This is a Remanufactured Bosch fuel pressure regulators for common rail fuel injection pumps.
- These are also known as MPROP's. The symptoms of a faulty MPROP would be rail pressure that is too high or too low.
- The MPROP will often fail before the pump does, getting stuck and causing the symptoms mentioned above.
||6.6L Duramax LBZ-LMM
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- Remove the cap screws and Fuel Control Actuator (FCA).
- Twist and pull FCA to remove.
- Lubricate the new Fuel Control Actuator (FCA) O-ring with clean oil before installation.
- Turn the FCA in a clockwise direction while pressing it into the bore. Be sure that the FCA flange is flush with the mounting surface on the Fuel Injection Pump.
- Install the capscrews by hand.
- Then tighten capscrews to 7Nm (62 in-lbs) .
- Plug the electrical connector back into the FCA.
- Start the Truck and observe for leaks.