Clutch engaging point moves down the longer i hold the clutch in
09-12-2010, 05:51 PM
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Clutch engaging point moves down the longer i hold the clutch in i have a 1995 formula and i was driving to a car meet and i had the car in first and it started moving forward while i had the clutch to the floor.. and since then its a pain to drive, i have to push the clutch quickly and get it in gear and let it out quickly and the point where it engages moves lower and lower to the floor to the point where it will move forward with the clutch to the floor .. it loses pressure within 4 seconds.. i think it needs to be bled so i bought the mity vac and it didnt work .. im not sure if i need a new slave cylinder or what. any ideas of what it is or could be? 
Thanks Luke
Thanks Luke
09-12-2010, 06:02 PM
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I would bleed the system first but sounds more like a part failure to me. Check you fluid level and see if any is missing. If it is, then the slave is most likely bad. On an LT1 that should be easy enough to see first hand. If there is no fluid loss, then it sounds like the master is bypassing internally.
09-12-2010, 08:22 PM
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Fluid is being pushed around the seal inside the master. When you push the pedal, the pressure from the clutch is pushing the fluid around the first seal and the second is catching it so you wont see it leak inside the car. Once the fluid bypasses the first seal it is no longer under pressure and is basically recycled into the reservoir and the pedal will drop. Depending on how bad the seal is damaged will obviously determine how fast it will bleed off. Most likely, it will just continue to get worse.
09-12-2010, 08:32 PM
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To be honest, I'm not an F-body guy. I'm sure there are places to buy just the seals but I have never rebuilt one. I have done some work on the master for my caddy but they are different bore sizes. Most of the time people just replace the master with a new one considering they are fairly cheap to replace. Did you try bleeding the system and check for fluid loss?
09-13-2010, 07:52 PM
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i checked the fluid and its fine.. it might have dropped a tiny bit but nothing substantual.. i bled it with the mity vac 3 or 4 times and it didnt work i did that last saturday sep 4th..
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09-14-2010, 12:43 PM
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If the pedal is dropping, when compressed over time, the you are certainly seeing a leak, be it internal or external. This is allowing pressure to bleed off which in turn allows the clutch to re-engage.
You won't see any excessive loss of fluid if you are bypassing within the cylinder though so you can't really use fluid-loss to determine if there is a problem. There is no way to meter the fluid level during usage, while driving, safely. The Master would ideally be replaced to solve the issue. Let me know if you have any further questions. Thanks,
You won't see any excessive loss of fluid if you are bypassing within the cylinder though so you can't really use fluid-loss to determine if there is a problem. There is no way to meter the fluid level during usage, while driving, safely. The Master would ideally be replaced to solve the issue. Let me know if you have any further questions. Thanks,
