http://www.geocities.com/ng900set/BrakesR/rear_pads.html?200728 an excellent tutorial on the rear brakes... on bleeding do the fronts first .....do not pump the pedal....too risky..new93owner said:I have a 1999 9 3 and i just replaced the rear brake pads, I never bled the system and now my brake pedal is very mushy, how do I go about fixing this and how do I bleed the system.
So a solvent has been pushed through the calliper? This stuff has no real hydraulic performance at all and must be totally purged from the circuit before your brakes will work.new93owner said:I also made sure that all the fluid passages in the callipers could flow by spraying brake clean through which it went in the one hole and right out the other
+1, you’re going to have to replace all the fluid with new stuff. Remember, any thing in the brake lines other than brake fluid is very bad. Brake fluid has to have a high boiling point, maintain viscosity, absorb any moisture, and lubricate at the same time.ragtopcav said:So a solvent has been pushed through the calliper? This stuff has no real hydraulic performance at all and must be totally purged from the circuit before your brakes will work.
Brake fluid is a powerful solvent and is the only liquid that should ever be in the system..... I have run across clogged bleeders; a few minutes with a probe and some compressed air does the trick.new93owner said:Also the calipers are very corroded. I'm debating on saving some money and just buying all new calipers and rotors since the car has over 80,000 on it. Any suggestions?
The brake master cylinder cap is supposed to be vented - this may need to be cleaned now and again - it is a tiny vent hole...When working on the brakes(retracting the pistons) the reservoir cap should be off - and the level not over-filled; otherwise a mess occurs...new93owner said:Ok so I will replace all my fluids in it, but I'm still wondering why I couldn't pull any fluid through when I was trying to bleed it. I've never really worked on brakes besides my mustangs.
I live about a half hour north of Madison is Sauk City.
Errrrr, sorry,;oops: I meant the cosmetic areas, at all of the contact or machined surfaces ,the metal must be clean and smooth, without rust and properly protected with a little hi-temp grease..:cheesy:ragtopcav said: