Does Fuel Injector Cleaner Work?

Does Fuel Injector Cleaner WorkDoes fuel injector cleaner work?  That is one of the most highly debate questions concerning modern car maintenance practices.  Some people say you should use fuel injector cleaner in every tank of gas you purchase.  Some say every other tank, some say every oil change, while some may argue once per year is enough.  There are also still a few that argue that it isn’t necessary at all.  Today many mechanics and small lube shops will often offer a “fuel system treatment” or “fuel injector flush” as one of their options any time you have your vehicle in the shop.  So who is right?

Today we hope to dispel any myths about fuel injector cleaner and help you understand why and when it’s a good idea to use it.  Our discussion today will cover fuel injector cleaner, fuel system cleaner and fuel system treatment as for the most part they’re all the same product with different names.

No matter what grade of gasoline you purchase or where you buy it from it is not going to be perfectly pure.  Some stations do indeed sell better gas than others, so it is important to remember who you are buying from.  For more information on top tier gasoline retailers you can checkout this informational page listing top tier gasoline retailers.  Even if you purchase the highest octane with all the detergents and fancy additives from the best station in town you are still getting a little more than you pay for.  These contaminates in gasoline are why almost all vehicles on the road today are still equipped with fuel filters.  Over time these contaminates can build up in your fuel system causing problems.  Just like having hard water in your home, you might not notice the problem at first, but every so often you’ll have to clean the hard water deposits from around your sink and shower drains.  Based on the average mileage of most Americans per year, and the average fuel mileage of vehicles sold in the US today, you will use over 570 gallons of gasoline this year.  That much gasoline can leave a surprising amount of contaminants in your fuel system.  Some of the contamination will accumulate in the bottom of your fuel tank, in the fuel lines, and around your fuel pressure regulator.  The real problem will come from the deposits forming on your fuel injectors.

Does Fuel Injector Cleaner WorkYour fuel injectors are designed to deliver a high pressure mist of fuel into your intake air creating the explosive mixture it takes to power your vehicle.  As these deposits build up on your fuel injectors, they will start to malfunction.  Even if the injector isn’t completely clogged, any obstruction of fuel flow will change the characteristics of the fuel mist into your engine.  Fuel that is poorly mixed with the intake air due to a poorly flowing injector is more difficult to ignite and burns less efficiently than well mixed fuel.  This is the main problem caused by a dirty fuel injector.  This difficult to ignite fuel mixture is what causes the poor fuel mileage you are experiencing as well as harder starts, less power, higher harmful emissions and a poorly idling vehicle.

To return your fuel injectors to their maximum performance and restore your car to running like new, you need to dissolve these deposits that have built up on your fuel injector.  BlueDevil Fuel System Cleaner is specifically designed to dissolve the deposits that have formed on your injectors and in other areas of your fuel system to return your fuel system to peak efficiency.  BlueDevil Fuel System Cleaner is specifically designed to improve your fuel mileage, lower your emissions, and maximize your engine’s performance without damaging any sensors or other components.  Today’s fuels have come a long way in there purity and do come with some additives so we recommend using BlueDevil Fuel System Cleaner every 3000 miles to make sure your fuel system stays clean and deposit free.

You can purchase BlueDevil Fuel System Cleaner directly from BlueDevil .

You can also purchase BlueDevil Fuel System Cleaner from our partnering local auto parts stores like:

  • AutoZone
  • Advance Auto Parts
  • Bennett Auto Supply
  • CarQuest Auto parts
  • NAPA Auto Parts
  • O’Reilly Auto Parts
  • Pep Boys
  • Fast Track
  • Bumper to Bumper Auto Parts Specialists
  • S&E Quick Lube Distributer
  • DYK Automotive

Pictures provided by:

Fuel Injector – By Wikipedianprolific – Licensed by Creative Commons Share Alike 3.0 Original Link
irty Fuel Injector – By Virginia Auto Service – Licensed by Creative Commons Share Alike 3.0 Original Link

62 responses to “Does Fuel Injector Cleaner Work?

  1. please help me. my car has a fuel problem it keeps shutting of while I’m driving. what is causing that.. the car itself always does a shocking action then a noise like it popping. Eventually it cuts and I start it bk.

    1. Deborah,

      Thanks for your question about your car. If your car starts up every time quickly after it shuts off then it sounds like your problem is either with your fuel pump going bad, a clogged fuel filter or a bad pressure regulator. The abruptness you described and the popping noise makes us lean towards a bad fuel pump or clogged fuel filter as low fuel pressure would cause a lean condition in your engine which could cause bucking or backfiring.

      Thanks again for your question!
      -BD Auto Pro

  2. Hi. My turbo is not kicking in until I hit by 2500 rpm. Started happening a week ago. Someone told me that this would/could solve it. Is that right?
    Thanks in advance

    1. James-

      The turbo can sometimes act up if your exhaust is restricted or plugged. If that is the case then BlueDevil Fuel MD Fuel System Cleaner ( would be a great solution for cleaning the system and get the turbo functioning properly once again. If it is failing due to an exhaust leak or some other factor then you may need to look into replacing the appropriate parts.



    1. Louis-

      Based on your description, we would recommend using the BlueDevil Fuel MD Fuel System Cleaner, found here on our website: . The product will remove fuel deposits while increasing vehicle performance. The product will also imrove gas mileage, fuel efficiency, vehicle start up and will restore consistent engine idle while lowering fuel octane requirements. Feel free to contact our technical support team at 888-863-0426 with any other questions.

      Thank you!


    1. Kelly-

      Dirty injectors will restrict the amount of fuel that is sprayed into the engine with every pulse of the injector resulting in a leaner-than-normal fuel mixture. This, in turn, can cause lean misfire, hesitation, poor performance and an increase in hydrocarbon emissions. Problems with the coolant sensor or oxygen sensor also can affect fuel delivery. A coolant sensor that always reads cold will prevent the engine from going into closed loop resulting in a rich fuel mixture and poor fuel economy. A dead oxygen sensor can have the same effect. So too, can a contaminated or sluggish O2 sensor. Feel free to contact our technical support line at 888-863-0426 with any other questions.

      Thank you!


  3. hello, my car has been giving me a few problems lately. When I drive at slow speeds, (like 15 mph) my engine shuts off. I’ll put it in park and restart it and it’s just fine. I also believe it is using more gas than it has before, and when on the highway and going up hill it is harder for it to maintain it’s speed, so could a cleaner help this problem? It does not shut off when I drive at normal or high speeds at all.

  4. Hie
    I have been having problems with my car recently. Sometimes when i stop at a red robot the vehicle will just refuse to pull up when its time to go even when the accelerator is flat footed. Sometimes it just hesitates to pull even when m travelling. I have changed the fuel pump, put new plugs but all that has not worked so far. Could the injector cleaner help here

  5. Hi, can you please let me know if “surging” when accelerating up a hill or on a highway could be caused by a clogged injector – which could be solved by your product? Essentially around town everything seems fine but if I give the car harder acceleration in 4th/5th gear, the car seems to accelerate in an uneven manner.

    Also, I’m noticing the exhaust gases as being white.

  6. I have a 1997 GMC K2500 that fires up fine, just changed the fuel filter yesterday and is still idleing hard. Putting in low rpms but still has get up and go. New problem, do you think a bad fuel injector is the problem? Or maybe just injector cleaner?
    Thanks again

  7. Hi my car is showing exhaust emession light, i don’t know what is the problem because there is no sign or bad thing that i can feel when am driving.

  8. My 1995 rodeo v6 4×4 moving slow then jerk to go up hill or slowly change gear then drop back down only going 15mph. Also black smoke from exhaust pipe.what is this please. ?shall i use blue devil fuel injections?

  9. Just took my 2016 Elantra for an oil change it only has 30k miles but they recommend my throttle body be cleaned. Would Blue Devil help clean the throttle body?

    1. Richard-

      No, a fuel system cleaner would not help to clean your throttle body. The proper way for cleaning the throttle body would be to remove it and manually cleaning it using a degreaser specifically designed for fuel system components.

      Thank you!


    2. Richard-

      Thank you for asking about your Hyundai Elantra. Based on your description, you would be a great candidate for the BlueDevil Fuel System Cleaner ( 30,000 miles is a little early in a vehicle’s life to require a throttle body cleaning, so this sounds like it may have been recommended more as a preventative measure. Feel free to contact our technical support line at 888-863-0426 with any other questions.

      Thank you!


  10. I have a question my car is hard for starting and when I push the gas pedal the sound from the engine is coming up like knocking sound , so this is came from fuel injectors ?
    Thanks in advance for your response ?

    1. Daniel-

      The knocking sound you are hearing does not necessarily indicate an issue with your fuel injectors. A knocking sound from the engine can also indicate that there is water in the oil. We recommend changing your oil and seeing if the problem persists. If so, you may want to bring the vehicle in to a certified ASE mechanic for a proper diagnosis.

      Thank you!


  11. I have a 1700 ctdi astravan.
    I have had a new Turbo, and air pressure valve fitted.
    When i start up,she runs fine, until warmed up.
    When i try to accelerate, the vehicle holds back as if i am about to run out of fuel, and have no acceleration at all ?
    When i sit in Neutral and hold the revs at 3000-3500, the engine speeds up and slows down, making the rev counter go up and down?

    1. Paul,

      Thanks for your question about your Astra Van. Based on your description of the problem, it does sound like you’ve got a fuel delivery issue. You could check your injection pump, especially the relief valve if it has one to make sure it’s functioning properly. The other possibility is to make sure the air pressure valve is allowing the turbo to spool up. If it’s stuck open your turbocharger won’t create boost limiting the power output of your engine.

      Thanks again for your question!
      -BD Auto Pro

  12. I have a I.8 Toyota Corolla, im facing problem with the fuel economy, i am having a fuel economy of 3.3liter car, another problem is with the rpm dropout, sometimes it drops rpm and comes back to its original position.kindly give your precious advice.

  13. Interesting article, I noticed something odd with my 09 Jetta. Its a 2.5 5 cylinder gas car, has about 124K miles. Noticed whenever I start the car, there’s like a murmur coming from the muffler (like its going up 500 rpm and going down 500 rpm every 10 seconds). And when i give it throttle past 50% percent, it starts to sputter and lose power (oddly). Can I get some guidance?

    Thanks in advance!

    1. Jorhe-

      Thank you for asking about your VW Jetta. Based on your description, we recommend using the BlueDevil Fuel System Cleaner ( A fuel system filled with deposits and other restrictors could definitely be causing the fluctuation in rpm’s you are experiencing. The BlueDevil Fuel System Cleaner will remove fuel deposits while increasing vehicle performance. The product improves gas mileage, fuel efficiency, vehicle start up, & will restore a consistent engine idle while lowering fuel octane requirements.

      Thank you!


  14. Hallo i added fuel injector cleaner to my fuel but before I could drive I discovered a problem and am not able to drive my car now. Will the injector cleaner in my fuel cause a problem in the tank ? Because the car is not able to drive now.

  15. My Toyota Etios 1.5 2014 model sometimes jerks when i drive at a low gear, vibrates when i brake and goes off when i leave the gas pedal at a stop sign. Will the injector cleaner help some of this problems?

    1. Richard-

      Please contact our technical support line at 888-863-0426 so that we can get a better understanding of the vehicle’s condition and be able to make any appropriate recommendations.

      Thank you!


  16. Engine cranks but often does not start – then I turn key to on and wait 5 seconds and engine starts right up every time. Is this a symptom that A Blue Devil product can help me with? ie. clogged or dirty fuel pump?

    1. Mike-

      Please contact our technical support line at 888-863-0426 so that we can get a little better idea of the vehicle’s condition and be able to make any appropriate recommendations.

      Thank you!


  17. i have 99 olds alero. a few months ago, i had driven home from work, about 12 miles (city driving), and stopped at a convenience store near my house. when i started the car, the it felt weak and was idling at only 500 rpms. i drove home, but each time i took my foot off the gas, the rpms dropped sharply back down to 500. a few hours later, it would not start. then, the next day in the afternoon it started fine. now, this past weekend, i stopped to get an oil change. after the oil change i started it up and was idling at 500 rpms again. i was able to drive it home, but at any stop is idled at about 500 rpms, though never stalled. since parking it at home, i haven’t been able to start it at all without giving it some gas, and as soon as i take my foot off the pedal, the engine dies.
    the fuel pump sounds fine when key is put in the on position, and i just replaced the fuel filter, but that did not fix the problem. does this sound like a fuel injector problem, and if so, does it sound too late to use a cleaner?

    1. Ben-

      Thank you for asking about your Oldsmobile Alero. Unfortunately, it is possible that the fuel injectors may be dirty or clogged in your case. Based on your description, it sounds like it would be a good idea to use the BlueDevil Fuel System Cleaner. BlueDevil Fuel System Cleaner will remove fuel deposits, while increasing vehicle performance. The product will also restore a consistent engine idle while lowering fuel octane requirements.

      Thank you!


  18. i have a mercedes clk350 when accelerate from idle the car hesitate at 1800 rpm. does broken swirl flap cause this problem? because i discover that my swirl flap is broken.

    1. Georges-

      Thank you for asking about your Mercedes CLK 359. Yes, damaged swirl flaps could cause the hesitation you are experiencing when the vehicle accelerates. The swirl flap is closed while the vehicle is idling and will gradually open up as you start to accelerate the vehicle. The swirl flaps ensure that the air entering the cylinder is turbulent enough for proper fuel-air mixture. Replacing the damaged swirl flap should correct the hesitation.

      Hope this helps!


  19. thank you for your help i change the swirl flap position and the hesitation has dissapear by 90%. i will change the broken part as soon as possible. I also have a question about the fuel injector cleaner interval between use of the cleaner?

    thanks in advance

  20. My car makes a whirring and rattling sound, hard idle(I can feel it) and does not like to take corners, and speed up at all when accelerating and sometimes I have to let of the gas and try again to accelerate. It has gotten to the point it will sound like it’s accelerating fast but not actually move at all. Does this sound like a fuel pump/injector or transmitting problems? I have heard both!

  21. Hi I have fiat punto diesel 1.3lt multijet ..the problem is when i start the engine everytime its rough for first 5 to7 minutes rpm needles shake up and down and also when my aircon is on and car goes stop on redlight i hear rattling noise from engine or ac when i accelerate then it becomes fine .it comes when i stop the car or car goes very slow ac put more load on engine on slow but everything is good on high speed engine as well as aircon no noise and problem .

    1. Andy-

      Thank you for asking about your Fiat Punto. Please contact our technical support line at 888-863-0426 so that we can get a little more information on the vehicle’s condition and discuss the possible use of the BlueDevil Fuel System Cleaner.

      Thank you!


  22. Hi, I have a 2009 Ford Flex. As I’m driving, if I ease of the gas and then give a little gas between 40-60mph I get a little sputtering. Now before I go checking/replacing spark plugs or coils, do you think this fuel injector fluid could solve this issue?

    1. Larry-

      Thank you for asking about your Ford Flex. Based on your description, it is possible that fuel deposits are causing the sputter at higher rpm’s. If that is the case, the BlueDevil Fuel System Cleaner would work great for removing these fuel deposits and returning the engine to maximum efficiency.

      Thank you!


  23. I have a 2016 kia sorento recently I was driving home with my ac on everything was fine until I came to a stop sign and my car turned off and when I turned it back on it starting shaking and shut off I took it to the dealership and they didn’t do much because the check engine light was off they swapped the coils and spark plugs and said that should fix the issue its done it again since I was told it could be the fuel injector would the cleaner help the issue?

    1. Orlando,

      Thanks for your question about your 2016 Kia Sorento. Without a check engine light, it will be more difficult to find out what the problem is. If swapping the coils fixed things for a short time, you may have another coil that has gone bad. It is also possible that clogged fuel injectors are causing your engine to run rough so we would recommend using BlueDevil Fuel System Cleaner to clean out your fuel injectors and get things running smoothly again.

      Thanks again for your question!
      -BD Auto Pro

  24. I have a 2005 Chevy Impala. I used another brand of injector cleaner (I had not heard if yours at the time) and my check engine light came on. Also the gas reader, both dash and digital are no longer working. None of these things were wrong before the cleaner was put into the car.

  25. Hi, When my tank is full or high it runs really nice and smooth, as soon as it hits a 1/4 of a tank it start sputtering and jumping all over the and loses power till I top it back up and then goes back to normal again. when I last had the fuel filter changed it was quite dirty with dirt, thought that would of fix it by changing filter but it hasn’t, any idea what it could be? Only happens when I hit 1/4 of the tank

  26. My check engine light is on. 0710 code or something. 2001 Toyota Celica. First, the mechanic said it was a loose hose.

    Then he replaced the oxygen sensor. Now he says it might be the fuel injectors. Sometimes there is a delay in starting the car.

    Do you think fuel injector cleaner will solve the problem?

    1. Stacey-

      Thank you for asking about your Toyota Celica. Based on your description, we recommend using the BlueDevil Complete Fuel System Cleaner. The product will improve vehicle start up and restore a consistent engine idle.

      Thank you!


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