1500 4x2 Pickup V8-5.2L CNG VIN T (1996)
Fig. 15 Shake PCV Valve - Typical
4. Turn engine off and remove PCV valve from cylinder head (valve) cover. The valve should rattle when shaken.
5. Replace the PCV valve and retest the system if it does not operate as described in the preceding tests. Do not attempt to clean the old PCV valve.
6. If the paper is not held against the opening in cylinder head (valve) cover after new valve is installed, the PCV valve hose may be restricted and
must be replaced. The passage in the intake manifold must also be checked and cleaned.
7. To clean the intake manifold fitting, turn a 1/4 inch drill (by hand) through the fitting to dislodge any solid particles. Blow out the fitting with shop
air. If necessary, use a smaller drill to avoid removing any metal from the fitting.
