mickeywheelspin Posted October 4, 2011 Share Posted October 4, 2011 Hi,This may be an obvious problem - but I'm stumped. I've replaced pretty much the entire braking system on the car (new Wilwood master cylinder, callipers, copper lines, discs pads & shoes, etc..) and I've bled through the system with no problems but the brakes seem to be binding and the pedal is rock solid. It seems as though the master cylinder isn't releasing the pressure in the brake lines - is this a common problem? Any suggestions?Thanks in advance.Mike Link to comment Share on other sites More sharing options...
Paudman Posted October 4, 2011 Share Posted October 4, 2011 What pads are you using? I had EBC Greenstuff pads - ONCE - and they were so tight in the calipers (between the fully retracted piston and the disc) they almost stuck to the disc, and as they were so hard wearing they wouldn't wear enough to allow the pistons to move and so free up. Never again. I use softer standard pads these days which aren't as thick when new, and so the piston has to move slightly out when they're first fitted. If yours are new, look at how tight they are to the disc when the piston is fully retracted. It may be there's no pedal feel because nothing is actually moving. Link to comment Share on other sites More sharing options...
alex4wwl Posted October 4, 2011 Share Posted October 4, 2011 Hi, try loosening off the master cylinder to see if the pressure releases, maybe the check valve in the mastercylinder is not releasing,not enough toe board clearanceAlex Link to comment Share on other sites More sharing options...
Jason Posted October 4, 2011 Share Posted October 4, 2011 Have you rebuilt the master cylinder and if so, have you done it right? Using the right diameter seals, etc(apologies if that sounds trite, it wasn't mean to be) Link to comment Share on other sites More sharing options...
Dannyb Posted October 4, 2011 Share Posted October 4, 2011 I had this when I rebuilt mine. but they were ok until I left it parked in the garage for 3 months. When I came back to it I could not press the peddle down it was rock solid. I took the master cylinder apart and replaced the seals which I already did 3 months earlier and all was ok. Link to comment Share on other sites More sharing options...
bob dunn Posted October 4, 2011 Share Posted October 4, 2011 mine locked on , it was the return spring on the pedal Link to comment Share on other sites More sharing options...
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