What are the initial steps to perform a Cylinder Leakage Test?

The initial steps to perform a Cylinder Leakage Test require specific actions to ensure accurate results, and the correct answer involves the removal of the spark plug and positioning the piston at top dead center. This step is vital because it allows for the establishment of a baseline where the cylinder's condition can be assessed without interference from other engine processes.

When the spark plug is removed, it enables the technician to introduce pressurized air into the cylinder. Bringing the piston to top dead center ensures that both the intake and exhaust valves are closed, which is crucial for a proper test. If the piston is not at top dead center, air could escape through open valves, leading to misleading results about the integrity of the cylinder.

The other options focus on actions that, while relevant in some contexts, do not directly pertain to setting up for the Cylinder Leakage Test itself. For example, running the engine to operating temperature may be a good preparatory step for various diagnostics but isn't necessary for the cylinder leakage procedure. Draining the fuel tank and inspecting coolant levels may be good practices for general maintenance or safety, but they do not influence the specific mechanics of performing a cylinder leakage test.