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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:
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:
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.
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.
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.
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.
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.
The cost of your fuel injector replacement will depend on the make and model of your vehicle. Generally, replacing fuel injectors can cost anywhere from $800 to $1500 depending on the repairs and labor costs.
New fuel injector parts can cost anywhere between $600-$1200. To that, expect to pay about $200-$250 in labor charges.
However, note that you don’t always need to replace the fuel injector. Sometimes, your mechanic may simply recommend a thorough cleaning of the fuel injection system.
While you can drive with a faulty fuel injector for a limited amount of time, you really shouldn’t.
Eventually, a faulty fuel injector will cause incomplete fuel burn and severely affect the engine performance. A bad fuel injector can also potentially damage the car’s spark plugs and foul them. It can even lead to engine failure and cost you thousands in repair.
Let’s go through some frequently asked questions related to a fuel injector replacement, and their answers:
The fuel injector is an electronically controlled mechanical device that plays a key role in the combustion of the air-fuel mixture. As the name suggests, the fuel injector ‘injects’ the fuel into the engine to prepare the air-fuel mixture for combustion.
Here’s how it works:
Most fuel injectors are made to last for over a billion cycles. This would mean that most car owners never have to worry about getting new fuel injectors.
However, it’s possible to get a faulty fuel injector as driving conditions or vehicle type can influence its durability and lifespan.
As with most parts, the primary cause behind a faulty injector can be wear and tear. As the fuel injector gets old, it can get dirty and clogged around its valve cover and injector nozzle.
That said, there are a few factors that could cause premature fuel injector failure.
Fuel injector replacement can be a complicated process to perform on your own. So unless you have a good grasp of how these parts work, it’s best to leave the fuel injection replacement to professional mechanics.
That being said, here’s a general walkthrough for a fuel injector replacement:
An old injector doesn’t always need replacing. Sometimes, a thorough cleaning cycle can also restore it back to new.
So, here’s how you can clean a fuel injector:
Remember, if a DIY fuel injector cleanup is not your thing, always get a mechanic’s help.
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