Manuals through 2025 now available!

Our trusted friends have launched a new website named LEMON, which has newer manuals. It also contains all the CHARM manuals.

LEMON is the spiritual successor to CHARM, I recommend you try it!

Link: lemon-manuals.la or lemon-manuals.org.ua

(Some people have issue connecting. LEMON is investigating. For now, use Firefox or change your DNS server)

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Positive Crankcase Ventilation: Testing and Inspection

CRANKCASE VENTILATION SYSTEM CHECK
1. Remove the rocker cover side of the positive crankcase ventilation (PCV) valve hose.
2. Start the engine and run at idle.

3. Place a finger at the opening of the PCV valve and confirm that vacuum of the intake manifold is felt.

NOTE: At this time, the plunger in the PCV valve moves forward and backward.

4. If vacuum is not felt, replace the PCV valve.