![]() ![]() There are 08 most common symptoms of Duramax CP3 pump failure, including low fuel pressure, no start, knocking sound, black smoke, fuel injector issue, longer crank time, etc.Īlthough the CP3 fuel pump handles more horsepower and lasts longer than the CP4, it has these common symptoms.Īll these 08 problems are minor, So you don’t have to worry about them. With proper maintenance, CP3 injection pumps last 200,000 to 250,000 miles. ![]() While CP4 has many complaints about longevity, CP3 has a reputation for a long lifespan and superior performance.ĬP3 is designed to play an active role in high-mileage engines. The CP3 is known for its high-pressure output and durability. It is commonly called a high-pressure injection pump since it creates and controls high-pressure fuel.Ī CP3 injection pump mainly regulates and increases required pressure and volume using electronics and FCA (Fuel Control Actuator). The CP3 injection pump has been used since Duramax was introduced in 2001.Ī CP3 pump is built with a three-piston metered inlet pump.ĬP3 pumps are also used in Dodge Cummins engines since 2003. However, most people think that CP3 stands for Common Rail High-Pressure Pump.Ĭommon Rail High Pressure Pump is not official elaboration of CP3. Final Words What Does CP3 Pump Stand for?įrom the German language comes the word CP.Īctually, it doesn’t mean anything special.How Do You Test a CP3 Fuel Pump on a Duramax?.How Much Does It Cost to Replace a CP3 Pump on a Duramax?.Blue or White Smoke at Idle in Cold Weather ![]()
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