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Re: clutch pedal goes to the floor on A6 2.8 P 1997
It's a hydraulic system on the Audi. Using a master cylinder (nearer pedal and firewall) and a slave cylinder (at clutch release bearing itself, or on side of tranny. Owner's manual should give location for a reservoir to check. Similar but smaller than brake master cylinder reservoir if that helps. The system uses brake fluid, and you either have a leak, a lack, or a loss of this fluid, and/or pressure to the clutch. Sounds like you need qualified service, these systems need REAL diagnosis before you start buying parts. ALso can be hard to bleed completely free of air after parts are installed.
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`Did it bleed, did fluid come out in a steady stream? Isn't there a spring to bring the pedal off the floor?
Check the linkage of the pedal to rod to the clutch master cylinder, make sure that is all together. Any chance the master has an internal leak and won't build hydraulic pressure down at the slave? If you get it bled, then watch the slave operation while someone works the clutch pedal. The piston on the slave should extend and push the clutch fork enough to disengage the clutch.
Unless you have bled the slave cylinder properly there will still be air in it. However I think the problem is in the clutch master cylinder ---piston rubbers leaking fluid back to reservoir. Replace the m/cyl with new item and bleed out correctly.
Your truck has a hydraulic clutch release system, you have a problem in it due to a leak in the slave or the master cylinder, The slave cylinder which is the one that leaks most often is inside the bell housing and it requires the ****** be removed to replace it.
The hydraulic clutch works much like the brake system, there is a master cylinder with a piston and spring that should keep the pedal up. You may have to take the clutch master cyl off and inspect the internal parts.
may have a large leak in the slave cylinder. do you see fluid dripping underneath te transmission housing? it could have an internal leak but not as common. check the fluid level in the little reservour on the firewall.
Does the clutch pedal offer any resistance? The clutch and brake system use the same reservoir, there is a hose coming out from the side of the reservoir that goes over to the clutch master cylinder. Sometimes the brake fluid level goes low as brake pads wear and lowers the fluid level too low to work the clutch. On the front side of the transmission, is a clutch slave cylinder, check it for leaks, if it leaks replace it. Hope this helps, let me know.
pump up pedal with bleeder locked 6 or 7 times slowly,hold pedal down crack bleeder pedal should sink lock up bleeder before lifting pedal repeat several times should do it also remove bleeder feom caliper to make sure its not blocked