After-sales Guide

Over time, the fuel injection system in cars accumulates impurities, especially in the fuel injectors, valves, and combustion chambers. Carbon deposits, dust, and soot can clog the fuel injectors, affect fuel injection efficiency, and cause automotive problems such as decreased performance, irregular idling, and fluctuating fuel efficiency.

A fuel injector cleaner and tester machine can help solve this issue and help the vehicle restore its optimal operating condition. This guide explains how the AUTOOL fuel injector cleaner kit can support cleaning, testing, troubleshooting, and after-sales maintenance.

Diagnosis 01

Do not ignore these symptoms

Dirty Injectors Common Symptoms

  • Engine stalls or idles erraticallyClogged injectors can trigger engine shaking, especially at idle and low speeds when the vibration is more pronounced.
  • Poor fuel consumptionUneven fuel injection and incomplete combustion will cause fuel consumption to rise, and the vehicle will require more fuel to maintain normal operation.
  • Abnormal tailpipe emissionsPoor fuel injection may cause unburned fuel to enter the exhaust system, leading to excessive tailpipe emissions and possibly even black or blue smoke.
  • UnderpoweredDue to dirty injectors and insufficient fuel supply, the vehicle will feel no power to accelerate and sluggish in response when accelerating.
Operation 01

Basic cleaning and testing workflow

A Complete Guide to Using AUTOOL Fuel Injector Cleaner Kit

  1. Step 1Before turning on the AUTOOL CT injector cleaning machine, clean the outside of the injector with a cleaning solution. Place the injector into the ultrasonic cleaning cylinder after the outside of the injector is free of dirt. Caution: the cleaning fluid level must not exceed the connection port of the pulse line.
  2. Step 2Turn on the ultrasonic system of the ultrasonic fuel injector cleaner and allow the ultrasonic energy to remove any particles that have built up inside the injector. After cleaning, recycle the remaining cleaning solution.
  3. Step 3Secure the injector to the main unit and test the injector for resistance, short circuit, and current with a fuel injector tester. Add the test solution to half of the glass tube.
  4. Step 4Perform leak test, spray pattern, and flow rate testing on the flow bench. Finally, return the injector to the flow bench and retest all functions.

Want to learn more about ultrasonic fuel injector cleaner models, operating procedures, or compatibility? First-time buyers can enjoy a 10% discount and a 3-year warranty.

Online support is available through AUTOOL.

Online Support

Troubleshooting

Common problems and solutions

Fuel Injection Tester Kit Common Problems and Solutions

1. Injector Test With No Pressure, No Spray?

  • Check if the testing fluid has been added to the designated level.
  • Apply continuous pressure and monitor the pressure gauge for any changes.
  • If there is pressure, check for loose injector connections.
  • Apply constant pressure and check for changes in pump current and voltage.
  • If the voltage shows normal and increases, it indicates pump failure.

Watch no pressure / no spray video

2. How to Troubleshoot a Problem That Will Not Turn On Properly?

  • Check that the fuse in the power outlet is intact.
  • If it is blown, replace it with a new 5A fuse.
  • Verify that the power adapter is supplying power to the other boards.
  • Normal input voltage should be 110V or 220V.
  • Normal output voltage should be 12V.

Watch boot failure video

3. What Cleaning Solution to Use for Cleaning?

Recommended to use a professional syringe ultrasonic cleaning fluid to clean the injector. Or use medical alcohol with an alcohol content of more than 75% instead of cleaning fluid, but the cleaning effect may not be good enough.

4. What Test Fluids to Use for Nozzle Inspection?

Recommended to use professional automotive injector test fluids. If it is not available locally, as an alternative, recommended that medical alcohol with an alcohol content of more than 75% be used instead of the test fluid.

When using the ultrasonic cleaning function, please add the transmitter carbon cleaning fluid before running the equipment. Do not add the cleaning fluid directly to open the equipment to run, as it will lead to ultrasonic motherboard damage.

Cleaning fluid warning

5. AUTOOL Injector Test Cleaner Does Not Drain the Glass Tube or Cannot Store the Tested Liquid

  • First, check whether the oil drain switch is in the right state, for example, whether it has been twisted or not reset.
  • Then check whether you have added any strong corrosive test liquid, especially make sure you have not added a strong cleaning agent because strong corrosive liquid will cause the internal pipe seals to change.
  • Do not add strong corrosive liquids. If you do, remove the cover under the glass tube to see if the internal gasket is deformed or swollen.
  • If there is still a problem, the affected part needs replacement.

Watch glass cylinder troubleshooting video

6. Injector Detection Cleaning Machine Ultrasonic Does Not Work

There are two situations. If you are using the machine for a period and it stops working, this situation is normal. AUTOOL products have high temperature protection; when the monitoring temperature reaches 70 degrees or more, the machine will self-protect and stop working. It needs to cool down before running again.

However, if it does not work the first time, check the wiring of the ultrasonic motherboard to see if there is any detachment or loosening. Re-plug it and try to run it again.

Watch ultrasonic troubleshooting video

7. AUTOOL Injector Testing and Cleaning Machine Test Function Has No Pressure or No Oil Injection

First, check whether the test liquid level is in the specified position, then press the pressurize button continuously to see whether there is any change in the pressure gauge. If there is pressure, check whether the injector pulse line connection is reliable.

If the pressure gauge shows pressure but still does not inject, check whether the injector pulse line connection is reliable. If the injector is not connected or does not inject, assist in removing the fuel pump to test whether it is normal.

8. Attachment: CT500 Backflush Tutorial

Watch CT500 Reverse Flushing Tutorial

Warranty

Three-Year Warranty, Lifetime Maintenance

For damage caused by non-human factors, AUTOOL promises to resend parts for free within 3 years. For any needs, feel free to contact us. We will respond within 24 hours.

Online Support

FAQ

AUTOOL Fuel Injector Cleaner Kit FAQs

AUTOOL Fuel Injector Cleaner Kit FAQs

Do AUTOOL CT200 and AUTOOL CT150 Support High-pressure Direct Injection GDI Injectors?

These two products do not support GDI injector detection at the moment. If you have purchased a CT200 or CT150, it is recommended that you pair them with a CT60 to support the realization of the GDI function. Currently, only AUTOOL CT400 and CT500 can support GDI cleaning and testing.

Does AUTOOL Injector Inspection Cleaner Support Diesel Injectors?

No. The AUTOOL CT200 and AUTOOL CT150 do not support diesel fuel injectors, but the ultrasonic function can support diesel fuel injector cleaning.

Can I Use the AUTOOL Injector Cleaner to Test Only One Injector and Turn Off the Others?

Yes, it is possible to do so. It is equipped with plugs to block the other fuel distributor ports if you need to test one injector.

Does the AUTOOL CT160 Support Reverse Flushing?

The CT160 does not support the function of reverse flushing for the time being. Only the CT150, CT200 and CT400 support this function. The advantages of the CT160 are the ultrasonic heating function and the large size of the cleaning cylinder.

What Is the Maximum Speed of the AUTOOL Injector Nozzle Inspection Cleaner During the Test?

Real-time simulation of automobile engine injector nozzles is feasible across varying speeds. You can set the maximum speed of the AUTOOL Injector Tester to 0-7500 rpm.

Summary

Summary

If you value engine health, want to save on repair costs, or plan to start an engine cleaning business, a fuel injector cleaner and tester machine is a highly cost-effective investment.

Want to learn more? Contact us to enjoy a 10% discount for new customers and a 3-year warranty.

Contact

Contact AUTOOL for Fuel Injector Cleaner Support

Contact AUTOOL for product selection, operating procedures, compatibility, after-sales support, or new customer offers.

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