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

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Computers and Control Systems


Air/Fuel Ratio [1]
CO content 0.6%
CO limits 0.2 - 1.0%

Idle RPM
Engine hot 750 +/- 20

Knock Sensor
Tightening torque 14 ft. lb. (20 Nm)

Oxygen Sensor
Tightening Torque 40 ft. lb. (55 Nm)

Timing [2]
At idle 16° BTDC

[1] Check upstream of catalytic converter.
[2] Timing spec is check only, no adjustments are possible.