soft brake pedal
QUOTE=ir3333;1970450853]two pumps and pedal is hi and firm but if i continue to push the pedal hard it very,very slowly goes down.
does this sound like a bad master cylinder or air in the master...i did bleed it before i installed it?
Sounds like you still have air in the system. What you describe sounds like the pedal 'pumps up', meaning it gets firmer after more than one application. If that is the case, then it is definitely, 100% air. The fact that the pedal drops while keeping pressure on it kind of confirms that there is air somewhere. Can't compress a liquid, only gas or 'air'.
I never like when guys give a pat answer like 'bad master cylinder'. Sometimes it can take several tries to get all the air out. Which technique did you use to bench bleed the master and the rest of the system? Might need to do it a few times.
One thing that you might want to consider in regards to the master is whether it is matched to the rest of the components in your brake system, i.e., correct application and/or MC bore size in relation to wheel cylinder/caliper piston area.[/QUOTE]
Air compresses but returns the pedal.
A pedal that continues to fall with pressure is a fluid leak, be it at the brakes themselves or the master cylinder internally.
So if it does truly keep falling and none of the corners or around the master are wet, it's the master cyl.
