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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Ignition System: Description and Operation
Fig. 39 Ignition timing control system.:
This system,
Fig. 39, provides vacuum advance in response to manifold vacuum to optimize
ignition timing during and after engine warm-up to control emission levels while maximizing fuel economy and engine performance.