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

Emission Control Systems






CO% AT IDLE [1] 0.1% maximum

IDLE SPEED 700 ± 50 (in "park or neutral")

IGNITION TIMING [2] 15 ± 2~ BTDC @ 750 ± 50 RPM



[1] Check only not adjustable.
[2] With jumper wire installed in service connector.