Fuel Pressure Release: Service and Repair

WARNING: Fuel vapor is hazardous. It can very easily ignite, causing serious injury and damage. Always keep sparks and flames away from fuel.

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

WARNING: Fuel line spills and leaks are dangerous. Fuel can ignite and cause serious injuries or death and damage. Fuel can also irritate skin and eyes. To prevent this, always complete the following "Fuel Line Safety Procedures".

FUEL LINE SAFETY PROCEDURES
A. Release the fuel pressure before disconnecting a fuel line.
1. Start the engine.
2. Disconnect the fuel pump relay connector.
3. After the engine stalls, turn the ignition switch to OFF.
4. Reconnect the fuel pump relay connector.
B. Avoid leakage.
1. When disconnecting a fuel line hose, wrap a rag around it to protect against fuel leakage.
2. Plug the hose after removal.
C. Install hose clamps to secure the fuel pressure gauge connections.

PRIMING FUEL SYSTEM
After the fuel pressure has been released for repairs or inspection, the system must be primed to avoid excessive cranking when the engine is first started. Follow the steps below.
1. Connect the data link connector terminals F/P and GND with a jumper wire.
2. Turn the ignition switch ON for approximately 10 Sec. and check for fuel leaks.
3. Turn the ignition switch OFF and remove the jumper wire.