Method B

CAUTION:

Be careful not to scratch or get the fuel hose connection area dirty when servicing, so that the quick connector o-ring maintains seal ability.
Use Fuel Pressure Gauge Kit [SST (J-44321)] and Fuel Pressure Gauge Adapter [SST (J-44321-6)] to check fuel pressure.

Release fuel pressure to zero. Refer to "FUEL PRESSURE RELEASE ".
Remove fuel hose using Quick Connector Release [SST (J-45488)]. Refer to [FUEL INJECTOR AND FUEL TUBE: REMOVAL AND INSTALLATION [QR25DE] ].
- Never twist or kink fuel hose because it is plastic hose.
- Never remove fuel hose from quick connector.
- Keep fuel hose connections clean.
Install Fuel Pressure Gauge Adapter [SST (J-44321-6)] and Fuel Pressure Gauge kit [SST (J-44321)] as shown in the figure.

Fig 1: Installing Fuel Pressure Gauge Adapter And Fuel Pressure Gauge Kit
Courtesy of SUZUKI OF AMERICA CORP.
- Never distort or bend fuel rail tube when installing fuel pressure gauge adapter.
- When reconnecting fuel hose, check the original fuel hose for damage and abnormality.
Turn ignition switch ON (reactivate fuel pump), and check for fuel leakage.
Start engine and check for fuel leakage.
Read the indication of fuel pressure gauge kit [SST (J-44321)].
- During fuel pressure check, check for fuel leakage from fuel connection every 3 minutes.
  At idling: Approximately 350 kPa (3.57 kg/cm ² , 51 psi)
If result is unsatisfactory, go to next step.
Check the following.
- Fuel hoses and fuel tubes for clogging
- Fuel filter for clogging
- Fuel pump
- Fuel pressure regulator for clogging
  If OK, replace fuel level sensor unit, fuel filter and fuel pump assembly.
  
  If NG, repair or replace.
Before disconnecting Fuel Pressure Gauge kit [SST (J-44321)] and Fuel Pressure Adapter [SST (J-44321-6)], release fuel pressure to zero. Refer to "FUEL PRESSURE RELEASE ".