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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PCV Valve Quick Check

1. Replace existing PCV valve with a known good one.
2. Start engine and compare existing engine idle quality with prior idle quality.
3. If loping or rough idle condition remains when the PCV valve is replaced, the PCV system is not at fault. Further engine component diagnosis must be made to determine cause of malfunction.
4. If idle quality improves, replace PCV valve and clean hoses and fittings.