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Go Back   REVscene Automotive Forum > Technical Discussion > Maintenance, Engine & Driveline Tech

Maintenance, Engine & Driveline Tech This forum is brought to you by The Speed Syndicate (TSS) in Burnaby.
Discussion of maintaining your engine, transmission, differentails, rear ends, and mods associated with "driveline" parts..

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Old 04-21-2009, 09:04 AM   #1
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Clutch Problems

So I've got an issue that I'm having trouble diagnosing. For the past couple weeks, my clutch pedal's engagement level has slowly moved from the top quarter to right above the firewall/floor. Unfortunately, yesterday after work, the pedal finally decided to stay down after work yesterday and refused to come automatically back up. Visual inspections of both the slave and master cylinders yielded nothing, and an attempt to bleed the lines came up with the same result. Fluid levels were also fine. There was also no slippage of the clutch at any point. One thing we noticed was that the fork on the transmission that the slave move against (sorry, not sure what the actual name for it is) appears to be sitting further to the right side of the car than normal. There's no back and forth free play, only up and down slightly. So I'm going to finish pulling the transmission out of the car today and see if I can see if anything looks physically wrong. Asides from that and checking out the PP, is there anything else I could check?

'93 KL-series engine (2.5 V6)
Hydraulic driven
Clutchmaster Dualforce Friction Clutch (10 months old w/~25,000km's).
OEM Probe GT flywheel
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Old 04-21-2009, 07:48 PM   #2
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Can you remove the starter and inspect the pressure plate bolts for tightness.
If the clutch fork is sitting out of position it could be bent. Not uncommon for high mileage forks and/or heavy duty pressure plates.
You can check your hydraulics with 2 people by having someone under the car to verify that the fork moves the instant you press the clutch pedal.
It is also possible for a master cylinder to fail without leaking fluid, which is why i think having a buddy make sure the slave is moving is a must.
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Old 04-22-2009, 11:13 AM   #3
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Sounds like an issue with the slave cylinder to me, had one go on me and it was the exact same thing, clutch pedel on the floor and it wouldnt return.
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Old 04-22-2009, 04:07 PM   #4
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Sounds hydraulic. Could be slave or master internal seals leaking.

If it was the pressure plate, you'd notice slipping.
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Old 04-22-2009, 05:41 PM   #5
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So my bad. It did end up being the slave cylinder. Was just impossible to spot the leak without having a second person pushing the clutch pedal while the other opened the boot and watched for a leak. Ah well, easy enough fix!
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Old 04-28-2009, 09:21 AM   #6
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at least urs didnt go while ur car was parked underground at costco while u attended a canucks game.

- lowered car + underground parking lot = tough time for a tow truck to get out. flat bed is too high, and regular tow truck cant hang ur car too high off the ground for fear of the ceiling.
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