Driving With Bad Fuel Injector

Driving With Bad Fuel Injector

“Always fuel your day with uplifting thoughts.”

If you own a personal vehicle then having a fuel injector is a necessity for you. whether it’s a car or a bike, a fuel injector always comes handy when we are dealing with automobiles, isn’t it?

Not only that but most people feel that their garage is incomplete without a set of fuel injectors and if you are one of them, you would know how it feels to have a bad fuel injector.

And we are here to discuss with you all the do’s and don’ts about driving with bad fuel injector and to instruct you on your fuel injector related problems and their solutions.

So, let’s quickly make you an expert in fuel injector’s business.

Driver’s Discussion

“Drop a gear and disappear”

You must drop the gear and disappear but not before making sure that your car is in good condition and your fuel injector is working properly.

But how to know the fuel injector is in bad condition? How to tell if the fuel injector has gone bad?

Let’s understand it here:

What happens when fuel injectors go bad?

Bad Fuel Injectors

A bad fuel injector doesn’t mean that it has stopped working. It still works but the way in which it completes its task is something to worry about.

When a fuel injector goes bad, it either inject too little fuel or too much and both the conditions are not good for your vehicle.

The faulty speed of fuel injector in engine’s cylinder can cause a rough engine idle.

We know what happens when fuel injector goes bad, but what are the signs of bad fuel injectors? Let’s get to know that.

Signs of fuel injectors going bad:

Signs of fuel injectors going bad
  1. Idling Gets Rough.
  2. Your Gas Mileage Tanks.
  3. The RPM Needle Starts to Dance.
  4. Your Car Won’t Start.

Also, another major change that will take place if your fuel injector has gone bad is a bad fuel injector sound.

If your car’s idle noise has changed and feels rougher, it can be a sign that the fuel injectors might not be working properly. Several faults can cause a rough idle noise but clogged injectors are one of the most common reasons for this.

While it might not seem a huge problem when a fuel injector goes bad do you know reader, a bad fuel injector cause misfire?

Yes, dirty or malfunctioning fuel injectors may cause your vehicle’s engine to misfire.

It happens because this problem makes the motor feel as though it is sending vibrations through the car. Such misfires can take place when a fuel injector problem mixes up with the delicate balance between fuel and air entering the engine.

We have learnt so much about what happens when a fuel injector goes bad. Now its time to dig in deeper and understand some more symptoms related to the fuel injector problem.

Signs and Symptoms

“Study the symptoms to cure the problem.”

Here are some symptoms related to the same issue that you should know about to have a complete knowledge on fuel injectors.

Have a look!

Bad injector symptoms diesel as well as clogged fuel injector symptoms

Here are the most common symptoms of clogged and faulty diesel fuel injectors.

  1. Trouble in starting the vehicle
  2. Uneven idling
  3. Misfire
  4. Smell of fuel
  5. Dirty emissions
  6. Increased fuel consumption and poor miles per gallon.
  7. The RPM Needle Starts to Dance.
  8. When the engine is running Black smoke coming out of the tail pipe.

While you might be wondering how can al these symptoms be same? The answer is that whether it’s bad diesel injector, clogged fuel injector or even spider injector symptoms, all of them given out the same signs and you must find out on your own or take a help from a professional to see what is the exact problem behind these signs and then get it fixed.

More Information, Less Assumptions

“Information is Power!”

After discussing all kinds of fuel injector problems and its symptoms to detect the problem we must not miss the most crucial information to complete the fuel injector knowledge.

And that information is how to replace the fuel injector and how much to replace fuel injector.

And this is what we have got for you.

If you are not an expert in changing the fuel injector, don’t do it yourself. You must take expert help or take your car to the workshop and get the injector replaced that the only ‘safe way’ to replace the fuel injector.

Depending upon the make and model of your car, if you go to a workshop to get your fuel injector replaced, the average cost will be about $800 to $1,450 for a full replacement.

But if you have the knowledge to do the replacement yourself, the parts will cost you around $600 to $1200, while the labour cost is only about $200 to $250 which will be your saving.

Also, the fuel injectors on your car will last between 50,000 and 100,000 miles on an average.

The length of time that how long do fuel injectors last has a lot to do with the type of gas that you use in your car and how often the various other fuel filters are changed.

And now you are fully aware about all kinds of fuel injector problem and the cost of it’s replacement.


The sounds made by your car are not something to ignore. If its giving our some unusual signs, you must check and see what’s the root cause of the problem and get it resolved.

And in case it’s the problem of a faulty fuel injector, you have already gained full knowledge on what to do.

READ MORE : Symptoms of Bad Body Control Module

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