Kia Niro: Power Train / Vapor Hose and Fuel Filler Cap Repair procedures

Inspection

Vapor hose

1.	Check all the clamps for tightness and the connections for leakage.

2.	Visually check the vapor lines and hoses for cracks, leaks, loose connections, or deformation.

Fuel filler cap

1.	Visually check that the fuel tank cap assembly and gasket (A) are not deformed or damaged.

Inspection [On vehicle inspection] 1. Accelerate the engine to about 3,000 rpm 3 times or more. 2. Remove the spark plug. ...

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Kia Niro 2017 (DE HEV) Service Manual: Components and components location
Component Location 1. Fuel filler door open switch 2. Fuel filler door release actuator ...