Auto Repair/Mechanics in Milton Freewater, OR

http://www.wentlanddiesel.com/faq The typical pattern failures on the Duramax diesel engine include hard starting (extended cranking time until it starts), and low power or light blue or white smoke out the exhaust. A hard start with extended cranking times is usually due to the fuel system being unable to achieve a high enough rail pressure for the engine to start. This can be caused by one or more of the injectors failing or a weak CP3 high pressure pump. Another source could be the FCA (fuel control actuator on the CP3 high pressure pump) to become stuck in a closed position. This FCA can also fail in a manner that causes surging at idle. Low power and light blue or white smoke at idle can be an indication that one or more injectors have begun to fail. The reason for stalling or extremely low power is most likely a plugged fuel filter. Note: GM has superseded the fuel filter for the Duramax engine and the updated part has a stepped design that has a smaller diameter on the bottom portion of the filter cartridge.