Summit L4-1597cc 1.6L DOHC (1990)
Fuel Injector: Service and Repair
REMOVAL
NOTE: The injectors and the fuel rail are removed together as an assembly.
Fuel Rail, Injectors, Fuel Pressure Regulator And Components
1.
Reduce the internal pressure of the fuel lines and hoses by completing the following operations:
a.
Disconnect the fuel pump harness connector at the rear of the fuel tank.
b.
Start and run the engine until it stalls, then turn the ignition switch to OFF.
c.
Disconnect the battery negative terminal.
d.
Connect the fuel pump harness connector.
2.
Disconnect the high pressure fuel line form the fuel rail.
CAUTION: Cover with a shop towel to avoid gasoline spillage from any residual fuel in the fuel rail or line.
3.
Disconnect the fuel return line from the fuel regulator.
4.
Remove the fuel rail mounting bolts.
5.
Remove the fuel rail with the injectors and regulator in position. Being careful not to drop any of the injectors while removing the rail.
6.
Remove the injectors from the fuel rail.
NOTE: Fuel may spill out of the fuel rail when the injectors are removed.
INSPECTION
Injector Resistance Test
Measure the resistance of the injector coils using an ohmmeter.
Resistance: 13-16 ohm @ 68°F (20°C)
