GM Corvette 1984-1996 Repair Guide

PCV Valve

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REMOVAL & INSTALLATION



Except 5.7L (VIN J) Engines

See Figures 1, 2, 3, 4 and 5

  1. Disconnect the negative battery cable.
  2.  



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Fig. Fig. 1: Typical Positive Crankcase Ventilation (PCV) system flow-except 5.7L (VIN J) engine



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Fig. Fig. 2: Cross-sectional view of a PCV valve

  1. Unfasten the hose clamps, if necessary, then disconnect the hoses from the PCV valve.
  2.  
  3. Remove the PCV valve from the grommet in the valve cover.
  4.  



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Fig. Fig. 3: Sometimes, its easier to pull the PCV valve out of the grommet in the rocker arm cover first



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Fig. Fig. 4: ... then pull the valve from the hose ...



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Fig. Fig. 5: ... and remove it from the vehicle

To install:
  1. Insert the PCV valve into the grommet in the valve cover.
  2.  
  3. Connect the hoses to the PCV valve, then install the hose clamps, if equipped.
  4.  
  5. Connect the negative battery cable.
  6.  

5.7L (VIN J) Engine

See Figures 6 and 7

This engine is equipped with dual PCV valves.

  1. Disconnect the negative battery cable.
  2.  
  3. Unplug the PCV molded vacuum hose.
  4.  

Make sure to note the position of the PCV valves, because they are not interchangeable.

  1. Remove the PCV valve(s).
  2.  



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Fig. Fig. 6: Schematic of the PCV air flow and valve location-5.7L (VIN J) engine



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Fig. Fig. 7: On 1991-96 vehicles, the canister is located underneath the vehicle, behind the passengers rear wheel

To install:
  1. Place the PCV valve(s) into the proper location.
  2.  
  3. Attach the molded vacuum hose to the valve(s).
  4.  
  5. Connect the negative battery cable.
  6.  

 
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