High Pressure Oil Control Subsystem 7.3L POWERSTROKE
IPR VALVE
"Injection Pressure Regulator"
HPOP
"high pressure oil pump"
HEUI Injector
IDM
"Injector drive module"
Overview
The High Pressure Oil Control system consists of the high-pressure oil reservoir, highpressure oil pump, injection control pressure regulator,
Injection Control Pressure (ICP). sensor, high-pressure hoses, and oil rails in the cylinder heads. The High Pressure Oil Control system is used to actuate
the HEUI fuel injectors. The PCM controls an electronic pressure regulator to regulate oil pressure to the injectors. The high-pressure oil flow within the fuel injectors
is controlled by a solenoid located on top of the injectors. Oil pressure supplies the force needed to pressurize the fuel in the injector to initiate fuel injection.
Original equipment high pressure oil pumps for International I-6 / 444E and Ford Power Stroke applications. As these units do not come equipped with an IPR valve,
the table below provides application and cross-reference information for service.
