why is my Genesis G70 engine running rough after a tune-up

Solution

1. Preparation

• Gather tools such as an OBD-II scanner, socket set, and multimeter.
• Disconnect the battery to ensure safety during electrical work.

2. Inspect Spark Plugs

• Remove the ignition coils and spark plugs using a socket wrench.
• Inspect each spark plug for damage or improper gap settings. Replace if necessary.
• Reinstall the spark plugs with the correct torque (typically 15-20 lb-ft).

3. Check Ignition Coils

• Test each ignition coil for functionality using a multimeter (check resistance values based on manufacturer specifications).
• Replace any faulty ignition coils.

4. Verify Fuel System

• Connect a fuel pressure gauge to the fuel rail to check for proper fuel pressure (refer to the manufacturer’s specifications).
• If pressure is low, inspect the fuel pump and fuel filter for blockages and replace as needed.

5. Inspect Air Intake

• Check the air filter for cleanliness and replace if dirty.
• Examine the intake manifold and throttle body for carbon buildup; clean if necessary.
• Ensure all hoses are securely connected without leaks.