't do all four, you will still have air somewhere in the system. If you did correctly bleed the entire system, then it's entirely possible that when you pushed the pedal to the floor, you got some sediment under the piston cups in the master cylinder. Old brake fluid forms a crud, which under the right conditions, can deform the rubber cup, and cause fluid to leak past and not pressurize the brake system. The secondaries are working, which is why the brakes work at all. The sound you describe, could be the sound of the fluid bypassing the cup. If I'm right, and you're lucky, this can be cured by removing the master, removing the piston, cleaning everything in there, putting it back together, and doing a complete system bleed. If you're not lucky, a master cylinder rebuild kit, or a replacement master cylinder will be in order. If you do remove the master, then be sure to check the vacuum booster for brake fluid, in the event fluid is leaking from the rear seal. That condition would also require rebuild, or replacement. The reason you have to bleed all four calipers, is that when air gets in the master, it gets into the brake lines, and flows throughout the system.

 

[termn8r2000]

Just to make sure: Always bleed your braking system from the farthest point from the master cylinder reservoir to the closest (on the MkIII it is this order: Rear Right, Rear Left, Front Right, Front Left caliper). Also any time the master cylinder reservoir becomes empty you MUST bleed the entire system as described above.

 

[rayall01]

Just to make sure: Always bleed your braking system from the farthest point from the master cylinder reservoir to the closest (on the MkIII it is this order: Rear Right, Rear Left, Front Right, Front Left caliper). Also any time the master cylinder reservoir becomes empty you MUST bleed the entire system as described above.

Yes. I was trying to remember all the details, but trying to put it all down in one post I forgot to put that.