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What are the symptoms of a damaged fuel injector?

1 Answers

LeJulian

07/30/25 4:57am

The symptoms of a damaged fuel injector include: 1. Valve hole blockage leading to inability to inject fuel or poor atomization; 2. Needle valve malfunction causing flow rate errors or post-injection leakage; 3. Connector open circuit or short circuit resulting in failure to inject fuel; 4. Engine fails to start; 5. Unstable engine operation; 6. Severe black smoke from the exhaust. The main functions of a fuel injector are: 1. Increasing fuel pressure: raising the injection pressure to 10MPa to 20MPa; 2. Controlling injection timing: injecting and stopping fuel at specified times; 3. Controlling fuel injection quantity: adjusting the amount of fuel injected based on the diesel engine's operating conditions to regulate the engine's speed and power.

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