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Sounds like you just have a lot of air in the system. Bleed it thourougly.
farthest from the MC first then move closer..
so RR, LR, RF, LF
that's the way I've always done it.
Proper way to bleed brakes:
use 2 people.
Keep bleed screw closed.
Pump pedal till its hard, and hold pressure on the pedal at the top of the stroke.
yell to buddy to release. He should open the bleed screw about 1/4-1/3 turn, and then close before the brake pedal reaches the floor. You should maintain constant pressure on the pedal. Time for the bleeder to be open is usually less than 1 sec. I usually scream "Open" , and then after my foot passes half way "CLOSE" that way, by the time it registers to my buddy, he is closing the bleed screw before pedal reaches bottom.
Repeat until all air is gone from that corner, and then move to the next corner.
NEVER EVER EVER LET THE FLUID LEVEL GET BELOW "LOW" Top off the resevoir constantly.
Make sure you use a clear hose at the bleed screw to see air bubbles. Even very small ones can affect pedal feel. I also tap my calipers with a rubber mallet b/w openings to make sure any air that could be lodged in the little nooks and crannies get loose.
This takes a long time, and usually takes b/w 1-2 liters for a very thourough flush. Less for just a bleed.
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