Home Tips & Tricks 2005 Mazda 3 L4-2.3l Fuel Pressure Testing And Inspection

2005 Mazda 3 L4-2.3l Fuel Pressure Testing And Inspection


Download FUEL LINE PRESSURE INSPECTION WARNING: Fuel line spills and leakage from the pressurized fuel system are dangerous. Fuel can ignite and cause serious injury or death and damage. To prevent this, complete the following inspection with the engine stopped. 1. Follow “BEFORE SERVICE PRECAUTION” before performing any work operations to prevent fuel from spilling from the fuel system. (See BEFORE SERVICE PRECAUTION.) 2. Disconnect the negative battery cable. 3. Disconnect the quick release connector (in the engine compartment). (See QUICK RELEASE CONNECTOR (FUEL SYSTEM) REMOVAL/INSTALLATION.) 4. Turn the lever of the SST parallel to the hose as shown in the figure. 5. Insert the SST quick release connector into the fuel pipe until a click is heard. 6. Verify that the quick release connector is firmly connected by pulling it by hand. 7. Start the fuel pump using the following procedure: Using WDS or equivalent 1. Connect the WDS or equivalent to the DLC-2. 2. Start the fuel pump using the “FP” simulation function. Not using WDS or equivalent 1. Remove the fuel pump relay. CAUTION: Be careful to short the specified terminal as shorting the wrong terminal of the mainfuse block may cause a malfunction. 2. Using a jumper wire, short fuel pump relay terminals C and D and connect the negative battery cable to start the fuel pump.