Generally, they can occur from one of the following causes: 1  Infection. 2  Environmental exposure. 3  Malignancy. 4  Occupational exposure. 5  Collagen vascular disease (an inflammatory condition of the body including the lung) 6  Drugs. 7  Idiopathic (unknown causes)
01-08-2006, 09:34 AM. Check to see if you have the tap marker (handle) turned down to far. The jam nut (lever collar) for holding the marker straight should not be touching the lever bonnet. The bonnet is the nut that holds everything to the faucet. If it is touching, this will cause your sticking Faucet.
Caliper Piston. Sometimes brake caliper sticking is caused by the piston. As you can see in the image above, the piston has a rubber boot around it. This rubber boot protects, seals and lubricates the piston.voiding a Stuck Brake Caliper. The best way to avoid brake caliper sticking problems is to take care of your brakes. If you replace brake pads and top up brake fluid when needed, then you shouldn't run into any problems with your brake caliper.