master cylinder problems

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master cylinder problems

Post by kokodabobo on Thu Apr 26, 2012 12:16 am

i just replaced my master cylinder with one i bought at BAP. i bench bled it and i get brake fluid coming from the front right hole but the left front and rear ports just push out air. i have a dual circut MC. my resivior is full and i cant figure out why fluid isnt getting all the way through the MC to the back of it (the side closest to the pedal). i havent messed with the push rod, and i dont think ive did anything incorrectly. any help would be greatly appreciated.


thanks,
Kodie
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Re: master cylinder problems

Post by pwmcguire on Thu Apr 26, 2012 8:50 pm

Did the old master cylinder work at all?
There could be other issues if it didn't.
May be your sucking in air from somewhere
There should be about 5 mm of play in the pedal before it engages the MC
you can look here for alot of information
http://www.vw-resource.com/adjstrod.html
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Re: master cylinder problems

Post by Bugman114 on Thu Apr 26, 2012 9:36 pm

did ya check the rubber hoses that go to the resivoir? maybe one is broke, or maybe pinched. also the metal lines. maybe kinked?
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Re: master cylinder problems

Post by kokodabobo on Fri Apr 27, 2012 4:00 am

thanks fopr the input pat and bugman. the old master cylinder worked, it was just stiff. i bought this new one from clyde at BAP. i think i just got a bad one. it looked brand new and i got fluid from the resivoir down the hoses to the MC but it wouldnt go through it. so i went and bought another new one and installed it last night. it workes fine. If anyone is interested in having one to rebuild i have one now. looks brand new it just has some kind of blockage in it. thanks for the help guys
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Re: master cylinder problems

Post by Clyde on Sun Apr 29, 2012 8:04 am

Save the box and bring it to the AMS show for a refund. My supplier wants to see it. I'm very sorry about your wasted time Mad
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Re: master cylinder problems

Post by kokodabobo on Sun Apr 29, 2012 8:25 am

hey man i appreciat it. yeah i just figured sometimes bad ones come through. and its never wasted time at a vw show. i enjoied my time there.
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Re: master cylinder problems

Post by Clyde on Sun Apr 29, 2012 6:16 pm

I meant wasted time installing crap that doesn't fix the problem.

A VW show is always a sound investment of one's time.
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Re: master cylinder problems

Post by kokodabobo on Sun Apr 29, 2012 7:56 pm

haha, got ya. but yeah it wasn't a big deal i just couldn't figure it out and thought i waxs doing something wrong. but i enjoy working on my bug even if what im putting on doesnt work, its never a bad thing to get a little greasy under a bug
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