Fuel System | Caterpillar Engines Troubleshooting

Tag Archives for fuel system

3116 and 3126 Truck Engines Fuel Priming Procedure

If the engine fuel system is run dry, fill the fuel tank and prime (purge) the fuel system to remove air bubbles from the system. 1. Locate the fuel priming pump red selector knob. 2. Turn red selector knob away … Continue reading

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

3116 and 3126 Truck Engines Fuel System Inspection

A problem with the components that send fuel to the engine can cause low fuel pressure. This can decrease engine performance. Fuel System Fuel System (1) Fuel inlet port (to fuel transfer pump). (2) Tube assembly (fuel filter to fuel … Continue reading

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

3100 HEUI Diesel Truck Engine Fuel Injection

Inputs from the inlet air temperature sensor, the boost pressure sensor, and engine rpm are compared with the Fuel Ratio Control (FRC) maps. The output of this circuit is the FRC fuel position, which acts to limit fueling during acceleration … Continue reading

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

3100 HEUI Diesel Truck Engine Fuel System

Fuel System Schematic (AA) High pressure oil line. (BB) Unit injector wiring harness. (CC) Low pressure oil supply line. (DD) Fuel line. (EE) Low pressure oil return line. (1) High pressure oil manifold. (2) High pressure oil line. (3) Hydraulic … Continue reading

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