FUEL SYSTEM7-12 TNV DI Service ManualFuel System SpecificationsTest and Adjustment SpecificationsNote: Fuel injection pressure of a new fuel injector is reduced approximately 72.5 psi (0.5 MPa; 5.0kgf/cm2 ) after about 5 hours of operation due to the initial break in of the engine. When adjusting anew fuel injector or after it has been disassembled for service, adjust the fuel injector 72.5 psi (0.5MPa; 5.0 kgf/cm2 ) higher than the above standard.Note: All fuel injectors have a three character identification mark (Figure 7-3, (1)). The first characterstarts with “V” or “W”.Figure 7-3** Fuel injector identification is critical as each engine has a unique fuel injection pressure. The fuelnozzle is specifically matched to the fuel injector by engine model and / or engine speed.Model EngineClassInjector IDmark* Fuel Injector Pressure Fuel Injection Timing3TNV82A - 4TNV88 CL W2843 - 2988 psi(19.6 - 20.6 MPa;200 - 210 kgf/cm 2)See Checking and Adjusting FuelInjection Timing on page 7-303TNV82A - 4TNV883TNV84T - 4TNV84T VMW**2843 - 2988 psi(19.6 - 20.6 MPa;200 - 210 kgf/cm2)or orV**3133 - 3278 psi(21.6 - 22.6 MPa;220 - 230 kgf/cm2)4TNV94L - 4TNV1064TNV98T - 4TNV106TCLVM V3133 - 3278 psi(21.6 - 22.6 MPa;220 - 230 kgf/cm2)0004105(1)
