What Are the Effects of Fuel Injector Failure on a Car?
2 Answers
The effects of fuel injector failure on a car include the following: Causing needle valve and nozzle blockage or sticking: This directly affects the fuel injection volume, leading to an overly lean air-fuel mixture, and in severe cases, difficulty starting the engine. Causing an overly lean air-fuel mixture: Since carbon deposits absorb fuel vapor, they indirectly reduce the fuel injection volume. The most noticeable effect is a decrease in the car's power, difficulty in raising the engine speed, and even stalling during sudden acceleration. In more severe cases of carbon buildup, starting difficulties and stalling at idle may occur. Causing an overly rich air-fuel mixture: Once carbon deposits become saturated, they may lead to fuel dripping, resulting in an overly rich air-fuel mixture. This incomplete combustion can cause black smoke from the exhaust, popping sounds from the tailpipe, and inevitably increased fuel consumption. In more severe cases, it may lead to cylinder flooding, causing engine knocking or failure to start.
Last time my car had a problem, the engine shook like an earthquake, and it felt noticeably weak when accelerating on the highway, with a clear lack of power. After inspection, it turned out the fuel injectors were clogged, causing uneven fuel spray and unstable engine operation. Fuel consumption also skyrocketed—previously, a full tank could go 500 km, but now it barely reaches 400 km, clearly burning more fuel. If left unrepaired for a long time, emissions would exceed standards, causing issues during annual inspections and harming the environment. Additionally, the engine might stall at idle, making parking and starting especially troublesome—sometimes even struggling to start, which is a real hassle. Fuel injector problems could also affect other components like the catalytic converter, leading to higher repair costs in the future. It's best not to delay and get them cleaned or replaced at a professional shop promptly.
