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  1. #1

    Question 1993 Chevy Throttle Body Injection Unit Overhaul

    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. #2


    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 by RayVoy; 08-13-2012 at 07:15 PM.

    '09 Avalanche LTZ - Black
    '05 Envoy XL (sold)

  3. #3


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

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