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.
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HOMESERVICE MANUALSKIA2015OPTIMA SX TURBOREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT VARIANT/TRIMSECTION 107 (ENGINE CONTROL SYSTEM DIAGNOSIS (2 OF 3) - 2.4L (EXCEPT HEV))DTC P0455: EVAPORATIVE EMISSION SYSTEM-LEAK DETECTED (LARGE LEAK)SYSTEM INSPECTIONFUEL TANK LINE INSPECTION
2015 Kia Optima SX Turbo
Fuel Tank Line Inspection
2015 Kia Optima SX TurboSECTION Fuel Tank Line Inspection
WARNING: This page is about a different variant/trim than selected.
- Relieve the fuel system pressure and remove the fuel tank.CAUTION:
Before removing the fuel tank, make sure the fuel hoses are not leaking.
- Block all of the following outlets:
- Fuel lines
- Fuel filler neck
- Apply maximum of 10cmHg (4 inHg) pressure to the EVAP. hose at the fuel tank. Then, pinch the EVAP. hose to retain the pressure.
- Check the suspect area for leaks with a soap solution.
- Were any leak(s) found?
YES
- Repair or replace leaking system component(s) and go to "VERIFICATION OF VEHICLE REPAIR " procedure.
NO
- Check for poor connection between PCM and component: backed out terminal, improper mating, broken locks or poor terminal to wire connection. Repair as necessary and go to "VERIFICATION OF VEHICLE REPAIR " procedure.
RENDER: 1.0x
NO RELATED
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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.