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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Clear Flood Mode (Port and TBI Injection)


A flooded engine is cleared by fully depressing the accelerator pedal, which causes the ECM to pulse the injectors at a air/fuel ratio of 20:1. The ECM will maintain this air/fuel ratio as long as the throttle is wide open and engine RPM is less than 600. If throttle position becomes less than 80% of wide open throttle, the ECM returns to ``Starting Mode.''