Ok so I am trying to bleed the brakes on the bonne and I have a problem.


The passenger side caliper was no problem I bled it like normal but the drivers side caliper won't bleed. No fluid will come out of the bleed valve but fluid is squirting straight up the resivour from the master cylinder.

What does this mean????

The piston on the drivers side caliper is moving and I can see fluid in the caliper when I remove the bleeder valve but no fluid comes out of the valve when I press the pedal.

Do I have air in the master cylinder and need to bleed that too, is my master cylinder screwed up or is my brand new caliper rebuilt screwed up???


Help please.

Having to bleed the master isn't that common. I'd go through 3 or 4 cycles. RR, LR, RF, LF, and all over again, keeping the reservior full at all times. Use a helper for damn sure.

Are you sure bleeder screw isn't plugged???

I am going to put the old caliper on tonight and try to bleed that one to see if it is the caliper or the master cylinder.

I don't think the bleed screw is clogged because i completly removed it and still no fluid would come out and i can see fluid in the passageway under the screw.

If you were to take the caliper off the rotor, pump the brake to move the piston out, and then try to push it back in with the bleeder screw out -> it should push some fluid outthru the screw. If nothing is comming out, but rather all going back up to the master cylinder, I would have to say that the caliper is bad, and that something is internally blocked in it.

On a similar note: If you have the caliper off, you most likely should be able to just tip it upside down and see if anything comes out. If nothing comes out - then somethings messed up.

Will be checking all that sometime in the next couple of days hopefully it is not a brake line problem :(

Well i put the old caliper on and it worked just fine.

The caliper I bought must have been bad.