owson
New Member
I believe that what I am seeing indicates a new brake master cylinder is needed, but my mechanic says he hasn't seen this precise effect before in his (fairly long) experience with Coupes :
Easiest to see on gentle downhill - let car roll, apply brakes, ease up but do not release brake pedal pressure, roll a bit, re-apply brakes - repeat. When I do this, the brake pedal gets successively closer and closer to the floorboards. Eventually, it seems like I may be pushing the primary piston up against the secondary piston, but I'm not sure. I do not feel the brake pedal sink when applying steady pressure - but only if I do the "rachet" procedure.
Is fluid simply leaking past a seal (internally) ? I can't think of another explanation. Anyone seen this effect ?
Easiest to see on gentle downhill - let car roll, apply brakes, ease up but do not release brake pedal pressure, roll a bit, re-apply brakes - repeat. When I do this, the brake pedal gets successively closer and closer to the floorboards. Eventually, it seems like I may be pushing the primary piston up against the secondary piston, but I'm not sure. I do not feel the brake pedal sink when applying steady pressure - but only if I do the "rachet" procedure.
Is fluid simply leaking past a seal (internally) ? I can't think of another explanation. Anyone seen this effect ?