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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System Perfomance Check

Fig. E-4:






SYSTEM PERFORMANCE CHECK
The System Performance Check (Fig. E-4) is used to check the operation of the M/C solenoid and the main metering circuit using tachometer, and to check the operation of the Closed Loop Emission Control System by the use of a dwell meter.