Under What Circumstances Should Fuel Injectors Be Cleaned?
2 Answers
The following situations require cleaning the fuel injectors: 1. When the fuel injectors are clogged, fuel injection is not smooth. 2. When there is carbon buildup and adhesive deposits in the injector gap, preventing the designed fuel injection volume or atomization effect, the fuel injectors need to be cleaned. Below is some relevant information about fuel injectors: 1. A fuel injector is essentially a normally closed valve. When the electromagnetic coil is energized, it generates suction, lifting the needle valve to open the injection hole. Fuel is sprayed at high speed through the annular gap between the needle valve head and the injection hole, forming a mist that facilitates complete combustion. 2. Generally, fuel injectors need to be cleaned when a car has traveled approximately 30,000 to 50,000 kilometers. However, the condition of the fuel injectors is also related to factors such as the car model and external environment, so this mileage is not always accurate.
When I was repairing my car before, I noticed that the car would shake inexplicably when accelerating, feeling particularly rough. This is when the fuel injectors need cleaning. With excessive carbon buildup, the fuel injectors are prone to clogging, especially in older cars that have been driven tens of thousands of kilometers or after using contaminated gasoline. At idle, the engine makes a lot of noise, and fuel consumption also increases significantly—burning several extra liters per hundred kilometers is not uncommon. Don’t hesitate at this point; clean them promptly to prevent the problem from worsening and damaging the engine. For regular maintenance, I recommend checking every 30,000 kilometers. The cost of cleaning is not high, just a couple hundred yuan. Additionally, leaving the car unused for long periods can cause gasoline to solidify and the fuel injectors to clog. If the exhaust emits a strange odor and an inspection station identifies the issue, timely cleaning of the fuel injectors is necessary to avoid fines for non-compliance. Simply put, any abnormalities should be addressed promptly.
