Fittings such as these, for connecting a compressed air line to the spark plug hole for valve support, are available at most auto parts stores. Occasionally it is necessary or desirable to inspect or ...

A new tool developed by a professional trucker makes it easier to remove valve cap stems, including the difficult-to-reach stems on inner duals, and also can remove and reinstall valve cores from the ...

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 ...