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What causes master cylinder leak??

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Old Nov 10, 2005 | 04:45 PM
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.water's Avatar
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Default What causes master cylinder leak??

i have 00 gsr, and my cluch was acting gay for a long time, so i beed day by day to get some stiff pedal feel back. well, today i check under the pedal whats up?, the rubber thing on M/C looked wet, so i touch yes it was wet. it wasnt leak much. it seems like leak very lil by lil. my car only have 40k miles on stock cluch. why this happend to me so early?


*this rubber part shouldnt be wet right??*
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Old Nov 10, 2005 | 04:54 PM
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Default Re: What causes master cylinder leak?? (zzzvtakzzz)

is the clutch fuid black?
Its pretty common from Mc's and slaves to go bad, if you have a stiffer aftermarket clutch the chances of craping out are greater
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Old Nov 10, 2005 | 04:57 PM
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Default Re: What causes master cylinder leak?? (mmuller)

stock clutch, and fluid is not black cause i bleeded before so clear.
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Old Nov 11, 2005 | 03:20 PM
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Default Re: What causes master cylinder leak?? (zzzvtakzzz)

The fact that you have low mileage might not be as important as the years on the clock. Mechanical parts fail, especially if there are rubber seals involved and possibly yours was defective from the get-go. Swap it out and be on your way.
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Old Nov 11, 2005 | 06:13 PM
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Default Re: What causes master cylinder leak?? (zzzvtakzzz)

anymore inputs??? and my other question is, do i lost pressure of siffence on pedal?? when cluch master cylinder goes bad?
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Old Nov 11, 2005 | 09:47 PM
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Default Re: What causes master cylinder leak?? (zzzvtakzzz)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by zzzvtakzzz &raquo;</TD></TR><TR><TD CLASS="quote">anymore inputs??? and my other question is, do i lost pressure of siffence on pedal?? when cluch master cylinder goes bad? </TD></TR></TABLE>

maybe you could re-phrase that question....How many miles are on your car cause that same thing happened to my DC I just have not been able to fix yet.
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Old Nov 12, 2005 | 09:42 AM
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Default Re: What causes master cylinder leak?? (eL_cArLos)

LOLz you guys read the post at all? 40k miles.

well. i guess its somthing to do with the cluch too. since someone said siffence pedal is nothing to do with M/C, its something to do with the pressure plate.
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Old Nov 12, 2005 | 01:40 PM
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Default Re: What causes master cylinder leak?? (zzzvtakzzz)

here is the update pic..can you tell something from this pic?



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Old Nov 12, 2005 | 02:22 PM
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Default Re: What causes master cylinder leak?? (zzzvtakzzz)

i dont see any brake fluid...it there any?
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Old Nov 12, 2005 | 02:46 PM
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Default Re: What causes master cylinder leak?? (mmuller)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by mmuller &raquo;</TD></TR><TR><TD CLASS="quote">i dont see any brake fluid...it there any?</TD></TR></TABLE>

that rubber part is wet and when i touch it with finger tip, there is clear fluid on my finger tip. it shouldnt be any wet at all right??
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Old Nov 12, 2005 | 03:04 PM
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Default Re: What causes master cylinder leak?? (zzzvtakzzz)

no; it should not have any brake fuid on it. take out the little rubber dust seal and see how much fluid is in there.
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Old Nov 13, 2005 | 06:42 AM
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Default

in regards to using dot 3 or dot 4 fluid as the top of the cap says, to fill the cap would putting dot 3 or dot 4 make a difference.. do they both mix i have the same prob which i am in the middle of fixing but in the meantime i need to refill the resevior but am not sure what fluid is in there now
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Old Nov 13, 2005 | 09:59 AM
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Default Re: (kupras)

Dot 3 and Dot 4 fluid mix.

behind that seal cover there should be grease, but not enough for it to be leaking out on the floor. Pop it off and look for brake fluid. Better yet clean off the rod, and inside the seal, but make sure there is some grease inside. Then drive it around for a day or so and check it.
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