If the cylinder heads are on the engine, you will need to add air pressure to the cylinder to hold the valves in place. Our example is the Craftsman 47089 compression test kit using the 14mm long ...
AIGO-TEC is one of those brands that’s been around for ages, but you’ve probably never heard of them. The German company traces its lineage back to Margarete Steiff, and the invention of plush toys ...
Roughly 130 years ago, New Yorker August Schrader and his able son, George, applied to the U.S. Patent and Trademark Office to protect the ownership of their new invention. It was a valve. "This ...