The Fuel Delivery System or FDS is a group of components used to move fuel from the tank to the dispenser shear valve. This in includes the STP or motor, PMA assembly, and STP or motor controller. Troubleshooting the components of the system in order will generally result in a successful repair.
Common FDS related issue are:
- Product down
- Intermittent slow flow
- Constant slow flow
- Line test failures
Troubleshoot the following devices in order.
Step 1: Motor controller
Step 2: Electrical properties of the UMP or motor
Step 3: Dispenser Hook Signals
Step 4: Hydraulic properties of the UMP or motor
Click the following links for the next steps:
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