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: Testing and Inspection

Fuel Pressure Gauge:





1. Release fuel pressure.
2. Connect pressure gauge between filter and hose; check pressure at idle. Gauge should read 26 - 30 psi (177 - 206 kPa).