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)

Or, hide this message: temporarily or permanently

CO Concentration Is Too Low

1. Visually check air hoses, fuel hoses and connections.
2. Check fuel pressure and auxiliary air device.
3. Check temperature sensor and air flow sensor.
4. Check injectors and injector resistors.
5. Check air induction system.