Is it necessary to replace all four fuel injectors if one is broken?

[DeZoe]

It is not necessary to replace all four fuel injectors if one is broken; only the damaged fuel injector needs to be replaced. Below is some relevant information about fuel injectors: 1. Fuel injector cleaning cycle: Generally, it is recommended to clean them every 20,000 to 30,000 kilometers. For vehicles in good condition and using high-quality fuel, this interval can be extended to 40,000 to 60,000 kilometers. 2. Hazards of not cleaning fuel injectors for a long time: If fuel injectors are not cleaned for an extended period, clogging can become more severe, leading to poor fuel injection, improper spray angle and atomization, and causing the engine to perform poorly at idle, during acceleration, or under full load. This results in decreased engine power and increased fuel consumption.