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1988 Fiero 4 Cylinder Clutch Diagnosis?
06-05-2014, 11:40 AM
Post: #4
 
You got the right answer.

When you press the clutch, it pressurizes the brake fluid in the clutch line. If it leaks past a seal in the master or slave (or there is a leak in the tubing but that is rare) the line slowly depressurizes and the clutch reengages.

Because of your other symptom (multiple presses needed) there is a good chance that it is in the master cylinder. If the pumping seal is not working well, it will not push as much fluid as expected.

You may also have an air bubble in the line that makes it worse.

1. Bleed the line. There are many sets of instructions out there to do that.

2. See what happens.
If the master cylinder is full of fluid and air appears, the leak is more likely in the slave cylinder. It can suck in air as you release the clutch.
If no air appears and the problem comes back (most likely it will), look at the master cylinder.

If the fluid level in the master cylinder is going down, look for evidence of fluid by the push rods for the cylinders. The carpet inside the car tends to hide leaking fluid from the master cylinder.

I am curious about the Facebook page you found. I am always interested in new sources of information.

The two major forums for Fieros (you can discuss issues much better in a forum setting) are the Yahoo Fiero Group (http://www.fiero.nl)
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Messages In This Thread
[] - hornchurchmale - 06-05-2014, 11:17 AM
[] - Hugo90 - 06-05-2014, 11:27 AM
[] - Fun Skater - 06-05-2014 11:40 AM
[] - thebax2006 - 06-05-2014, 11:48 AM

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