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 MANUALSHYUNDAI2013GENESIS COUPE 2.0T PREMIUMREPAIR AND DIAGNOSIS (SINGLE PAGE)ENGINE PERFORMANCESYSTEMENGINE CONTROL SYSTEM (DTC TROUBLESHOOTING) (2 OF 3) - 2.0LDTC P0456: EVAPORATIVE EMISSION SYSTEM-LEAK DETECTED (VERY SMALL LEAK)FUEL FILLER CAP INSPECTION
2013 Hyundai Genesis Coupe 2.0T Premium
Fuel Filler Cap Inspection
2013 Hyundai Genesis Coupe 2.0T PremiumSECTION Fuel Filler Cap Inspection
- Check fuel filler cap for being tightly installed, has o-ring seal installed and is in good condition.
- Verify cap releases pressure/vacuum at specified values
Specification : Approx. 2 psi pressure and approximately 1.5 inches of mercury vacuum).
- Are cap, o-ring and release pressures okay?
YES
- Thoroughly check fuel filler pipe for cracks and damage, and check o-ring seating for deformation. Replace as necessary, and go to the next Inspection procedure.
NO
- Replace fuel filler cap 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.