BMW E30 clutch feel lost and slave cylinder
The E30 clutch feel disappears and the fluid reservoir empties - what is wrong?
The most likely cause is a leaking slave cylinder. It comes off its bracket with two 10 mm bolts. Replace only the slave cylinder first; the clutch disc is renewed only if the clutch starts to slip.
How do I reach the slave cylinder's upper nut in the tight space?
You need a 13 mm socket, a 125 mm extension, a universal joint, a 250 mm extension and a ratchet. With these you can reach the nut in the tight space.
Does the M42 engine have a dual-mass flywheel?
The model with air conditioning has a dual-mass flywheel; without air conditioning it has a normal solid flywheel. If the flywheel is changed, the clutch must be changed too, because the thick clutch assembly does not fit with a dual-mass flywheel.
Why does the clutch on a 325 only release when the pedal is almost on the floor?
The cause may be that the release bearing does not release properly. The release bearing from an E21 323i is about 5 mm taller and helps with release. Lengthening the slave cylinder pin is not recommended, because it can bend the release fork crooked.