What Are the Common Issues After Cleaning Fuel Injectors?

1 Answers
StIsabella
07/29/25 5:07pm
Common issues after cleaning fuel injectors include increased fuel consumption and higher idle speed. The working principle of fuel injector spraying is as follows: high-pressure fuel is pumped into the fuel injector supply port, creating high pressure inside the injector body that acts on the conical surface of the injector nozzle. When the fuel pressure exceeds the set value, the injector valve core opens, and high-pressure fuel is sprayed from the nozzle holes in a mist form into the engine cylinder for combustion, driving the piston's reciprocating motion. Common fuel injector faults and their solutions are: 1. Clogged nozzle holes: Use chromium oxide applied to a flat plate for grinding; if the cylindrical surface of the needle valve is significantly worn, it should be replaced promptly. 2. Poor sealing: Apply chromium oxide or toothpaste to the sealing band at the needle valve end. 3. Piston wear: Replace the piston.
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