Pinpoint Tests: Notes

Slow to Fill 

Diagnostic Overview 

Slow to Fill 

Normal Operation and Fault Conditions 

Under normal operation, fuel should flow at a steady rate through the fuel tank filler pipe into the fuel tank. As fuel enters the fuel tank air is vented through the filler pipe or the ORVR system.

• Fuel tank filler pipe vent tube, if equipped
• Fuel tank filler pipe
• EVAP system
• Fuel tank inlet check valve (part of the fuel tank)
• Fuel level vent valve, if equipped (part of the fuel tank)
• Fuel system fresh air inlet