Exam 52: Engine Diagnosis and Service: Cylinder Head and Valvetrain

Even the smallest hint of rust on a valve spring will require its replacement.

If the head is installed on the engine and you want to rotate the camshaft to a different position during belt installation, you should move the pistons partway down in their bores (about ____ degrees) in order for the valves to clear the pistons.

Cracks in iron heads are commonly repaired with tapered, threaded plugs. This process is known in the industry as ____________________ a crack.

Which of the following statements is LEAST-Likely true?

When the seat and valve are reground, the stem moves further into the cylinder head. This results in increased valve stem tip height and ____________________ installed height.