Clutch Peddle looses pressure (Page 1/1)
WE6A JUL 19, 12:41 PM
After a long ride, the Clutch Peddle looses pressure. I can pump it up by repeated pumping, but it still keeps loosing pressure. Is it:

1) Air in system needing bleeding
2) Needs new Master Cylinder
3) Needs new slave Cylinder

Thanks for looking

Bob 1987 Fiero GT
theogre JUL 19, 12:55 PM
Looses pressure w/o leaking is MC problems.

Look under dash or even Pull down carpet and make sure Clutch MC not leaking inside of car. May not leak bad that you need to add fluid but any leak = bad MC too. (Brake MC can leak where bolted to the booster.)

Air in the system may need to pump pedal to work but should hold pressure after as long as you keep pedal down to block port holes in MC bore.

------------------
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(Jurassic Park)

The Ogre's Fiero Cave

fieroguru JUL 19, 12:59 PM
If the pressure comes back once it cools down, it is an air bubble.
When it gets hot, it expands and becomes more compressible, when it cools, it becomes smaller and less compressible.
WE6A JUL 19, 09:17 PM
That's exactly what happens. When it cools down, the pressure is perfect again.

Thanks for the tip.

Bob
Patrick JUL 19, 10:21 PM

If after you bleed the clutch hydraulics, and you continue to have issues due to a worn slave (very likely) or master cylinder, make sure to check out what Rodney Dickman has for our cars. Seriously, he has the best clutch master and slave cylinders you can buy for a Fiero. And no, I don't work for him.