FUEL PRESSURE INSPECTION
CAUTION:
•Safely and securely remove and install fuel hose.
•Use the fuel pressure gauge for fuel pressure inspection.
•Do not inspect fuel pressure while other systems are
operating. Malfunctions may occur in fuel pressure value.
1.Release the fuel pressure.
2.Install fuel pressure gauge using fuel hose for fuel pressure inspection.
3.Remove fuel hose, and then install fuel hose for fuel pressure inspection.
CAUTION:
Usable period of fuel hose for fuel pressure inspection is 30 times or less. (Fuel hoses that are damaged and allow fuel leakage are not contained above.
4.Turn ignition switch ON, and then make sure that there is no fuel leakage.
5.Start engine, and check for fuel leakage.
6.Make sure that fuel pressure is within the standard.
At idle: 353 kPa (3.6 kg/cm2) [51 psi]
•If the vehicle shows poor starting, check fuel pressure with fuel pump operating for approximately 1 second after ignition switch is turned ON, and during cranking.
For 1 second after ignition switch is turned ON and during cranking: 353 kPa (3.6 kg/cm2) [51 psi]
•Check the following items if a malfunction is detected.
CAUTION:
Also check fuel pressure at increased engine speed.
•Malfunctioning pressure regulator (integrated with fuel pump)
•Clogged fuel piping
•Clogged fuel filter (with fuel pump)
•Poor fuel pump discharge
Fuel Pressure Release
CAUTION:
Relieve fuel pressure before removing fuel piping to secure safety.
With Active Test
1.Perform “Fuel pressure clear” of ECM Active Test.
2.Crank engine 2 or 3 times to consume the fuel in the fuel line
after it stalls.
3.Turn ignition switch OFF.
Without Active Test
1.Disconnect fuel pump fuse.
2.Start engine.
3.Crank engine 2 or 3 times to consume the fuel in the fuel line
after it stalls.
4.Turn OFF the ignition switch, and install the fuel pump fuse.