Step 2: Cleaning the combustion chamber

man scraping out built up carbon from furnace
Photo: Keller & Keller
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In the combustion chamber, fuel mixes with air and is ignited, generating heat—as well as carbon soot, water vapor, carbon dioxide, and worse. A buildup of soot can cause the chamber walls to corrode. Richard scrapes out built-up carbon using a small wire brush. Then he removes loose material with an industrial shop vacuum and inspects the chamber for holes or corrosion before replacing the cover.
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    Tools List

    • Phillips screwdriver
      Screwdriver
    • Wire brush
    • shop vacuum
      Shop vacuum
    • strap wrench
      Strap wrench
    • combustion analyzer
      Combustion analyzer

    Shopping List

    1. Foil tape

    2. Oil filter
    (for oil-powered systems)

    3. Air filter

    4. Oil nozzle
    (for oil-powered systems)