See Figures 1, 2, 3 and 4
A positive crankcase ventilation (PCV) system is used to prevent pollutants (blow-by gasses) from being released into the atmosphere. The PCV system supplies fresh air to the crankcase through the air cleaner. The fresh air mixes with the gases and is passed through the PCV valve to the intake manifold. the gasses are then reburned in the combustion process. The PCV system should be inspected every 52,000 miles (84,000 km).
- Remove the PCV valve.
- Shake the valve. If a rattle is heard, the valve is operational.
- If a rattle is not heard, insert a thin stick into the PCV valve from the threaded end and push to check if the plunger moves.
- If the plunger does not move, the valve is clogged and should be cleaned or replaced.
- Install the hose on the valve and start the engine.
- Place a finger over the threaded end of the valve and check for vacuum. If vacuum is not present, check the hose for obstructions and replace as necessary.
- Install the PCV valve.
REMOVAL & INSTALLATION
- Disconnect the ventilation hose from the PCV valve.
- Remove the valve from the rocker cover.
- Thread the new valve into the rocker cover and tighten to 6-9 ft. lbs. (8-12 Nm).
- Connect the ventilation hose to the valve.