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1993 Chevy Throttle Body Injection Unit Overhaul

Discussion in 'Chevy Truck Talk & GM News' started by Big_Mike, Aug 13, 2012.

  1. Big_Mike

    Big_Mike Member 100 Posts

    I am currently in the process of overhauling a TBI unit for my '93 Chevy. It is gummed up rather badly. I have tried using throttle body cleaner and a tooth brush to clean it, but I am not satisfied with the results. Anyone have an idea or method that will work better? I plan on having the injectors cleaned and tested as well. I was wondering if the main body could be given a "bath"? Thanks.
  2. RayVoy

    RayVoy Active Member 2 Years 1000 Posts

    A lot of throttle body (and brake) cleaners use acetone, not a big fan.

    The build-up inside a TB is from petroleum by-products (hydrocarbons), usually the best thing to clean petroleum by-products is a solvent made from petroleum by-products, something like Varsol.

    After cleaning with the Varsol, the acetone based cleaner will finish the job and remove any Varsol residue.
    Last edited: Aug 13, 2012
  3. Big_Mike

    Big_Mike Member 100 Posts

    I thank you for your advice, will keep it in mind.

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