Positive Crankcase Ventilation Valve: Service and Repair

Notice: Use of the correct PCV valve for the engine and equipment type is very important. Wrong or substandard parts may result in any of the problems just listed as well as powertrain component damage.


An engine which is operated without an effective crankcase ventilation system can suffer damage. Therefore, it is important to replace the Positive Crankcase Ventilation ([1][2]PCV) valve at proper intervals.


Periodically inspect the hoses and clamps for signs of deterioration. Replace when necessary.


REMOVAL PROCEDURE
1. Disconnect the negative (-) battery cable.
2. Remove the three bolts.
3. Remove the throttle cover.
4. Remove the clamp from the PCV valve.
5. Disconnect the [1][2]PCV hose from the PCV valve.
6. Remove the rubber insulator from the PCV valve.
7. Remove the PCV valve from the intake manifold.


INSTALLATION PROCEDURE
1. Install the PCV valve in the intake manifold.
2. Install the rubber insulator over the PCV valve.
3. Connect the [1][2]PCV hose to the PCV valve.
4. Secure the [1][2]PCV hose to the PCV valve with the clamp.
5. Install the throttle cover.
6. Secure the throttle cover with three bolts. Tighten the throttle cover bolts to 15 Nm (11 lb. ft.).
7. Connect the negative (-) battery cable. Tighten the negative (-) battery cable-to-negative (-) battery terminal retainer to 15 Nm (11 lb. ft.).