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Master Cylinder question

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Old Sep 6, 2008 | 04:17 PM
  #1  
grub-2001z28's Avatar
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Default Master Cylinder question

I've been going step by step through my stuck pedal woes, and I'm in need of some advice on the master.

I flushed and bled the lines, no improvement at all, so the next thing I'm looking at is the master. I recall reading somewhere, not sure where, that if you pop the quick disconnect from the slave that the pedal would be very firm. This is the case for me. I am not able to depress the clutch at all with the line to the slave disconnected. This shocked me as I was nearly convinced it was the master and I was expecting the pedal to be soft.

Does this mean that my master is likely not faulty at all and the slave is the culprit?

Thanks
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Old Sep 7, 2008 | 01:14 AM
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I have seen that test not to be so accurate sometimes.
When the master is moving down the bore & displacing fluid it can act differently is the only thing I can surmise.
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Old Sep 7, 2008 | 07:02 AM
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Interesting. Are there any tests to see if the master is faulty or is it pretty much just replace it and see if that helped?
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Old Sep 7, 2008 | 10:50 PM
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Pretty much rule of thumb, if the slave isn't leaking & you cannot build pressure replace the master.
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