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I replaced the front calipers and I gravity bleed the passenger side fluid came out but for the driver side no fluid came out. I’m thinking restricted brake hose, I took the hose off the hard line and no brake fluid was coming out. I sprayed brake cleaner inside the rubber hose and it flows out easily. I stepped on the brake pedal a few times and nothing comes out from the driver side hard line. Is this just a bad hard line? or the master cylinder?When everything is all connected I can’t get a hard pedal to bleed the brakes. I checked all the other lines for leaks and none found. Did my master cylinder just crapped out just like that? Before replacing the calipers, the brakes were good and with a good brake pedal pressure and now I can’t get a hard pedal to bleed the brake. What do you guys think? Thanks
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Did you open the bleeder screw before retracting the caliper piston? If not, you probably blew a seal in the master cylinder.
The calipers are new, I removed the hard line from the master cylinder and no fluid came out. I shot some compress air in the port and the fluid came out. So there is some crap or dirt in the master cylinder that was blocking the port. I connected everything and I was able to get a hard brake pedal to bleed the brakes. I want to remove the master cylinder & the reservoir to clean it out. If I take off the master cylinder do I have to bench bleed the master cylinder before reinstalling it?
[quote=”gnx547″ post=141645]I want to remove the master cylinder & the reservoir to clean it out. If I take off the master cylinder do I have to bench bleed the master cylinder before reinstalling it?[/quote]
If you remove the fluid from inside the master (and remove the reservoir), then there will be air in it, so yes, it will have to be bench bled. This is a critical component to the safety of the automobile. I think you would be far better off replacing it than trying to open it up and clean it out.
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