Fuel

CP3 INJECTION PUMP DESCRIPTION A Robert Bosch high-pressure CP3 fuel injection pump is used. The CP3 pump is attached to the back at the timing gear housing at the left ftront side of the engine.   OPERATION The CP3 fuel injection pump supplies high pressure to the fuel rail independent of engine speed. This high pressure is then accumulated in the fuel rail. High-pressure fuel is constantly supplied to the injectors by the fuel rail. The Engine Control Module (ECM) control

FUEL CONTROL ACTUATOR   DESCRIPTION The Fuel Control Actuator (FCA) (3) is located at the rear of the high-pressure, fuel injection pump.   OPERATION The Fuel Control Actuator (FCA) is an electronically controlled solenoid valve. The ECM controls the amount of fuel that enters the high-pressure pumping chambers by opening and closing the FCA based on a demanded fuel pressure. When the FCA is opened, the maximum amount of fuel is being supplied to the fuel injection pump.

on 2013+ trucks there are 2 filters that should be changed every 15,000 miles.  this should be done when you do your oil filter   Parts needed / Part number 1. 68197867AB fuel Filter 2. 68157291AA Water separtor 3. 29mm socket f or the fuel filter cap 4. ratchet / extensions / elbows  5. oil filter rubber wrench is helpful for the water seperator   Filter Locations     Filter 1 is on the driver side of the engine mounted to the bl

FUEL HEATER OPERATION The fuel heater is used to prevent diesel fuel from waxing during cold weather operation. When the fuel temperature is below 45° ±8 F (7°C), the temperature sensor allows current to flow to the heater element warming the fuel. When the fuel temperature is above 75 0 ±8 F (24°C), the sensor stops current flow to the heater element. Battery voltage to operate the fuel heater element is supplied from the ignition switch and through a solid stated device in the TIPM. The fue

Grid Heater Light On While Driving   If you happen to notice your grid heater light is on while your driving this is a sign of injector failure. The ECM has the ability to detect excessive return flow from the injectors. Grid heater light is a warning to the owner that the injectors are worn out and all six injectors should be replaced very soon.     

FUEL SYSTEM PRIMING A certain amount of air becomes trapped in the fuel system when fuel system components on the supply and/or high-pressure side are serviced or replaced. Fuel system priming is accomplished using the electric fuel transfer (lift) pump.   Servicing or replacing fuel system components will not require fuel system priming. The fuel transfer (lift) pump is self-priming: When the key is first turned on (without cranking engine), the pump operates for approximately 1