The 6.5L diesel engine uses the Stanadyne model DS rotary distributor fuel pump consisting of the following components (figure 4-5): • A fuel solenoid driver that determines fuel metering by controlling the fuel solenoid • An optical/fuel temperature sensor that supplies the PCM with pump speed, rotor position, cam ring position and fuel temperature information… Read More »
The fuel filter assembly (figure 4-4) mounts on the rear of the intake manifold. Two bolts hold the assembly in place. The filter housing has two primary fittings: • an inlet fitting connecting to the pipe/hose from the lift pump • an outlet fitting connecting to the fuel injection pump with a hose A third… Read More »
The inlet fitting of the lift pump connects to the fuel tank pick-up/sending unit fuel supply fitting, using a pipe/hose assembly with o-rings. The outlet fitting of the lift pump connects to the inlet fitting of the fuel filter assembly on the engine, using another pipe/hose assembly. The electric lift pump has a hollow plunger… Read More »
The fuel control system delivers fuel from the fuel tank to the injectors via a series of pumps, filters, passageways, and ports. Accumulators and regulators help maintain pressure throughout the system for optimum fuel delivery and performance. The 6.5L EFI delivers fuel using the same basic components as the non-electronic version. System components include (figure… Read More »
As part of its emission controls, some 6.5L EFI engine uses a palladium-oxidation catalytic converter (see chart on page 1-2 for 6.5L catalytic converter applications). The converter differs somewhat from traditional gasoline converters. Its primary function is to oxidize the organic elements of exhaust gas before it is passed to the exhaust system. It is… Read More »
The 6.5L EFI diesel turbocharger provides a variety of benefits. It increases engine response time and power, while also reducing exhaust emissions. When the pressure of exhaust gases entering the turbo charger exceeds specified levels, these gases are by passed directly to the exhaust pipe. The turbocharger uses a solenoid-controlled wastegate valve (figure 3-2) to… Read More »
The air induction and exhaust systems of the 6.5L EFI V8 diesel engine include the following parts (figure 3-1): • Outside air intake duct and air filter assembly • Turbocharger assembly • Air inlet duct • Crankcase ventilation system • Exhaust pipes and muffler
The cast aluminum intake manifold connects the air induction system inlet duct to the intake ports of each cylinder head (figure 2-3). Features of the intake manifold include: • Mounting of the air inlet duct with bolts and a paper gasket • Mounting to each cylinder head with bolts and studs, as well as a… Read More »
The front cover is made of cast aluminum and has several features (figure 2-2): • Mounting surfaces for the crankshaft front seal, water pump assembly, injection pump, and accessory supports • Sealing surfaces at the cylinder case and oil pan • Cooling system passages • A timing bracket for service purposes • A hole for… Read More »
The mechanical system of the 6.5L EFI V8 diesel engine includes the following component groups (figure 2-1): • Cylinder case assembly • Cylinder head assemblies • Valve train • Front cover • Injection pump drive • Intake manifold • Exhaust manifolds