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

AIR System:






Remove or Disconnect

1. Check valve clamp
2. Hose from check valve
3. Left check valve pipe
4. Unscrew check valve from air injection pipe

Install or Connect

1. Screw check valve onto air injection pipe

Torque Value: 19 Nm (14 lb ft)

2. Air pipe to exhaust manifold
3. Air hose to check valve
4. Check valve clamp