Symptom Chart: Fuel System

Diagnostics in this article assume a certain skill level and knowledge of Ford-specific diagnostic practices. REFER to SERVICE INFORMATION , Diagnostic Methods for information regarding Ford-specific diagnostic practices.

SYMPTOM CHART - FUEL SYSTEM

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) Fuel system fresh air inlet	GO to Pinpoint Test A .
All other fuel system concerns	Fuel system components	REFER to the ENGINE CONTROLS - INTRODUCTION (EXCEPT DIESEL & HYBRID) (SECTION 0) .