96 ENGINE COMPONENT AND LOCATION 1 Fuel Pump 16 Electrical Water Drain Valve 2 Fuel Tank and Inlet Tube 17 Automatic Air Bleed Valve ( closes when filter removed) 3 EECU Cooler 4 Fuel Filter Housing 18 Service Port (Pressure Gauge) 19 Supply Pressure Sensor 5 Fuel Pre-Filter 6 Water Cup 20 Fuel Heater (Optional) 7 Secondary (Main) Filter 21 Service Shut-Off Valve ( closes when filter removed) 8 Fuel Gallery 22 One-Way Valve ( Hand Priming) 9 Unit Injector 23 Automatic Bleed Valve 11 Pump Safety Valve (Pressure Regulator) 10 Pressure Regulator Valve 24 Fuel Tank Breather 25 AFI Shut-Off Valve 12 One-Way Valve 27 Deaeration Valve 26 Line to AFI 13 Hand Pump Handle 14 Water Level Sensor 15 Water Discharge Control Switch (Instrument Panel) The fuel pump attaches with the power steering pump to the flywheel housing at the rear left side.
It turns on the same shaft as the power steering pump. The common drive gear meshes with the auxiliary idler driven by the crankshaft gear. At 600 rpm, the pump delivers a minimum 100 kPa (14.5 psi), and at 1200 rpm, 300 kPa (43.5 psi). At 400–550 kPa (58?80 psi), the gallery regulator valve opens to control fuel gallery pressure. Fuel is drawn by the pump from the tank into the EECU cooling plate and the primary filter at the left side of the engine and on to the pump inlet. Under pressure, fuel then flows from the pump to the secondary filter and the fuel gallery in the cylinder head.
Fuel pressure within the gallery is controlled by a pressure regulator valve which returns excess fuel to the tank.