Tag Archives for fuel

3116 and 3126 Truck Engines Air In Fuel

Probable Cause: Install a 4P8278 sight glass in the fuel return line and operate the engine to check for gas bubbles, an indication of air in the fuel system. With air in the fuel system the engine will normally be … Continue reading

25. July 2017 by sam
Categories: 3126 | Tags: , , , | Leave a comment

3116 and 3126 Truck Engines Problem Fuel In Lubrication Oil

Probable Cause(s): * Defective Upper Seal On Unit Injector * Porosity In Cylinder Head * Porosity In Fuel Filter Base * Defective Seal In The Fuel Transfer Pump 1. Defective upper seal on unit injector: Check for a defective O-ring … Continue reading

25. July 2017 by sam
Categories: 3126 | Tags: , , , , , | Leave a comment

3116 and 3126 Truck Engines Problem Fuel Consumption Too High

Probable Cause(s): * Air Inlet Restriction * Exhaust Restriction * Fuel System Leaks * Low Quality Fuel * Defect In Turbocharger * Fuel And Combustion Noise (Knock) * Defect In Unit Injector(s) * Improper Speed/Timing Calibration * Improper Vehicle Operation … Continue reading

25. July 2017 by sam
Categories: 3126 | Tags: , , , , | Leave a comment