JackieChan Posted May 23, 2008 Report Share Posted May 23, 2008 hi all, I'm trying to replace the brake master cylinder on my 1999 Cadillac Seville STS. When I first took it off the bulkhead, I was able to move the master cylinder around full of brake fluid and nothing would leak. Since then, I have had to remove the master cylinder a few times. The last time I took it off, the thing was leaking through the female brake line female ports. I went to the local auto parts store and picked up a reman master cylinder. The reman suggest I do a bench bleed. When I first fill the master cylinder with brake fluid and put the mc in my bench vice, the master cylinder doesn't leak. I follow the instructions exactly from the book and from the reman instructions, I give a few long presses on the piston to let most air out, i then do repeated small strokes. When I get all the air out... I take out the drain hoses fromt he resevoir and the brake fluid is leaking out of the hoses. If I point the hoses down, the resevoir will completely empty. This is the 2nd master cylinder i bought from the auto parts store that has done this after I was done bench bleeding. Am I bench bleeding wrong? Can someone please HELP me? THANKS! Link to comment Share on other sites More sharing options...
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