How to clean your car's fuel injectors

Table of contents:

How to clean your car's fuel injectors
How to clean your car's fuel injectors
Anonim

Clogged fuel injectors can hamper vehicle performance, lowering its strength and mileage. Keep your engine running smoothly by cleaning the fuel injectors about once a year. Fuel Injector Cleaning Kits are simple to use and very inexpensive. Taking care of the vehicle will pay off in the long run!

Steps

Part 1 of 2: Using a Fuel Injector Cleaning Kit

Clean Fuel Injectors Step 1
Clean Fuel Injectors Step 1

Step 1. Purchase a fuel injector cleaning kit with PEA (nitrogen-based detergent) cleaning fluid

Find a cleaning kit that is suitable for your type of vehicle. Each kit should come with a can of fuel injector cleaner and a hose that connects to the injector and the fuel rail. For best results, opt for a cleaning fluid that contains polyetheramine (PEA), which will dissolve thick carbon deposits more effectively than any other ingredient.

  • Most fuel injector cleaning kits can be used for any type of vehicle, but you should read the package or ask a dealer to be sure.
  • You can buy a cleaning kit at an auto store or online.
  • Complete kits typically cost less than $ 100 each.
  • You can also purchase the cleaning kit items separately.
  • Cleaners containing polyisobutylene (PIB) will prevent new deposits but will not remove existing ones.
  • Cleaners containing polyisobutylene amine (PIBA) will remove and prevent build-up, but are gentler and less effective than PEA cleaning fluids.
Clean Fuel Injectors Step 2
Clean Fuel Injectors Step 2

Step 2. Check the vehicle's engine design to locate the fuel injectors

Different engine types have different designs, so fuel injectors can be difficult to find. Take a look in your vehicle manual to determine where the fuel injectors are located. You can also search the vehicle online to find this information.

The fuel injectors will be located under the hood of the car

Clean Fuel Injectors Step 3
Clean Fuel Injectors Step 3

Step 3. Disconnect the fuel pump from the injectors

Prepare the fuel pump, which should be located on the side of the engine. Carefully remove the fuel injectors to separate them from the pump. Once you've removed them, connect the fuel return line to the fuel pump so the gasoline that's inside flows back into the tank while you clean the injectors.

  • You can also insert a U-shaped tube to channel the gasoline into the tank.
  • Follow the specific vehicle instructions in the vehicle manual if you are unsure of how to properly disconnect the fuel injectors.
Clean Fuel Injectors Step 4
Clean Fuel Injectors Step 4

Step 4. Disconnect the vacuum line from the pressure regulator if you have one

Locate the fuel pressure regulator if your vehicle has one and look for the connected vacuum line. Support the line just above where the regulator connects. Carefully remove it to disconnect it.

  • Check your vehicle's manual to see if you have to do this step.
  • Typically the regulator will be located just behind the fuel injectors.
Clean Fuel Injectors Step 5
Clean Fuel Injectors Step 5

Step 5. Attach the cleaning kit to the fuel port

Locate the fuel port, which should connect to the fuel rail on the engine. Follow the detailed instructions in the cleaning kit on how to connect the hose and fitting to the port. This will vary between kits, but you should focus on making sure the fitting connects properly to the hose and port.

Make sure the injectors are not exposed to the fuel as the cleaner is flammable

Clean Fuel Injectors Step 6
Clean Fuel Injectors Step 6

Step 6. Remove the fuel tank cap to prevent pressure build-up

The cleaner will remove debris and grime by using a blast of pressure to inject a cleaning solvent into the fuel injectors. Make sure to remove the cap from the fuel tank before you start cleaning. This will prevent excessive pressure from building up, which could cause an explosion.

Clean Fuel Injectors Step 7
Clean Fuel Injectors Step 7

Step 7. Turn the vehicle over to allow the cleaning fluid to enter the injectors

Verify that the fuel pump is off. Start the engine and let it run. The motor will stop running on its own once the cleaning fluid has been used up.

It usually takes 5-10 minutes for you to cycle through the injectors and get used to it

Clean Fuel Injectors Step 8
Clean Fuel Injectors Step 8

Step 8. Remove the cleaning kit and reconnect the pump and injectors

Remove the hose and fittings from the fuel port. Reconnect the fuel pump power supply and the pressure regulator vacuum hose. Put the fuel cap back in place.

Clean Fuel Injectors Step 9
Clean Fuel Injectors Step 9

Step 9. Start the vehicle again to make sure the fuel injectors are working

Test the vehicle to see if you have reconnected everything correctly when starting the engine. Listen for any abnormal sounds, which may indicate a problem. Drive the vehicle a short distance to make sure it runs smoothly.

If you followed the procedure correctly and notice abnormal sounds, contact a professional auto mechanic

Part 2 of 2: Keeping Your Fuel Injectors Clean

Clean Fuel Injectors Step 10
Clean Fuel Injectors Step 10

Step 1. Clean the fuel injectors about once a year

Using a fuel injector cleaning kit can help prevent harmful deposit buildup. If you clean less regularly, carbonaceous deposits can build up and harden, hampering the vehicle's operation. Post an annual reminder on your phone or computer, or schedule this annual cleaning with a similar task, such as an annual vehicle oil change.

If you don't use your vehicle often, you can clean the fuel injectors every 24,140 kilometers (15,000 miles)

Clean Fuel Injectors Step 11
Clean Fuel Injectors Step 11

Step 2. Replace the fuel injectors if they show signs of malfunction

Sometimes the fuel injectors may need to be totally replaced to ensure the vehicle is operating properly. If you notice signs that the fuel injectors may be malfunctioning, take the vehicle to a mechanic to have it checked as soon as possible. These signs can include:

  • cylinders fail
  • the "check engine" light comes on frequently
  • the vehicle stalls or does not start with a full tank of gasoline
  • smoke
Clean Fuel Injectors Step 12
Clean Fuel Injectors Step 12

Step 3. Get a professional fuel injector cleaning if you can't do it yourself

If you can't do annual cleanings on your own, you don't miss the whole process. He takes the vehicle in to have the fuel injectors professionally cleaned every year as needed. Contact your local auto repair shop for price estimates before deciding to take the car in for cleaning.

It will be expensive, but it will save you engine problems that could cost you more in the future

Advice

  • Keep a fire extinguisher nearby in case of an accident.
  • Cleaning the fuel injectors can lead to significant fuel savings.
  • Avoid getting cleaning fluid onto the exterior of the vehicle, as this could damage the paint.
  • A severely clogged fuel injector may not allow enough cleaner to pass through during a cleaning routine to do it properly. Additional cleaning may be needed to clear clogged deposits.

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