Hello,

Both of my rear calipers had frozen slide pins so I decided to just replace both calipers along with the pads and rotors. The repair went fairly smoothly. For the drivers rear, I put a plug in the brake hose after I removed the banjo bolt. The plug didn't fit very well and the hose still dripped a bit.

When I had finished the drivers side,

- I hooked up a hand vacuum pump
- I opened the bleeder screw 1/2 turn
- I tried to put some vacuum on the line, but it wouldn't hold any
- I pressed the brake pedal until fluid came out into the tubing
- I then put on some vacuum with the hand pump
- I pressed the braked pedal a couple of times to make sure fluid was coming out the hose
- I closed the bleeder screw
- I pressurized the brake pedal

All of this seemed to work. I didn't do much of a test other than to go back and forth a bit in the driveway but the brakes seemed fine.

Today I did the passengers rear. Everything went well again with the repair except that I didn't notice that my plug had fallen out of the brake hose. This resulted in more brake fluid in my pan. Oddly, when I checked the reservoir, the level had not gone down, which is a bit disturbing. Some fluid came out of the hose, why did the level not drop at all?

After the repair, I repeated the same procedure as above to bleed air, but I was not able to get much of any fluid to come out into the tubing. There was a little, but I was never able to create any vacuum with my pump and I never got any solid flow. I cannot pressurize the brake system at all with the pedal. It just goes straight to the floor. Again, the level of fluid in the reservoir has not gone down at all even though more fluid has come out of the system.

I am not sure what to do now. I guess I need a more involved bleeding procedure but I don't know where to start. I read the there can be an issue with the caliper piston being screwed in too far so I will try turning it back out so that it is flush with the pad and try again.

Suggestions would be appreciated.

LMHmedchem

 

I tried turning out the piston some as suggested in the post I read. That did not help.

I don't understand why I can't get much brake fluid to come out the bleeder. On the drivers side, I was able to get the tubing solidly filled for 6" or so, and then I closed the valve. On the passengers side, I have just got some intermittent bits to come out. Total there was a 1/4 cup or so. Possibly my little pump isn't any good.

I also don't understand why the level in the reservoir has not gone down as much as I expect given the amount of fluid that has come out.

There is some pressure on the brake pedal when the engine is off. The pressure goes away immediately when I start it up. I don't know if that helps or not.

Also, the brake light comes on after it has been running for a bit. This should mean that the parking brake is engaged, which it is not. I did get the parking brake cables attached, so I'm not sure what the issue is.

LMHmedchem

 

I would try a manual bleed first and see if you get any fluid to come out the calipers. Remember to bleed all 4. R/R, L/R, RF and LF.