How to Bore Out a Throttle Body: A Step-by-Step Guide

  1. Gather the necessary tools such as a bore gun, bore paste or lube, a bucket, water, thinner or solvent, a funnel, gloves, and a flat-head screwdriver or pliers.
  2. Drain the old fluid from the throttle body to avoid contamination during cleaning.
  3. Clean the throttle body by inserting a bore gun with bore paste or lube into the bores and rotating the handle in circular motion to loosen dirt and debris. Pour water or thinner into the bores, being careful not to overfill.
  4. Remove old gasket from the throttle body and carefully remove any debris or rust stuck to it.

  5. Install new gasket and bores onto the throttle body, making sure they sit flush with each other. Tighten the gasket without over-tightening.
  6. Test the new throttle body by running the car for a few minutes, checking for leaks or unusual noises coming from the throttle body. If everything looks good, you have successfully boared out your throttle body.
  7. FAQs: What happens if my throttle body becomes clogged? A clogged throttle body can cause poor acceleration and reduced fuel efficiency.

    How often should I clean my throttle body?

    It is recommended to clean every 20,000 to 30,000 miles to ensure optimal engine performance.

    Can a professional clean my throttle body?

    Yes, but it can be more expensive than doing it yourself.

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