Symptom Chart: Fuel System

Diagnostics in this manual assume a certain skill level and knowledge of Ford-specific diagnostic practices. REFER to DIAGNOSTIC METHODS for information regarding Ford-specific diagnostic practices.

NOTE: Refer to the Description and Operation, Intelligent Access with Push Button Start. REFER to PASSIVE ANTI-THEFT SYSTEM (PATS) - WITH INTELLIGENT ACCESS (IA) to review the procedures for achieving the various ignition states (ignition OFF, ignition in ACCESSORY, ignition ON and ignition START) on vehicles with this feature.

SYMPTOM CHART

Condition	Possible Sources	Actions
Slow to fill	Fuel tank filler pipe Fuel tank filler pipe vent tube, if equipped EVAP system Fuel tank inlet check valve (part of the fuel tank) Fuel level vent valve (part of the fuel tank)	REFER to Diagnostic Routine A: Slow to Fill .
All other fuel system concerns	Fuel system components	REFER to the appropriate service information article. .