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ENGINE MANAGEMENT SYSTEM - V8 DESCRIPTION AND OPERATION 18-2-33 Fuel injectors The fuel injectors are located beneath the air inlet manifold. They utilise an electrical solenoid to lift the injector needle There are eight fuel injectors one per cylinder that the ECM operates sequentially. All the injectors are fed from a 2 ) by a regulator that is integral with the fuel pump. FUEL DELIVERY SYSTEM - V8, DESCRIPTION AND OPERATION, Description. Input/Output Typical hot engine injector pulse width values: l Idle = 2.5 ms. l Peak torque (3000 rev/min) = 7 ms The ECM controls injector earth as follows: l Cylinder No 1 - pin 41 of connector C0636 of the ECM multiplug. l Cylinder No 2 - pin 1 of connector C0636 of the ECM multiplug. l Cylinder No 3 - pin 27 of connector C0636 of the ECM multiplug. l Cylinder No 4 - pin 40 of connector C0636 of the ECM multiplug. l Cylinder No 5 - pin 2 of connector C0636 of the ECM multiplug. l Cylinder No 6 - pin 15 of connector C0636 of the ECM multiplug. l Cylinder No 7 - pin 14 of connector C0636 of the ECM multiplug. l Cylinder No 8 - pin 28 of connector C0636 of the ECM multiplug. Individual injectors can be measured for resistance using a multimeter. An acceptable injector resistance is as follows: l 14.5 ± 0.7 ohms at 20 ° C (68 ° F). The fuel injectors can fail in the following ways or supply incorrect signal: l Injector actuator open circuit. l Short circuit to vehicle supply. l Short circuit to vehicle earth. l Blocked injector. l Restricted injector. l Low fuel pressure. |