Direct Injection Valve Cleaning

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    • Gear Head
    • ★★★

    I was thinking about doing this myself, especially since I will have the intake manifold off for other work on the car..  As I understand, the best method to do so is to walnut blast the intake ports…  For anyone in the know — I am curious if something like this blasting gun would be able to perform the task, or if something more powerful with a pressurized tank would be needed…

    Thanks for any advice,

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    • Novice
    • ★★

    Walnut blasting is usually the way to go if you have severe carbon buildup on your valves.

    With direct injection you can’t use regular cleaners that you pour into your gas tank. There are products that will work without resorting to walnut blasting.

    Berryman make a product designed for direct injection engines, Berrman 2611.  They also have a kit, Berryman 2604, that includes mass airflow cleaner, throttle body cleaner, intake valve & combustion chamber cleaner, and complete fuel system cleaner for the gas tank.

    Berryman 2611 as periodic maintenance will probable prevent the need to walnut blast the Skyactiv G Mazda engine.

    I plan on using Berryman’s before my next oil change as preventive maintenance.

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    • Pro
    • ★★★★

    Hi Robert,

    I planned to tackle this myself.

    Harbor Freight also has a variety of innexpensive sandblaster products.

    However, It requires a good compressor with operating pressure: 90 PSI, Air consumption: 7 SCFM

    I have a corksport valve cleaning kit that attaches to cylinder head and vacuum.

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