my Genesis G70 has poor acceleration, what could be the issue?

Solution

1. Preparation

• Gather tools and parts required for repairs.
• Disconnect the negative battery terminal to ensure safety.
• Allow the engine to cool if it has been running.

2. Replace Spark Plugs and Ignition Coils

• Tools Required: Socket set, torque wrench, spark plug socket.
• Sub-steps:
  1. Remove the engine cover if applicable.
  2. Unplug the ignition coils and remove them using a socket.
  3. Remove the old spark plugs using a spark plug socket.
  4. Install new spark plugs, ensuring they are gapped correctly (refer to manufacturer specs).
  5. Reinstall the ignition coils and reconnect the wiring harness.

3. Clean or Replace Throttle Body

• Tools Required: Throttle body cleaner, rags, socket set.
• Sub-steps:
  1. Disconnect the throttle body electrical connector and intake duct.
  2. Remove the throttle body from the intake manifold.
  3. Clean the throttle body using throttle body cleaner and a rag, removing all carbon deposits.
  4. Reinstall the throttle body and reconnect all electrical and intake connections.

4. Inspect and Clean Mass Airflow Sensor (if necessary)

• Tools Required: MAF sensor cleaner.
• Sub-steps:
  1. Disconnect the MAF sensor from the intake duct.
  2. Spray the MAF sensor with MAF cleaner and allow it to dry completely.
  3. Reinstall the MAF sensor and reconnect it to the intake.