Can the fuel injectors of a direct injection engine be cleaned?

1 Answers
LeCooper
07/30/25 5:45am
Direct injection engine fuel injectors can be cleaned. If the direct injection fuel injectors are leaking or clogged, they need to be cleaned and maintained in a timely manner, generally focusing on maintenance with cleaning as a supplementary measure. Methods for cleaning direct injection fuel injectors: 1. If the fuel injector is clogged, a needle can be used to unclog it, followed by thorough cleaning; 2. If the large flat surface of the needle valve body does not make good contact with the main flat surface of the fuel injector, or if the cylindrical surface of the needle valve is significantly worn; 3. If the large flat surface of the needle valve body does not make good contact with the main flat surface of the fuel injector, chromium oxide can be applied on a flat plate for figure-8 grinding; 4. If the cylindrical surface of the needle valve is significantly worn, the needle valve pair should be replaced in pairs.
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