GM Cavalier/Sunbird/Skyhawk/Firenza 1982-1994

PCV Valve

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See Figures 1 and 2



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Fig. Fig. 1: Positive Crankcase Ventilation air flow schematic



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Fig. Fig. 2: Cross-section of a PCV valve

REMOVAL & INSTALLATION



See Figures 3, 4 and 5

PCV Valve

The valve is located in a rubber grommet in the valve cover, connected to the air cleaner housing by a large diameter rubber hose. To replace the valve:

  1. Pull the valve (with the hose attached) or the hose from the rubber grommet in the valve cover.
  2.  



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Fig. Fig. 3: Pull the hose from the nipple in the valve or camshaft cover



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Fig. Fig. 4: Remove the extension from the hose, to access the valve, then ...

  1. Remove the valve from the hose.
  2.  



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Fig. Fig. 5: ... remove the PCV valve from the hose

  1. Install a new valve into the hose.
  2.  
  3. Press the valve or hose back into the rubber grommet in the valve cover.
  4.  

PCV Filter

Some models have a PCV filter, located in the air cleaner housing. This filter must be replaced at every 50,000 miles (80,500 km), or sooner, upon inspection.

  1. Remove the air cleaner housing lid.
  2.  
  3. Slide back the filter retaining clip and remove the old filter.
  4.  
  5. Install the new filter, replace the retaining clip and replace the housing lid.
  6.  

 
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