Fuel Filler Neck
The fuel filler neck is the pipe from the filler cap to the tank.
What is Fuel Filler Neck?
It includes a restrictor for the correct nozzle size. Some cars have misfuelling protection. Capless systems have a spring flap. A loose cap, a damaged seal or a cracked neck can all set evaporative system leak codes. Some cars have a separate breather line along the neck. Diesel cars often have a wider opening and misfuel flap to keep petrol nozzles out.
How it works
Fuel flows down the neck into the tank.
Why it matters for your car
Rusted necks can leak and set EVAP codes. Check the seal if the fuel cap light comes on.
Other terms
- Air Quality Sensor
- All-Terrain Tyre (A/T)
- Borescope (Inspection Camera)
- Charge Air Pipe (Boost Hose)
- Column Gear Shift
- Control Arm
- Driving In Hot Weather
- Engine Braking
- GPS Tracker (Vehicle Tracking)
- Ignition Distributor
- Open Circuit
- Power Band
- Studded Tyre
- Tappet Noise (Lifter Tick)
- Trip Computer
- Two-bucket Wash Method
- Tyre Bead
- Tyre Dressing
- Wheel Arch Liner (Inner Fender)
- Windscreen Chip Repair