Foxwell JT400 GDI/EFI/FSI Fuel Injector Cleaner Machine – 4-Cylinder Heated Ultrasonic Tester
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FOXWELL JT400 GDI/EFI/FSI Car Fuel Injector Cleaner Machine 4-Cylinders Ultrasonic Injector Cleaning Fuel Injector Tester Tools
FOXWELL JT400 Fuel Injector Cleaner and Tester, GDI Injector Cleaning Machine, EFI FSI Injector Tester, Ultrasonic Fuel Injector Cleaner, 4-Cylinder Injector Cleaning Tool, Petrol Injector Testing Machine, Fuel Injection Tester, Automotive Fuel System Cleaning, Injector Leak Test, Injector Flow Test, Atomization Test, Variable Speed Test, On-Vehicle Cleaning
The FOXWELL JT400 Fuel Injector Cleaner and Tester is a professional machine designed to clean and test fuel injectors using ultrasonic cleaning technology and simulated engine operating conditions. Suitable for many petrol injector systems, including GDI, EFI and FSI, it supports injector resistance, leakage, uniformity, spray pattern and fuel injection testing. With automatic operation, a digital colour display, adjustable time, speed and pressure settings, and a built-in database, the JT400 helps automotive workshops assess injector performance and carry out fuel system cleaning.
Advanced ultrasonic fuel injector cleaning Equipped with ultrasonic cleaning, the FOXWELL JT400 effectively removes deposits from fuel injectors, ensuring optimal engine performance and fuel efficiency.
Digital color display for real-time monitoring Featuring a digital color screen, the machine provides clear, real-time feedback on cleaning and testing parameters for precise diagnostics.
One-click injector quality detection The one-click detection function instantly evaluates fuel injector quality, simplifying diagnostics and reducing testing time significantly.
Adjustable time, speed, and pressure settings With real-time adjustable time, speed, and pressure, the JT400 allows customized cleaning and testing for various injector types and conditions.
Automatic mode with built-in database The automatic mode eliminates manual operation, while the built-in database supports quick access to injector specifications and test protocols.
Supports electromagnetic fuel injectors Designed to support electromagnetic fuel injectors, the JT400 is compatible with a wide range of GDI/EFI/FSI engine systems for comprehensive testing.
Multilingual interface and global shipping With support for multiple languages including English, Spanish, German, and Russian, and shipped from Australia, Germany, UK, USA, and more, this device ensures global accessibility.
- Support multiple languages
- Chinese, Spanish, English, Portuguese, Russian, German
- Function 1
Digital display color screen - Function 2
Fuel injector detection function - Function 3
Ultrasonic cleaning - Function 4
Atomization test - Function 5
Uniform testing - Function 6
Sealing test - Function 7
Fuel injection test - Function 8
Automatic testing - Function 9
Variable speed test - Function 10
Time, speed, and pressure are adjustable in real time - Function 11
One-click detection of fuel injector quality - Function 12
Automatic mode, no manual operation required - Function 13
Language adjustable - Function 14
Built-in database - Function 15
Support electromagnetic fuel injector
Due to the fact that the device has two specifications: 110V and 220V, which are not supported for universal use, please note the specifications you need in the order or contact us directly when purchasing the product, otherwise, it will affect your use of the product
Support multiple languages
Chinese, Spanish, English, Portuguese, Russian, German
TIPS:
1. Welcome to Foxwell Official Store on AliExpress. Buy Foxwell, Choose Official Store. Enjoy Excellent After-sales Service .
2. We have inventory in our US and Russian warehouses. Once you purchase it, we will ship it to you through our local warehouse
3. For EU buyers,Over € 150, Pls choose ship from China. We will send to you from Euro warehouse. Delivery time is 3-7 days.

NOTICE: TO EU customer, we will ship from overseas warehouse, fast delivery.
Foxwell JT400 Introduction
Thank you for purchasing the JT400 GDI Injector Cleaner & Tester with the technology of ultrasonic cleaning and fuel pressure control. This equipment is an advanced electromagnetically produced product, which can clean or test injectors by simulating engine working conditions. It can also perform cleaning on the injectors and fuel supply system of the vehicle
Notice: This product supports 99% of petrol injector cleaning and testing. However, for diesel injectors, it only supports cleaning and not testing.

Top Reasons to Choose Foxwell JT400 4-cylinder Fuel Injector Cleaner & Tester
- [ 100w Ultrasonic Cleaning ]: Start the machine, and press the key to model 8. It can perform ultrasonic cleaning on single or multiple injectors simultaneously, which can thoroughly eliminate blockages on the injector accessories and internal components.
- [ Automatic Control/Real-time Monitoring ]: Microcomputer automatic control and digital display technology: the cleaning and detection process can be automatically controlled, and the main status parameters can be monitored in real time
- [ 100w Ultrasonic Cleaning ]: Start the machine, and press the key to model 8. It can perform ultrasonic cleaning on single or multiple injectors simultaneously, which can thoroughly eliminate blockages on the injector accessories and internal components.
- [ Automatic Control/Real-time Monitoring ]: Microcomputer automatic control and digital display technology: the cleaning and detection process can be automatically controlled, and the main status parameters can be monitored in real time
- [1L Ultrasonic Cleaning Tank + 3L Built-in Fuel Tank]: The FOXWELL JT400 fuel injector cleaner tester weighs only 12kg, lightweight and easy to move within your repair shop. The 1L ultrasonic cleaning tank allows batch cleaning of all injectors at a time to boost work efficiency. Meanwhile, the independent 3L enclosed fuel tank stores test fluid to realize cyclic oil supply for injector spray effect, flow rate and leak tightness detection.
- [ Multi Voltage Selection ]: Foxwell JT400 Fuel Injector 4-cylinder Cleaner and Tester designs with various types of voltage output (12V, 70V & 120V) to be selected to adapt to different types of injector testing.
- [Various Parts equipped ]: It is equipped with a variety of injector accessories for different needs.
- [Environmentally Friendly& Widely Used]: The used cleaning fluid and testing fluid can be easily recovered. Support most of the automobiles and motorcycles in the market. Applicable voltage is compatible with 110V or 220V.
- [ 2 Years Warranty ]: For damage caused by non-human factors, Foxwell promises to resend parts for free within 5 years. For any needs, you are warmly welcomed to contact us and we will get back to you ASAP within 24 hours
- [ Multi Voltage Selection ]: Foxwell JT400 Fuel Injector 4-cylinder Cleaner and Tester designs with various types of voltage output (12V, 70V & 120V) to be selected to adapt to different types of injector testing.
- [Various Parts equipped ]: It is equipped with a variety of injector accessories for different needs.
- [Environmentally Friendly& Widely Used]: The used cleaning fluid and testing fluid can be easily recovered. Support most of the automobiles and motorcycles in the market. Applicable voltage is compatible with 110V or 220V.
- [ 2 Years Warranty ]: For damage caused by non-human factors, Foxwell promises to resend parts for free within 5 years. For any needs, you are warmly welcomed to contact us and we will get back to you ASAP within 24 hours
Foxwell JT400 Main Functions:
- INJECTOR TEST: Detect the solenoid injectors' resistance
- UNIFORMITY TEST: Inspect the fuel injection of each injector by observing its uniformity.
- SPRAYABILITY TEST: Inspect the atomization of each injector by observing.
- LEAKAGE TEST: Inspect the sealing conditions of the injector needle valve under system pressure to find out the injector with an oil droplet.
- INJECTION TEST: Inspect the injecting volume in 10 seconds meets the design specifications.
- AUTO MODE TEST: Inspect the injectors according to the established program 1 of the equipment
- VARIABLE SPEED TEST: Inspect the injectors in variable speed conditions
- ULTRASONIC TEST: Clean the carbon deposits inside the fuel injector through ultrasonic
- ON-VEHICLE CLEAN: Cleaning the engine fuel supply pipeline, injector, and combustion chamber with the machine does not require disassembling.
- SYSTEM: Set the language and unit of the device operating system, query device information, and restore device factory settings
- DATABASE: Querying the working pressure of various vehicle models' fuel systems
- HELP: Querying device fault code information

Foxwell JT400 Main Features
- ▶ The special structure design makes the disassembly and assembly of the fuel separator easier and greatly improves the work efficiency.
- ▶ With the resistance test of the injectors one by one, get to know the condition of the injectors.
- ▶ The ultrasonic cleaner is integrated into the machine, which makes the operation easier and more efficient.
- ▶ With the dedicated motherboard, it can support the full and long test of low-resistance fuel injectors, such as 1 ohm.
- ▶ The unique fuel circuit depressurization technology can make the machine automatically depressurize in the case of sudden shutdown, avoiding equipment damage or personal injury.
- ▶ The brightness of the screen and backlight, and the level of the buzzer can be manually set and saved.
- ▶ The product adopts fuel pressure adjustment and control technology by microcomputer, which can ensure stable fuel pressure and a wide adjustable range. It is applicable to vehicles equipped with a variety of petrol injection systems. Meanwhile, the automation of injectors’ cleaning and testing processes can be realized.
- ▶ Thanks to the adoption of microcomputer automatic control and digital display technologies, the cleaning and testing processes can be controlled automatically, and the parameters of the main status can be monitored in real-time.
- ▶ Adopting humanization design can make the system pressure fast restored to the default values.

TIPS
Ultrasonic Cleaning Operation:
1. Pour in the injector detergent and place the injectors in the ultrasonic cleaner tank.
2. Connect the pulse signal wire and select the ultrasonic cleaning function to start working.
Fuel Injector Testing Operation:
1. Pour in the test liquid, install the fuel injector in the fuel distributor, and fix the main unit body.
2. Test if the injector is leaking or blocked under different functions.
How to choose a test fluid?
The test fluid is used to test and judge whether the performance of the fuel injector is in good condition. It is a colorless and transparent liquid with no irritating odor, non-corrosive, and not easily emitted. Its function is to simulate various working states of the fuel injector as a medium. In order to achieve the best test effect, it is recommended that professional automotive injector test fluids be used. If it is not available locally, as an alternative, it's recommended that medical alcohol with an alcohol content of more than 75% can be used instead of the test fluid.
How to choose a cleaning fluid?
Cleaning fluid is used to clean deposits (such as carbon deposits) on fuel injectors, and it is usually highly corrosive and requires careful handling. To achieve optimal test results, we recommend using professional ultrasonic cleaning fluid for injectors. If it is unavailable locally, medical alcohol with an alcohol content above 75% can serve as an alternative, though the cleaning performance may be less satisfactory.

Working Conditions& Specifications:
Voltage:AC220V or 110V,
(customized) Main-unit Max Power:300W
Display: 4.0-inch LCD
Ultrasonic power:60W
Pulse range:0.5-25ms ,step 0.1ms
Simulated speed:100-9900rpm ,step100rpm
Resistance measuring precision: 0.1 ohm
Tank volume:3L
Oil pressure: 0~8 bar
Main unit size: 420X440X503mm
Ambient temperature:-10℃-+40℃
Package size: 460*490*555mm
Ambient Humidity:<85%
Ambient magnetic strength:<400A/m

Packing List:
- Main unit:1 set
- Ultrasonic cleaner cover:1 pcs
- Injector cleaning bracket:1 pcs
- Fuel distributor package:1 set
- 4-cylinder pulse signal cables set
- Pulse signal connection cable 1: 4 pcs
- Pulse signal connection cable 3: 4 pcs
- Pulse signal connection cable 4: 4 pcs
- Adaptor 1 for fuel top-supply injector: 4 pcs
- Coarse thread adaptor for fuel top-supply injector: 4 pcs
- Swiss thread adaptor for fuel top-supply injector: 4 pcs
- Hexangular stopper: 3 pcs
- Adjusting pole(H80): 1 pcs
- Knurled nut: 1 pcs
- Pressing screw: 1 pcs
- Adaptor for GDI injector(D16): 4 pcs
- Top Oil Supply Connector(D17.5): 4 pcs
- Toolbox: 1 pcs
- Oil outlet adapter: 1 pcs
- Power cable: 1 pcs
- O ring 9.72.65: 10 pcs
- User's manual: 1 pcs

Choose the FOXWELL JT400 Fuel Injector Cleaner and Tester for a versatile solution for ultrasonic injector cleaning, fuel injection testing and supported fuel system maintenance. Its automatic functions, adjustable testing parameters and multiple diagnostic modes make it a practical addition to automotive workshops. Please confirm your required 110V or 220V version and check injector compatibility before ordering.