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On the drivers side of the fuel filter is the HPOP. It has 2 big lines coming off it, one to each head. On the rear of the HPOP, down low in the valley, is the IPR. It will have a 3/4" stamped steel nut on the back, a spacer, and then the IPR coil with a 2 wires. It is only a few inches away from the ICP sensor.
WHAT IS ,IPR,IPCSENSOR
IPR stands for Injection pressure regulator. IPC stands for injection pressure control.
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