How to perform fuel injection service on a dodge caliber

Written by tim petruccio
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How to perform fuel injection service on a dodge caliber
Performing a fuel injection cleaning service can improve your Calibre's peformance and gas mileage. (new car engine with red trim image by Raxxillion from

The Dodge Caliber has been available since the 2006 model year. The Caliber was upgraded in 2007 to offer an SRT-4 style, and offers the option of a 2.4 litre turbo charged engine. The standard Caliber has the option of a 1.8-litre, a 2.0-litre, or a standard 2.4-litre, 4-cylinder engine. The fuel injection cleaner process is identical, regardless of the engine size of your Caliber, as all of the engines share a similar parts layout.

Skill level:

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Things you need

  • 3/8-inch drive ratchet and socket set
  • Flathead screwdriver
  • 1 can aerosol fuel injector cleaner
  • 1 bottle fuel-injector cleaner additive
  • Large cotton swap

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  1. 1

    Turn off the vehicle's engine. Open the bonnet and remove the lid on the air filter box by hand. Remove the air intake tube from the mass airflow sensor with a 3/8-inch drive ratchet and socket. The mass airflow sensor is the metal box that sits in the air intake tube, between the air filter box and the engine.

  2. 2

    Spray a small portion of the aerosol fuel injector cleaner onto a large cotton swab. Swipe the cotton swab inside of the mass airflow to clean the dirt and debris off of the airflow. Cleaning the airflow by hand will allow for better air intake performance and extend the life of the electronic portion of the mass airflow sensor.

  3. 3

    Start the Calibre's engine and let it run. Locate the throttle body control, which is on the back side of the engine, just before the air intake enters the engine. Move the throttle body lever by hand to rev the engine.

  4. 4

    Shake well and spray the remaining contents of the aerosol cleaner into the exposed end of the mass airflow. Increase the engine's rpm with your other hand to prevent stalling. If the engine stalls, restart the engine and raise the rpm higher using the throttle body linkage under the hood. Continue until the aerosol can is completely empty. Keep the engine's rpm high for at least 40 seconds to 1 minute after the aerosol can is empty to burn off the residual cleaner in your engine.

  5. 5

    Turn off the Calibre's engine. Open the fuel-filler door on the side of the car. Remove the fuel-filler cap, where you put gasoline into your car. Empty the contents of the fuel injector cleaner additive into your gas tank. This process will allow the injector cleaner to coagulate with your fuel and clean everything from the fuel pump through your fuel lines.

  6. 6

    Reinstall the air intake tube onto the mass airflow sensor, using a 3/8-inch drive ratchet and socket. Check your air filter to make sure it is clean before reinstalling the air filter box lid. Install the air filter box lid only if the air filter does not need replaced.

Tips and warnings

  • Performing an upper engine or fuel injector cleaning service on your car once a year can greatly enhance your car's performance and fuel mileage. The cleaning service can prolong the life of other parts of your engine such as the spark plugs by cleaning the tips of the plugs as it passes through the combustion chamber.
  • Changing your air filter after performing a fuel injector cleaning service is a great way to keep your fuel injectors cleaner, as well as your mass airflow sensor. A dirty air filter will immediately allow particulates of debris and dirt to cling to the mass airflow tube and will foul the newly cleaned injectors.
  • This project deals with flammable liquids and gasses. Fuel injector cleaner in aerosol and liquid form are both extremely flammable. Keep this job away from sparks, open flames, static electrical charges and lit cigarettes. Failure to adhere to this warning could cause property damage, vehicle fire, spontaneous explosion, personal injury or even death.

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