Chevrolet Chevette/1000 1976-1988 Repair Guide

Positive Crankcase Ventilation Valve

Print

REMOVAL & INSTALLATION



Gasoline Engines


Click image to see an enlarged view

Fig. Fig. 1Positive Crankcase Ventilation system on a gasoline engine



Click image to see an enlarged view

Fig. Fig. 2Pull the PCV valve from its grommet in the valve cover

PCV valve replacement is recommended at 30,000 miles or 2 year intervals. A clogged PCV system will cause poor idle and rough running. To replace the valve:

  1. Pull the PCV valve from the valve cover, under the air cleaner.
  2.  
  3. Using a pair of pliers, release the valve retaining clip and remove the valve.
  4.  

To install:

  1. Install the new valve and insert it into the valve cover.
  2.  
  3. Inspect all PCV connecting hoses. Replace any cracked or deteriorated hoses.
  4.  

Diesel Engines


Click image to see an enlarged view

Fig. Fig. 3Diesel engine Positive Crankcase Ventilation (PCV) system components

Periodically check