BIG issue after Brake Master Cylinder replacement....grrr
#15
Be sure the bleeder screw at the calipers is opened fully, or about 1 turn open ....
to allow enough fluid flow rate to carry the trapped air in the system to the calipers. If the bleeders are not opened enough, the flow rate will be to low, and won't purge the air completely.
#16
Re: You got the Power-Bleeder?
if you can pump up the pedal then you definatly have air in they system!! Keep bleeding! sometimes it takes a long long time to get the air from the master cyl. out of the system..also you have to bleed from closest to furthest on out cars which is not normal so LF, RF, LR, RR and just keep bleading...if you still dont get anywhere you can bench bleed the master, just crack the lines on the master, push the pedal down and while you are holding the pedal down have someone close the line.
#17
Keep bleeding
if you can pump up the pedal then you definatly have air in they system!! Keep bleeding! sometimes it takes a long long time to get the air from the master cyl. out of the system..also you have to bleed from closest to furthest on out cars which is not normal so LF, RF, LR, RR and just keep bleading...if you still dont get anywhere you can bench bleed the master, just crack the lines on the master, push the pedal down and while you are holding the pedal down have someone close the line.
#18
I am not familiar with the necessary steps to follow when replacing MC in our cars....
it's been many years since I did one on any car. Do you know if our cars require the replacement MC to be bench bled prior to installing on the car? That's what I used to do on dual reservoir metal MC's on American muscle cars.
#20
AudiWorld Senior Member
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I definitely have air in the system still, lots of it...
bled 3 motive bleeder containers full of fluid last night through the calipers and the bubbles would not stop. I am going to try to crack the lines at the MC and the lines at the abs / hydro pump and bleed that way. Might get messy though. Is it better to do this with the bleeder or by having someone press down on the pedal?
Thanks for your reply!!!
Thanks for your reply!!!