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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Intake Manifold Change-Over, Checking



Intake Manifold Change-over, Checking

Testing should only be performed if the engine is losing power.

The intake manifold change over function switches over from the long intake tract to the short intake tract at about 4200 rpm.