H2 V8-6.2L (2008)
3. Loosen the spark plug 1 or 2 turns.
4. Brush or air blast away any dirt or debris from around the spark plug.
5. Remove the spark plug.
6. Install J 22794 into the spark plug hole.
7. Attach an air hose to J 22794 .
8. Apply compressed air to J 22794 in order to hold the valves in place.
9. Use J 38606 in order to compress the valve spring.