S2000 Under The Hood S2000 Technical and Mechanical discussions.

FINALLY

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Old Sep 5, 2011 | 10:43 PM
  #1  
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Finally found out that there is a leak inside under the pedal which is the master cylinder? (correct me if im wrong) so if thats the case do i just go buy a new master cylinder and go to a shop? or would i need to purchase more items? anyone help? wit a link to buy? and what other parts i will need?
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Old Sep 5, 2011 | 11:47 PM
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usually flushing the clutch fluid will stop the leaking, i would try that first.
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Old Sep 6, 2011 | 12:56 PM
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I just had to change mine. Pedal got a little mushy and the shifter became a little finicky at first. It quickly degraded into a limp pedal and a very very very stiff shifter.

Fluid change might do it, but I suspect if you are leaking fluid a new clutch master cylinder is in order. As for the procedure, I'm not so sure about that, but my mechanic charged for the cmc, fluid, and labor. I'm sure you could get it done cheap if you diy. I've heard cmc price ranges from maybe 75-150??
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Old Sep 6, 2011 | 01:13 PM
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I replaced mine as well, didn't try to replace the fluid to see if it fixed it. Mine was leaking onto the carpet and had a bit of play when you first touch the pedal.

Bought a replacement at a Honda dealer - was about $95 or so. Pretty straightforward to change out - there are basically two bolts and a hose. It was a pain to get the new fluid in and any air out, you have to get under the car to open up the valve at the slave.
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Old Sep 6, 2011 | 01:15 PM
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When you go to bleed a slave I found that it helps to have the drain hose in a half full bottle of fluid. This way you can see the air bubbles coming out and know when to stop bleeding. It also keeps it from sucking air back up.
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Old Sep 6, 2011 | 01:27 PM
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Well i did a bleed about 4-5 months ago. The clutch went back to working order and after 2 months it went back to shitty soft pedal so i bled the clutch AGAIN. and now i just felt like there was a leak and my boys brother found it.
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Old Sep 6, 2011 | 01:49 PM
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95% of s2k cmc's leak due to dirty fluid.

Change the fluid, keep it clean, the leaking will stop.

No need to bleed. just change whats in the resovoir.
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Old Sep 6, 2011 | 04:56 PM
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Originally Posted by Billman250
95% of s2k cmc's leak due to dirty fluid.

Change the fluid, keep it clean, the leaking will stop.

No need to bleed. just change whats in the resovoir.
Just suck the fluid out and refill? Or do you mean drain and fill? Saying not to bleed has me confused.
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Old Sep 6, 2011 | 04:57 PM
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I say go ahead and change the cmc and csc while you're at it. They are cheap (Only $120ish for both) plus some Dot3 brake fluid, and the install it's super easy. You'll have a nice feel in your clutch pedal after that.
It's not worth playing catch with it, and letting to the point where there is no resistance in your clutch pedal... crappy feel, and potentially damaging to your clutch all together.
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