Valve Spring: Service and Repair

Valve Springs





Special Tool(s)





Material

Removal
1. Disconnect the battery ground cable.





2. CAUTION: Do not pull on the cable when removing the spark plug connector. If necessary remove the ignition coil plug to avoid bending the cable. Turn the spark plug connector slightly before removing to loosen the gasket.

CAUTION: Pull off the spark plug connector in a straight movement.

Disconnect the ignition wires from the spark plugs.
^ Remove the two ignition wire separators from the valve cover.





3. NOTE: If an original spark plug is reused, install it in the same cylinder from which it was removed. New spark plugs may be installed in any cylinder.

Remove the spark plugs.





4. Remove the valve cover.





5. Remove the rocker arms.





6. NOTE: Bring the affected piston to top dead center (TDC) to prevent the valves from falling into the cylinder if air pressure is interrupted.

Install an adaptor and apply 965 kPa of air pressure to hold the valve shut.





7. NOTE: Keep the components in order for reassembly.

Using the special tool to compress the valve spring and remove the valve spring retainer key and the valve spring.

Installation





1. Use the special tool to compress the valve spring and install the valve spring retainer.





2. NOTE: Check that the rocker guides are sitting correctly.

Install the rocker arms.





3. Remove the adaptor.





4. Install the valve cover.





5. Install the spark plugs (shown with engine removed).
^ Apply lubricant to the spark plug thread.





6. CAUTION: Use a blunt object (plastic cable tie) to apply the silicone grease, to avoid damaging the spark plug connector seal.

CAUTION: Push on the spark plug connector in a straight movement.

NOTE: Coat the inside of the spark plug connector with silicone grease to a depth of 5-10 mm.

Push on the spark plug connector until it engages.
7. Connect the battery ground cable.