Ford Focus Forum, Ford Focus ST Forum, Ford Focus RS Forum - View Single Post - Brake pedal goes to the floor sometimes
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Old 09-10-2012, 01:08 PM   #5
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as usual, it's hard to tell exactly what's going on from a distance....

Releasing & reapplying pressure to the brake pedal is usually considered "pumping", even if only the one stroke is required - and I think you mentioned it going to the floor.....

Was your steady pressure test done with the car running, or with it shut off??

(Brake vacuum booster &/or ABS can change your feel & how the system reacts....)

For example, you can have a QUITE firm pedal with the car off - but once it's running & the booster is functioning, the pedal might not feel so good....

ABS issues COULD come into play, that's why I mentioned the leakage found at the brake cyl. as a confirmation that you actually have an issue there before pulling it apart completely & replacing the master cyl..

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