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 ...

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 ...

This situation recently occurred when we purchased a set of valve locks from a local engine shop. While assembling the valvesprings and retainers, we noticed that one of the locks was not the same as ...