Concord L6-258 4.2L VIN C 2-bbl (1982)
Positive Crankcase Ventilation Valve: Testing and Inspection
PCV Valve Test
Fig 45 PCV Valve Test
Fig 46 PCV Flow Rate Chart
PCV valve tester J-23111, Fig. 45, can be used to test valve and system for proper operation. To use tester, proceed as follows:
1. Remove PCV valve from its mounting grommet.
2. Connect vacuum gauge to read intake manifold vacuum.
NOTE: The PCV valve must be in a horizontal position and lightly tapped during testing.
3. Start engine and allow to idle. Compare vacuum and tester readings to flow chart, Fig. 46, and record readings.
4. Stop engine, then disconnect coil secondary wire from distributor cap and ground it to engine.
5. Crank engine while comparing vacuum and tester readings with chart, Fig. 46.
NOTE: Throttle must be at curb idle position during cranking speed test.
6. If valve flow is above or below the chart specifications, clean or replace valve.