What Are The Symptoms Of A Failing Fuel Injector?
A broken or faulty injector, when ignored, can cause some serious damage to your car. It could lead to many problems, including overheating, poor performance, and eventual engine failure.
To avoid that, here’s how you can identify a bad injector:
1. Reduced Engine Performance
A faulty injector will affect your car’s fuel system. As a result, you will find a noticeable drop in engine performance.
This could manifest itself in several ways, including:
- Rough idling
- Engine stalling
- Engine surge
- Periodic vibrations or ‘hiccups’
- Engine misfires
- Difficulty in acceleration
While your car may not display all of these symptoms, it’s best to take note of its performance if you suspect a bad fuel injector.
2. Check Engine Light Turns On
An illuminated check engine light can signal a faulty fuel injector, among other things.
So, how do we know for sure?
For one thing, you can monitor for other symptoms of a bad injector along with the CEL. However, you should consult your mechanic to be sure. They’ll use an OBD2 scanner to identify the issue.
3. Fuel Leak And Odor
A cracked or old injector can cause a fuel leak. This could be due to damage from wear and tear or old age. Whatever the case, it can result in gasoline leaking from the main body instead of reaching the injector nozzle.
If you physically inspect the fuel injector, you’ll notice traces of gasoline on its exterior body or near the fuel rail. It will also reflect a strong gasoline smell due to the leak.
A damaged old injector could also leak too much fuel into the cylinder, cause incomplete combustion, and foul the spark plugs.
4. Reduced Fuel Efficiency
When the fuel injector fails to provide the engine with the sufficient amount of fuel it needs, the engine acts up in response. It will continue to put more pressure on the injector for more fuel injection than it needs.
This affects the car’s fuel efficiency and consumption as the engine demands more fuel than the ECU thinks it needs.
5. A Failed Emissions Test
A broken or leaking fuel injector can cause insufficient or incomplete fuel combustion. Naturally, this results in increased emissions by the car.
In some cases, a fuel injector leak can also end up burning the catalytic converter. So a failed emissions test could potentially indicate a faulty fuel injector.