C175-16 Locomotive Engine Caterpillar

Fuel Pressure Is Low - Fuel Supply System

Usage:

Use this procedure in order to troubleshoot a problem with the fuel supply system.

Probable Causes

Fuel filter/water separator problem (customer installed component)
Fuel tank level is low
Vent port at the fuel tank is plugged
Fuel line restriction

Recommended Actions

Note: The procedures have been listed in order of probability. Complete the procedures in the order of the listed test steps.

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Table 1
Troubleshooting Test Steps	Values	Results
1. Check the Installation for Fuel Filter/Water Separator (Customer Installed System) A. Ensure that any fuel filters and/or water separators that have been installed by the customer have had the proper maintenance.	Fuel filter	Result: The installation is OK. Proceed to the next step. Result: The installation is NOT OK. Repair: Correct the installation. If the problem is not resolved, proceed to the next step.
2. Check the Fuel Level in the Tank A. Visually inspect the fuel level in the fuel tank. Ensure that the fuel tank contains enough fuel in order to operate the engine. B. Ensure that the fuel supply valve (if equipped) is in the full OPEN position.	Fuel Level	Result: The fuel level is OK. Proceed to the next step. Result: The fuel level is NOT OK. Fill the tank. Verify that the problem has been resolved. If the problem is not resolved, proceed to the next step.
3. Inspect the Fuel Tank Vent Port for Debris	Vent	Result: The fuel tank vent is not plugged. Proceed to the next step. Result: The fuel tank vent is plugged. Repair: Clear any restrictions with compressed air. Do not allow debris to enter the fuel tank while you clean the cap. Damage to the fuel system will occur. If the problem is not resolved, proceed to the next step.
4. Inspect the Fuel Lines for Damage and Restriction	Lines	Result: The fuel lines are OK. Proceed to the next step. Result: The fuel lines are NOT OK. Repair: Clear restrictions and replace any damage lines. If the problem is not resolved, proceed to the next step.