Movement of the master cylinder will also cause release problems. This is especially noticeable when the master cylinder is mounted to the firewall, and the firewall metal is not rigid enough to hold it in place during actuation. Any movement of the master cylinder reduces the force applied to the hydraulic piston inside, causing incomplete release.

Causes of Release Problems

External
	Contaminated hydraulic fluid
	Incorrect release system adjustment
	Air in the hydraulic release system
	Defective or worn release system components
	Defective or worn pedal bushings or brackets
	Flexing of the firewall or any release component attachment point