A lift pump and a fuel pump might be part of the same system that delivers fuel to a diesel engine, but they have very different roles to play.
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How To Tell If Your Truck Has A CP4 Fuel Pump
If you browse forums often, chances are you've come across some heated discussions around the CP4 fuel pump. The CP4, short for "Common Rail Pump 4," is a high-pressure fuel injection pump that made ...
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