Operation CHARM: Car repair manuals for everyone.
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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Air Induction System Precautions

AIR INDUCTION SYSTEM
1. Separation of the engine oil level gauge, oil filler cap, Positive Crankcase Ventilation (PCV) hose, etc. may cause the engine to run out of tune.
2. Disconnection, looseness or cracks in the parts of the induction system between the throttle body and cylinder head will allow air suction and cause the engine to run out of tune.