2008 Ford F250 Diesel Supplement 4th Printing - Page 4
2008 Ford F250 Manual
Page 4 highlights
Introduction • an engine-mounted secondary fuel filter • a unit injector for each cylinder The FCM/HFCM acts as a primary fuel filter/water separator which removes both water and impurities from the fuel. The engine mounted filter filters finer impurities from the diesel fuel. The engine-mounted fuel filter and the FCM/HFCM filter should be changed at the recommended service interval. Refer to the scheduled maintenance information in this supplement for more information. The FCM/HFCM should be drained at regular intervals or when the WATER IN FUEL light illuminates in the instrument cluster. The FCM/HFCM should be drained at regular intervals or when the WATER IN FUEL light illuminates in the instrument cluster. The fuel injectors are located in the center of the combustion chambers in the cylinder head between the rocker arm assemblies. The glow plug system and fuel injection system are controlled through the Powertrain Control Module (PCM) and Fuel Injection Control Module (FICM) (6.0L engine only). Fuel is drawn from the fuel tank by a frame-mounted electric fuel pump. The fuel pump provides pressurized fuel to the engine and is electronically controlled by the fuel pump PCM relay. The fuel pump contains a pressure relief valve for overpressure protection in the event of restricted flow. Engine protection mode Ford diesel engines are equipped with engine protection and emission control systems. These systems monitor critical temperatures and pressures, and modify engine operation accordingly. These features are intended to modify engine performance characteristics. If these modified engine performance characteristics persist for an extended period or the ) or powertrain malfunction/reduced service engine soon ( ) is illuminated, seek service power/electronic throttle control light ( from your authorized dealer. Lubrication system Extended oil change intervals can negatively affect engine performance, fuel economy and engine life. Refer to the engine oil specification chart located under Engine oil specifications in the Maintenance and Specifications chapter of this supplement. 4