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 Injection Check Valve: Service and Repair

Removing:
- Ensure that ignition is switched OFF.
- Disconnect battery ground cable.

CAUTION: Obtain radio anti-theft code before disconnecting the battery ground cable.
- Remove sound dampening tray.




Remove pressure hose -5- between combi-valve -1- and Secondary Air Injection pump -4-.
- Disconnect vacuum hose -2- from combi-valve.
- Unscrew combi-valve -1- from connection -3- and pull out.

Installing:
- Install in reverse order of removal procedure.