REMOVAL & INSTALLATION
See Figures 1, 2, 3, 4, 5 and 6
The PCV valve regulates crankcase ventilation during various engine operating conditions. At high vacuum (idle speed and partial load range) it will open slightly and at low vacuum (full throttle) it will open fully. This causes vapor to be removed from the crankcase by the engine vacuum and then sucked into the combustion chamber where it is dissipated.
- Check the ventilation hoses for leaks or clogging. Clean or replace as necessary.
- Locate the PCV valve in the cylinder head cover. Remove it.
- Blow into the crankcase end of the valve. There should be free passage of air through the valve.
- Blow into the intake manifold end of the valve. There should be little or no passage of air through the valve.
- If the PCV valve failed either of the preceding two checks, it will require replacement.
- Inspect the PCV grommet. Replace if necessary.
- Insert the PCV valve into the grommet.
- Place the ventilation hose on the end of the valve.