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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Fuel Pressure: Specifications


Engine Vacuum At Idle 20 in.Hg (69 kPa)

Fuel Pump
Test pressure 2.76 - 3.63 psi (19 - 25 kPa)
Test volume 0.85 U.S. gal./min. (0.6 lit./min.)

Vacuum Switch
Above 5.8 psi (40 kPa) No continuity
Below 3.9 psi (26 kPa) Continuity