Ever had to reach a wire, or a dropped piece of hardware that was impossible to grab even with mechanical fingers, here’s an easy and very cheap tool you can make that will allow you to complete what you thought would be an impossible job.
While flying along some stormy night in your small four cylinder airplane, nothing will get your heart rate to speed up more than a sticking valve that will cause you to lose 25% of your power. (Been there, done that!!)
Short of pulling the faulty cylinder off the engine once you’re back safe and sound on the ground, the usual and least expensive way to fix the valve, (usually the exhaust from lead deposits on the stem and guide) is to drop the valve into the cylinder.
Then you will hone out the valve guide, and polish the valve stem with very fine emery