Fuel Pressure Basic Inspection

WARNING: This page is about a different variant/trim than selected.

WARNING: When performing the following procedure, be sure to observe PRECAUTIONS ON FUEL SYSTEM SERVICE in order to reduce the risk of fire and personal injury.

Relieve fuel pressure in fuel feed line, see FUEL PRESSURE RELIEF PROCEDURE .
Disconnect fuel feed hose from fuel feed pipe.
Connect special tools and hose between fuel feed hose (1) and fuel feed pipe as shown in figure.
NOTE: When checking fuel pressure, connect special tool firmly with fuel feed line to prevent fuel leakage as it receives high fuel pressure.

Special Tool

(A): 09912-58442

(B): 09912-58432

(C): 09912-58490

Fig 1: Connecting Special Tools Between Fuel Feed Hose And Fuel Feed Pipe
Courtesy of SUZUKI OF AMERICA CORP.
Check that battery voltage is 11 V or more.
Measure fuel pressure as follows.
If measured pressure is out of specification, proceed to the following check.
- Leakage and clogging of fuel pipe
- Check fuel pump circuit, see FUEL PUMP AND ITS CIRCUIT CHECK .
1. Turn ignition switch to ON position to operate fuel pump for 2 seconds and then turn it off. Repeat this 3 or 4 times and then check fuel pressure.
  Fuel pressure specification
  
  With fuel pump operating and engine stopped: 375 - 385 kPa (3.8 - 3.9 kgf/cm ² , 54.3 - 55.8 psi)
After checking fuel pressure, remove fuel pressure gauge.
WARNING:
- After checking fuel pressure as fuel feed line is still under high fuel pressure, make sure to release fuel pressure according to the following procedures.
- Place fuel container under joint.
- Cover joint with rag (1) and loosen joint nut slowly in order to release fuel pressure gradually.
Fig 2: Removing Special Tools From Fuel Feed Pipe And Fuel Feed Hose
Courtesy of SUZUKI OF AMERICA CORP.
Remove special tools from fuel feed pipe and fuel feed hose.
Connect fuel feed hose to fuel feed pipe and clamp it securely.
Check fuel leaks, see FUEL PUMP AND ITS CIRCUIT CHECK .