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

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Fuel Pressure: Service Precautions

WARNING: Fuel in the fuel system remains under high pressure when the engine is not running.

WARNING: Use a rag for protection from fuel spray when disconnecting the hoses.

SST Fuel Gauge With Pressure Release Hose:




Fuel Pressure and Servicing Fuel System Releasing
Before disconnecting any fuel line release the fuel pressure from the fuel system to reduce the possibility of injury or fire.

- Connect the SST to the fuel pressure relief valve (Schrader valve) located on the fuel distribution pipe.
- Place the SST drain hose in a suitable container.
- Depress the pressure relief button until the pressure is released.

Alternate method
- Disconnect the inertia fuel shutoff switch.
- Crank the engine for 15 to 20 sec. to relieve the pressure.

NOTE: When inspecting the fuel system, use the SST.