What is a CP3 on a diesel?

The CP3 is a 3 piston metered inlet pump. By metered inlet that means that the Fuel Control Actuator valve controlled by the ECM meters fuel going into the pumping chambers to control how much fuel the CP3 pumps and thus the engine rail pressure.

What does CP3 pump stand for?

High-Pressure Injection Pump
High-Pressure Injection Pump (CP3 Pump) The pressure is supposed to default to a max of 26,107 PSI when you unplug the fuel control actuator. Generally, the injectors are afflicted first, however, contaminants also will go through the CP3 pump.

How does CP3 pump work?

The injection pump uses electronics and a Fuel Control Actuator (FCA) to regulate this pressure and increase volume and pressure as requested. Since an engine will need less volume and pressure at idle than it would under a heavy wide-open throttle run, the pressure regulator is key to a proper functioning CP3.

How much does a CP3 fuel pump cost?

The cost of doing just the LML CP4. 2-to-CP3 conversion is about $3,500 for parts and labor.

What causes low fuel rail pressure Cummins?

Most starting problems due to low pressure are caused by bad (eroded check ball seat) injectors. You can unplug the fuel control actuator and the pressure should default to maximum (26,107 PSI), however if there is a leak in the injection system then the pump will not build enough pressure.

Why is Chris Paul CP3?

Chris Paul was born in Winston-Salem, North Carolina, to Charles Edward Paul and Robin Jones. His family gave him the nickname “CP3” because he, his father, and his brother all share the same initials.

Which Duramax has CP4?

The CP4. 2 is used in GM 6.6L Duramax LML, Ford 6.7L Power Stroke, and 2019-to-present 6.7L Cummins powerplants.

What are the signs of a bad diesel injector?

Here are the 5 most common symptoms of faulty diesel fuel injectors.

  • Trouble starting the vehicle or uneven idling. The engine cranks but doesn’t start unless you crank it for a long time.
  • Misfire.
  • Smell of fuel.
  • Dirty emissions.
  • Increased fuel consumption and poor miles per gallon.

How much fuel pressure should a diesel have?

As a general rule, CRD vehicles need at least 2000 psi to start the engine. One thing to remember is that high pressure is built by taking a larger volume of fuel and compressing it into a smaller sealed or restricted area.