What to Do If the Fuel Injector Fails?
2 Answers
If the fuel injector fails, it should be disassembled and repaired. Below are the relevant details: 1. If the fuel injector fails, it should be disassembled and repaired. If the damage is severe, it should be replaced. After replacement, the injection pressure should be adjusted to 22-0.5Pa, ensuring good spray performance without dripping. Regularly clean the fuel filter to prevent excessive impurities in the fuel from clogging the injector. 2. To diagnose engine injector faults, run the engine at idle and perform a fuel cut-off test on each cylinder sequentially. When the fuel supply to a specific cylinder's injector is stopped, observe the engine's operation and sound. If the exhaust stops emitting black smoke after the fuel cut-off and the engine speed changes, it indicates a fault with that cylinder's injector. Once the engine injector fault is accurately diagnosed, disassemble the injector and test it on an injector calibration bench.
A faulty fuel injector can be really troublesome, causing sudden jerks, lack of power during acceleration, or even failure to start. I recommend turning off the engine immediately and not forcing it to run to prevent cylinder scoring or damage to other components. After stopping, check if it's just a clog—some fuel system cleaners added to the tank might restore fuel flow; if that doesn’t work, a replacement is needed. Replacement costs range from a few hundred to over a thousand, depending on the car model and brand—don’t skimp at small workshops to avoid worse issues. For regular maintenance, pay attention to fuel quality—use good fuel to reduce impurity buildup and schedule fuel system cleaning every 20,000 km for safety. Carrying a simple OBD scanner to read trouble codes can easily confirm the issue, saving unnecessary trips to the shop. Safe driving comes first—delaying repairs can lead to chain reactions, costing more time and money.
