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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Fuel Pressure Regulator

Without vacuum applied to the regulator, the fuel system operates at 331 kPa (48 PSI).

With the engine idling and manifold vacuum applied to the regulator, the system operates at approximately 269 kPa (39 PSI).

NOTE: Fuel system pressure varies with different amounts of manifold vacuum applied to the regulator.