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.
2016 Kia Optima HybridFACTORY OEM SERVICE PROCEDURE
Fuel Delivery System
FUEL DELIVERY SYSTEM SPECIFICATIONS
| Items | Specification | |
|---|---|---|
| Fuel Tank | Capacity | 65 lit. (17.2 U.S.gal., 68.7 U.S.qt., 57.2 Imp.qt.) |
| Fuel Filter | Type | Paper type |
| Fuel Pressure Regulator | Regulated Fuel Pressure | 333 ~ 353 kPa (3.4 ~ 3.6 kgf/cm2 , 48.3 ~ 51.2 psi) |
| Fuel Pump | Type | Electrical, in-tank type |
| Driven by | Electric motor | |
FUEL DELIVERY SYSTEM TORQUE SPECIFICATIONS
| Item | kgf.m | N.m | lb-ft |
|---|---|---|---|
| Fuel tank band mounting nut | 4.0 ~ 5.5 | 39.2 ~ 54.0 | 28.9 ~ 39.8 |
| Fuel pump plate cover mounting | bolt 0.2 ~0.3 | 2.0 ~ 2.9 | 1.4 ~ 2.2 |
| Filler-neck assembly bracket mounting nut | 0.4 ~ 0.6 | 3.9 ~ 5.9 | 2.9 ~ 4.3 |
| Accelerator pedal module mounting bolt | 0.9 ~ 1.4 | 8.8 ~ 13.7 | 6.5 ~ 10.1 |
| Accelerator pedal module mounting nut | 1.0 ~ 1.5 | 9.8 ~ 14.7 | 7.2 ~ 10.9 |
| Delivery pipe mounting bolt | 1.9 ~ 2.4 | 18.6 ~ 23.5 | 13.7 ~ 17.4 |
| Delivery pipe mounting nut (↔ Fuel feed tube) | 0.8 ~ 1.0 | 7.8 ~ 9.8 | 5.8 ~ 7.2 |
Factory Service Tools
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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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