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)

Or, hide this message: temporarily or permanently

Functional Check

If engine is idling rough, check for a clogged PCV system. Check for leaks in the PCV system. Replace as required.

Use the following procedures to determine if the PCV system is functioning properly:
1. Remove PCV hose from cam vent housing.
2. Run engine at idle.
3. Place your thumb over ind of vent housing hose to check for strong vacuum signal. If vacuum is not present, check for a plugged intake manifold port. Replace any clogged components or clean out plugged port.