Procedure C: Perform Crank Case Pressure Test

PROCEDURE C: PERFORM CRANK CASE PRESSURE TEST





1. Remove the plastic engine cover.

2. For indoor shops; place the shop exhaust vent hose over the tailpipe.

3. Connect CONSULT-II to the vehicle.

4. Start the engine - CONSULT-II will turn on automatically.

5. Select [ENGINE] - wait for System Call to run.

6. Select [ENGINE] > [DATA MONITOR] > [SELECTION FROM MENU] > [COOLANT] >
[TEMP/S.] Set reading to Numerical Display.

7. Let the engine idle until the engine coolant temperature reaches 192°F (88°C) or greater.

IMPORTANT:
Keep engine at Idle Speed Only during engine warm up.

8. Turn the engine OFF.

^ Leave CONSULT-II connected to the vehicle.





9. Remove clamp and disconnect the valve cover PCV breather hose.

CAUTION:
Hold the air duct elbow as shown in this picture to prevent breaking it.





10. Disconnect the PCV hose at the intake manifold.

11.Cap the ports, plug and clamp the hose as shown in Figure C3.

DO NOT PLUG the valve cover PCV breather hose yet.

IMPORTANT:
You MUST use the caps and plugs from the Special Tool Kit. Make sure the Caps and Plugs are fully installed/seated. DO NOT use "pinch-off" pliers, they will not seal well enough.

12. Remove the engine oil dipstick and put it in a clean place.





13. Set the PV350 to (as shown in the illustration above).

14. Install the PV350 into the Fluke meter (COM & Volt/Ohm holes).





15. Set the Fluke meter dial to mV (Millivolts).

16. Zero the meter using the Zero Adjust on the PV350 module.





17. Install the sensing end of the PV350 onto the oil dipstick tube and tighten the clamps.

IMPORTANT:
Make sure the rubber tube is securely clamped at each end.

18. Make sure the oil fill cap is tight.

19. Perform the pressure test EXACTLY as follows:

NOTE:
You must do these steps exactly to get accurate test results.

A. Turn OFF and Leave OFF all electrical loads (A/C, headlights, audio, etc.).

B. Start the engine. Let the engine idle until the engine coolant temperature reaches 192°F (88°C) or greater.

^ CONSULT-II should still be connected to the vehicle. Use it to read the engine temperature.

NOTE:
It is recommend that you review steps C, D and E before continuing.





C. Plug the valve cover PCV breather hose.

^ Make sure the plug is completely installed/seated.





D. Immediately after plugging the PCV breather hose, begin the 90 second time:

NOTE:
Keep the engine at idle during this 90 second test.

E. At 90 seconds, read the pressure reading.

^ Write the preassure reading on the repair order.

20. Turn OFF the engine.

21. Important: Vent the crankcase by removing the plug from the valve cover PCV breather hose first.

22. Remove remaining plugs / caps, reinstall and clamp hoses in their original positions.





23. See Test Results Flow Chart above.