How to adjust throttle body screw

The throttle body screw is a critical component in your car’s engine that controls airflow into the engine, ensuring proper combustion and preventing damage to the engine. Adjusting this screw can significantly improve performance and increase power. This article provides a step-by-step guide on how to adjust the throttle body screw for optimal performance.

To adjust the throttle body screw:

  1. Identify its location on your car’s engine.
  2. Remove the nuts holding the throttle body in place with a wrench or socket set, but be careful not to remove too many at once.
  3. Inspect the throttle body for any signs of wear or damage before making adjustments.
  4. Using an adjustable wrench, turn the throttle body screw clockwise until reaching the desired setting.
  5. Reinstall the throttle body onto the engine and tighten the nuts that hold it in place, but do not over-tighten to prevent damage to the engine.

When adjusting the throttle body screw:

  1. Always use a torque wrench or socket set when tightening nuts.
  2. If you’re unsure how to adjust the throttle body screw, consult with a qualified mechanic.
  3. Clean the throttle body and surrounding areas before making any adjustments.
  4. Follow manufacturer recommendations for adjusting the throttle body screw to ensure optimal engine performance and prevent damage.


  1. Adjusting the throttle body screw can improve fuel efficiency, but this varies depending on your car’s make and model.
  2. It is recommended to adjust the throttle body screw once a year or as needed based on your driving habits and vehicle maintenance records.

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