FDS3 - Check Fuel Pressure Leakdown

^ Observe Service Precautions to avoid fuel spillage and injury.

^ Connect the fuel pressure test kit at the fuel pressure test point.

^ Enter Output Test Mode and run the fuel pump to obtain maximum fuel pressure.

^ Exit Output Test Mode, Key Off.

^ Verify fuel pressure remains within the 5.0 psi for 1 minute after turning pump off.

^ Does fuel pressure remain within 5.0 psi?

YES -- Go to FDS5. FDS5 - Check Fuel Pressure, Engine Running

NO -- Go to FDS4. FDS4 - Check Pressure Regulator Diaphragm Condition