KIA Niro: Fuel Tank Air Filter Repair procedures

Fuel Filler Cap Description and operation


A ratchet tightening device on the threaded fuel filler cap reduces the chances of incorrect installation, which seals the fuel filler. After the gasket on the fuel filler cap and the filler neck flange contact each other, the ratchet produces a loud clicking noise indicating the seal has been set.



  1. Turn ignition switch OFF and disconnect the negative (-) battery terminal.
  2. Remove the filler-neck assembly.

    (Refer to Engine Control / Fuel System - "Filler-Neck Assembly")

  3. Disconnect the vent hose (A).

  1. Remove the fuel tank air filter (B) after loosening the mounting bolts (A).



  1. Install in the reverse order of removal.


     Exhaust Emission Control System

    Description Exhaust emissions (CO, HC, NOx) are controlled by a combination of engine modifications and the addition of special control components. Modifications to the combustion chamber, intake manifold, camshaft and ignition system form t

     The Gasoline Particulate Filter (GPF)

    Description The Gasoline Particulate Filter (GPF) system prevents Particulate Matter (PM) from being discharged to the atmosphere and consists of a filter assembly, two Exhaust Gas Temperature Sensors (EGTS). The filter is integrated in the cat

     Engine Control / Fuel System

    Specifications Fuel Delivery System Sensors Manifold Absolute Pressure Sensor (MAPS) Type: Piezo-resistive pressure sensor type Specification Intake Air Temperature Sensor (IATS) Type: Thermistor type Specification


     Connecting Rod

    Check the connecting rod side clearance. Using a feeler gauge, measure the end play while moving the connecting rod back and forth. If out-of-tolerance, install a new connecting rod. If still out-of-tolerance, replace the crankshaft.

     ON-Board Charger (OBC)

    HPCU (Hybrid Power Control Unit) ON-Board Charger (OBC) Normal Chage Port Power Cable (HPCU‚†”HSG, Electric /C Compressor) Power Cable (HPCU‚†”Main High Voltage Battery System) Power Cable (