Fuel System Pressure Relief Procedure

WARNING: Gasoline or gasoline vapors are highly flammable. A fire could occur if an ignition source is present Never drain or store gasoline or diesel fuel in an open container; due to the possibility of fire or explosion. Have a dry chemical (Class B) fire extinguisher nearby.

1. Disconnect the negative battery terminal to avoid possible fuel discharge if an accidental attempt is made to start the engine.
2. Loosen the fuel filler cap to relieve tank vapor pressure.
3. Remove the fuel injector sight shield. Refer to Engine Cover Replacement Service and Repair.
4. Remove the fuel pressure connection.
5. Wrap a shop towel around the fuel pressure connection while connecting the fuel pressure gauge in order to avoid spillage.
6. Connect Fuel Pressure Gauge J 34730-1A or equivalent to the fuel pressure connection.
7. Install the bleed hose into an approved container and open the valve to bleed the system pressure. The fuel connections are now safe for servicing.
8. Drain any fuel remaining in the fuel pressure gauge into an approved container.