Fuel Pressure Test
- Start engine. Warm to normal operating temperature. Turn ignition off. Release fuel system pressure. See FUEL SYSTEM PRESSURE RELEASE
. Remove plug bolt on fuel rail. Install coupling, pressure gauge and hose to fuel rail. See Fig 1
. Verify battery voltage is 11 volts or greater. Start engine and ensure no leakage exists at pressure gauge connection. Turn engine off.
- Turn ignition on to operate fuel pump for 3 seconds. Turn ignition off. Repeat 3-4 times and check fuel pressure. Refer to the specifications in the appropriate FUEL PUMP PERFORMANCE
table and/or the REGULATED FUEL PRESSURE
table. Start engine. Measure fuel pressure at idle. Turn ignition off.
- If pressures are not within specification, check for defective fuel pump, pressure regulator or restriction in fuel system. See CIRCUIT TESTS
. Repair as necessary. Remove fuel pressure gauge and start engine to ensure no fuel leakage exists.
Courtesy of SUZUKI OF AMERICA CORP. FUEL PUMP PERFORMANCE
| Application |
psi (kg/cm2
) |
| Sidekick 1.8L |
38.4-44.0 (2.7-3.1) |
REGULATED FUEL PRESSURE
| Application |
psi (kg/cm2
) |
| Sidekick 1.8L |
31.0-37.0 (2.2-2.6) |