KIA Niro: On vehicle inspection/ Component Inspection

Kia Niro - First generation - (DE) (2017-2022) - Service and Repair Manual / Maintenance / On vehicle inspection/ Component Inspection

On vehicle inspection

Accelerate the engine to about 3,000 rpm 3 times or more.
Remove the spark plug.
Check the spark plug visually.

If the electrode is dry, the spark plug is normal.

If the electrode is wet, check the damage and electrode gap as below.

Component Inspection

Check the spark plug for any damage on its thread and insulator.

If there is damage, replace the spark plug.
Check the electrode. Measure the insulation resistance with an ohmmeter.

If the resistance is less than the specified value, adjust the electrode gap.

Specification: 10 MΩ or more

Check the spark plug electrode gap.

If the gap is greater than the maximum, replace the spark plug.

Specification: 0.7 - 0.8 mm (0.0276 - 0.0314 in.)

Warning

If adjusting the gap of a new spark plug, bend only the base of the ground electrode. Do not touch the tip.

Never attempt to adjust the gap on a used plug.

Replacement

Replacement

Remove the ignition coil.

(Refer to Ignition System - "Ignition Coil")
Using a spark plug wrench, remove the spark plug (A).

spark plug :
19.6 - 24.5 N*m (2.0 - 2.5 kgf*m, 14.5 - 18.0 Ib*ft)

Warning

Be careful that no contaminates enter into spark plug holes.

Install in the reverse order of removal.

Vapor hose

Check all the clamps for tightness and the connections for leakage.
Visually check the vapor lines and hoses for cracks, leaks, loose connections, or deformation.

Fuel filler cap

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

Oil Level Check

Remove the under cover. (Refer to Engine Mechanical System - "Engine Room Under Cover") Remove the oil filler plug (A or B). Check the condition of the oil and make sure that it is at the proper level (A). Inst

Front Brake

Inspection Check the pads for excessive wear, discs for run out and wear, and calipers for fluid leakage. Front brake disc thickness check Check the brake pads for wear and fade. Check the brake disc for damage and cracks. Remove all rust

Rear Brake

Rear Brake Disc Thickness Check Check the brake pads for wear and fade. Check the brake disc for damage and cracks. Remove all rust and contamination from the surface, and measure the disc thickness at 8 points, at least, of same distanc

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Parking brake

Check if the brake warning light ( ) appears when the vehicle is in the START or ON position. Be sure the parking brake is fully released and the brake warning light ( ) is off before driving. WARNING- (Kia Niro EV only) To reduce the ris

Relay Box (Passenger Compartment) Repair procedures

Fuse Inspection Check that the fuse holders are loosely held and that the fuses are securely fixed by the holders. Check that each fuse circuit has the exact fuse capacity. Check the fuses for any damage. Warning If a fuse is to be rep