Fixing stuck valves

Valves can be stuck due to rust, burnt oil from overheating or being slightly bent due to incorrect timing. This trick can fix them but at risk of lower valve compression or slightly more oil getting into combustion. Useful for old bikes of which new valve guides or valves cannot be found. Valve guide reams can be used but are often expensive for one off jobs.

Use masking tape to stick the valve to the end of a power drill. Drill until loose.