Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
2018 Kia Niro Touring Graphite EditionFACTORY OEM SERVICE PROCEDURE
Engine Control System
ENGINE CONTROL SYSTEM TIGHTENING TORQUE SPECIFICATIONS
| Item | kgf.m | N.m | lb.ft |
|---|---|---|---|
| ECM mounting nut | 1.0 - 1.2 | 9.8 - 11.8 | 7.2 - 8.7 |
| Mass air flow sensor clamp mounting screw | 0.3 - 0.5 | 2.9 - 4.9 | 2.2 - 3.6 |
| Mass air flow sensor mounting bolt | 0.4 - 0.6 | 3.9 - 5.8 | 2.8 - 4.3 |
| Manifold absolute pressure sensor Intake Air Temperature Sensor [IATS] mounting bolt | 1.0 - 1.2 | 9.8 - 11.8 | 7.2 - 8.7 |
| Engine Coolant Temperature Sensor | 3.0 - 4.0 | 29.4 - 39.2 | 21.7 - 28.9 |
| Crankshaft position sensor mounting bolt | 1.0 - 1.2 | 9.8 - 11.8 | 7.2 - 8.7 |
| Camshaft position sensor [Bank 1/Intake] mounting bolt | 0.8 - 1.2 | 7.8 - 11.8 | 5.7 - 8.7 |
| Camshaft position sensor [Bank 1/Exhaust] mounting bolt | 0.8 - 1.2 | 7.8 - 11.8 | 5.7 - 8.7 |
| Knock sensor mounting bolt | 1.9 - 2.4 | 18.6 - 23.5 | 13.7 - 17.4 |
| Heated oxygen sensor [Bank 1/sensor 1] mounting | 4.0 - 5.0 | 39.2 - 49.1 | 28.9 - 36.2 |
| Heated oxygen sensor [Bank 1/sensor 2] mounting | 4.0 - 5.0 | 39.2 - 49.1 | 28.9 - 36.2 |
| Rail pressure sensor | 3.0 - 3.5 | 30.0 - 34.3 | 22.1 - 25.3 |
| Electronic throttle body mounting bolt | 0.8 - 1.0 | 7.8 - 9.8 | 5.8 - 7.2 |
| Accelerator pedal module mounting bolt | 1.3 - 1.6 | 12.7 - 15.7 | 9.4 - 10.6 |
| Electric EGR Control Valve mounting bolt | 1.0 - 1.2 | 9.8 - 11.8 | 7.2 - 8.7 |
| Variable force solenoid [Bank 1/Intake] mounting bolt | 1.0 - 1.2 | 9.8 - 11.8 | 7.2 - 8.7 |
| CVVT oil control valve [Bank 1/Exhaust] mounting bolt | 1.0 - 1.2 | 9.8 - 11.8 | 7.2 - 8.7 |
Factory Service Tools
Use the Manual With the Right Hardware
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.
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