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.
System Inspection
2014 Hyundai Azera BaseSECTION System Inspection
- Check Spark Plug
- Remove cylinder's spark plugs.
- Visually/physically inspect the following items:
- Damaged insulation, Worn electrodes, Oil or fuel fouled, Loose terminals and cracks.
- Check for plug gap: 1.0 - 1.1 mm (0.039 - 0.043 in.)
- Check if the spark plug for the relevant cylinder is lighter in color than the other plugs.
- Has a problem been found in any of the above areas?
YES
- Repair or replace as necessary and go to "VERIFICATION OF VEHICLE REPAIR " procedure.
NO
- Go to " 2 Check Air Leakage" as below.
- Check Air Leakage
- Visually/physically inspect the air leakage in intake/exhaust system as following items:
- Vacuum hoses for splits, kinks and improper connections.
- Throttle body gasket.
- Gasket between intake manifold and cylinder head.
- Seals between intake manifold and fuel injectors.
- Exhaust system between HO2S and Three way catalyst for air leakage.
- Has a problem been found in any of the above areas?
YES
- Repair or replace as necessary and go to "VERIFICATION OF VEHICLE REPAIR " procedure.
NO
- Go to " 3 Check for air leakage in Positive Crankcase Ventilation Valve (PCV)".
- Visually/physically inspect the air leakage in intake/exhaust system as following items:
- Check for air leakage in Positive Crankcase Ventilation Valve (PCV)
- Remove PCV valve from cylinder head cover by puling ventilation hose.
- With engine idling block PCV valve opening.
- Verify that vacuum is felt.
- Remove PCV valve.
- Blow through valve from port "A" and verify that air comes out of port "B".
- Blow through valve from port "B" and verify that no air comes out of port "A".
- Has a problem been found in any of the above areas?
YES
- Repair or replace as necessary and go to "VERIFICATION OF VEHICLE REPAIR " procedure.
NO
- Go to " 4 Check Compression pressure" as below.
- Check Compression pressure
- Warm up the engine to normal operating temperature.
- Disconnect the spark plug cables and remove the spark plugs.
- Crank the engine to remove any foreign material in the cylinders.
- Put compression pressure gauge into spark plug hole.
- Crank the engine with widely opened throttle valve and check compression pressure at each cylinder.
Specification: 1323 kPa (13.5 kg/cm2 , 192 psi)
- Is compression pressure for each cylinder displayed within specifications?
YES
- Go to " 5 Check Timing" as below.
NO
- Add a small amount of oil through the spark plug hole, and repeat above steps. If the addition of oil causes the compression to rise, the cause is a worn or damaged piston ring or cylinder inner surface.
- If the compression remains the same, the cause is a burnt or defective valve seat, or pressure is leaking from the gasket. Repair as necessary and go to "VERIFICATION OF VEHICLE REPAIR " procedure
- Check Timing
- IG "OFF"
- Monitor these signal waveforms from CAM and Crank shaft position Sensor are correctly aligned.
Reference: The 17th of CKP signal from missing tooth is aligned with high of CMP signal.
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.