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Old 09-08-2003, 12:23 AM   #1
Ken
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Question Sticky clutch pedal

My MY99 RS had it's master and slave cylinders replaced because the clutch wasn't engaging properly. Clutch has ~25,000 km's on it. It engages great after replacing the parts. The thing I'm noticing though is that when I redline RPM shift and change gears quickly (fully clutching in, change gears, clutch out but doing it fast) the clutch pedal is slow to come back up. I can release the clutch pedal faster than the pedal itself will come back up. I'm thinking I just need to lube the clutch pedal up a bit but it's not squeeking or anything. Anyone had any similar problem with the pedal (but with no engagement problems)?

Proly just hit the pedal with some WD-40 later to try and see.

Thanks,
K
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Old 09-08-2003, 09:50 AM   #2
goobie
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Default How long ago?

When was the slave replaced? Recently? If so try a re-bleed.
If its been a while, Sadly the slave might need replacement again!
I'm on my 3rd


Cheers,
Chad
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Old 09-08-2003, 10:09 AM   #3
cvalle-sd
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I think you need to bleed the fluid again - mine has done that when it got a little moisture in the mix, or hasn't been changed in a while. Get some Motul 600 from a motorcycle shop or something.
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Old 09-09-2003, 12:50 PM   #4
Ken
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Yeah, sounds like a bleed is a good try. The master and slaver cylinders were both replaced about 2,000 km's ago so they're both brand new!

I didn't bother lubing the pedal up to see since when i'm playing with the pedal while in neutral the thing feels perfect. I'm booked in for a rebleed at the rally shop. Thanks.
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Old 09-09-2003, 01:56 PM   #5
Opie
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Did you replace the clutch fluid line? There is a SOA TSB out regarding the clutch fluid line material degrading and contaminating the clutch fluid causing the slave cylinder to bind.

Do a search with my user name and slave cylinder in the tranny forum and you should find it.
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Old 09-17-2003, 06:47 PM   #6
Ken
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I had a TWRacing SS clutch line installed this morning since I didn't want to chance it. It was hella cheap anyways. The oem line didn't look that great anyways and is a longer line than this SS line I got. So far the clutch is engaging great.

So that is all I can think I can replace: master & slave cylinders, and now clutch line. Hopefully it'll remain working good.
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Old 09-17-2003, 10:07 PM   #7
kturner
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So, is it the clutch line material that's causing the black sediment in my master cylinder? Jeez, how long have people been making hydraulic clutches and how is it possible not to check material compatibility?
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Old 09-17-2003, 11:36 PM   #8
Ken
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My mechanic didn't say anything about the fluid being dirty from the line. The line itself just looked old, so I didn't chance anything and got them to swap in the SSteel line for a mere $50cnd.
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Old 09-30-2003, 09:21 PM   #9
imprezaRS420
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lube the slave cylinder bearing with grease

I have the same problem with my car, but lucky me, I work at a subaru dealership in Charleston, SC.

I asked one of the Tech's and he said that the grease would solve the problem.
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Old 10-01-2003, 11:05 AM   #10
goobie
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Quote:
Originally posted by kturner
So, is it the clutch line material that's causing the black sediment in my master cylinder?
Yup! I changed my line a couple of months ago. My fluid has been clean ever since. Before, with the old line, I could completly flush the fluid one week and the next it would look like someone sprinkled pepper in the there!

Quote:
Originally posted by imprezaRS420
lube the slave cylinder bearing with grease
I assume he means lube the cylinder/piston as there is no bearing in a slave cyl. If you do decide to do this, make sure you use a very lightweight lubricant. I tried a heavy grease on one of my older slaves (I'm on #3) and it seems to cake-up with dirt and grime after a while which just made things sticky...

My 2 cents.

Chad
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