This was my second time changing the rotors and calipers so I thought no biggie, Its not leaking fluid but so something is different this time. I changed the rotors/calipers last week and bled the system but the pedal goes to far and stopping is poor so I thought there is still air in there somewhere and bled them again today but still the same. I've been looking thru the archive and Ogres cave trying to come up with the solution. I'm thinking the master cylinder since its still original and when you push the brake pedal most of the way down you can hear a mechanicle clunk/click in there somewhere, other things to consider, I had all four calipers off and the system drained completely at the at the master/reservoir, the e-brake needs to be adjusted since I havent used it for years. Any thoughts
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11:26 PM
PFF
System Bot
kendallville Member
Posts: 960 From: kendallville,In,USA Registered: Aug 2009
i had the same problem with my 87 changed the master problem solved, was told if it wasnt that it could have been the booster but glad i got it right on the first try. good luck.
It’s very possible that when you bled the brakes you damaged the master cylinder. Because with normal braking, the master cylinder never travels more than a ½ or so, the inside of the cylinder (past the ½ mark) builds up a layer of corrosion. When you bleed the brakes and push the piston (with the seals on it) into this corrosion area it can damage the seals and they will start to leak. With all of that I would also adjust the rear brakes. To do this correctly you need to back off on the parking brake adjustment, adjust the brake caliper and then re-adjust the parking brake. Also, you should use the parking brake as it keeps the rear brakes adjusted (before releasing the brake, hold you foot and the brake pedal and when you release the P-brake it adjusts the caliper).
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11:40 PM
Mar 4th, 2012
Gokart Member
Posts: 4635 From: Mashpee, Ma. USA Registered: May 99
If you still have original rubber lines consider changing to a set of stainless. I too had 88 spongy brakes and it was a world of difference after swapping.
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07:51 AM
Electrathon Member
Posts: 5241 From: Gresham, OR USA Registered: Dec 2002
This started after you changed calipers, common sence says start there. Your complaint is exactly the complaint if a rear caliper is out of adjustment. It is likely you have a stuck parking brake adjuster or set your park cable too tight.
Easy test is to move the lever on the caliper by hand. If it fully strokes, then the piston adjuster is stiuck. Best to do this test with the park cable loosened.
