In cold weather, the fuel filter may become clogged by wax naturally present in the fuel. To unclog it, move the vehicle to a warm garage area and allow the filter to warm up.
The fuel filter may need to be replaced. See Fuel Filter Replacement (Diesel).
At temperatures belowC (32 F), it is recommended to avoid using biodiesel blends above 5% blend.
This blend may cause fuel filter plugging, system gelling, and freezing that may affect vehicle starting. You may need to turn the ignition on and off a few times before the vehicle will start. Also, idle the vehicle for a couple of minutes before accelerating.
Biodiesel
Water in Fuel (Diesel)Water Pump Cleaning and Inspection Engine Cooling Coolant Pump
Cleaning ProcedureCaution:Do not immerse the water pump in solvent. The solvent mayenter the water pump's permanently lubricated bearings and causepremature bearing failure.Remove the old gasket material from the water pump sealingsurfaces.Clean all excess dirt and debris from the water pumphousing. ...