1. Product Overview
The THINKCAR GDI 200 is an advanced fuel injector cleaner and tester designed for automotive professionals. It features enhanced ultrasonic cleaning and intelligent testing functions, supporting a wide range of injectors including standard, GDI, and Piezoelectric types (EFI, SFI, SPI, GDI, and electro-hydraulic injectors). This 6-cylinder unit allows for efficient simultaneous testing and cleaning of up to six injectors.
Key features include:
- Wide Application: Supports standard, GDI, and Piezoelectric injectors (EFI, SFI, SPI, GDI, electro-hydraulic).
- Enhanced Cleaning & Testing: Intelligent detection of injector performance (sealing, resistance, working voltage, sensitivity) with a 60W ultrasonic cleaning capacity and cooling fan.
- Automatic Cleaning & Testing: Automated cleaning, testing, and real-time parameter adjustment.
- 6-Cylinder High Efficiency: Capable of testing and cleaning up to 6 injectors simultaneously.
- Various Parts Equipped & Portable Drawer: Includes a flexible drawer for storing a variety of injector accessories.
- Multi-Voltage Selection: Offers various voltage outputs (12V, 70V, 90V, 120V, 150V, 180V) for different injector types.
- Automatic Injector Type Detection: Automatically identifies 12V or piezoelectric injectors, testing resistance and minimum pulse width for 12V, and operating voltage for piezoelectric types.

Figure 1: Front view of the THINKCAR GDI 200 Injector Cleaner and Tester.

Figure 2: The GDI 200 supports various fuel injector types including EFI, SFI, SPI, GDI, and electro-hydraulic injectors.

Figure 3: Convenient drawer design for storing accessories.
2. Component Identification
Familiarize yourself with the main components of the GDI 200 unit:

Figure 4: Labeled diagram of the GDI 200 components.
- Fuel port
- Pulse signal cable socket
- Compressed air connection port
- Ultrasonic cleaning tank
- Oil supply pipe
- Power switch
- Power socket (safety tube)
- Oil separator
- Test measuring cup
- Operating panel
- Accessories storage drawer
- Liquid level (oil tank drain port)
- Ultrasonic drain port
3. Setup
- Placement: Place the GDI 200 on a stable, level surface in a well-ventilated area.
- Power Connection: Connect the power cable to the power socket (7) and a suitable electrical outlet (AC220V~50/60Hz or AC110V~60HZ).
- Compressed Air: Connect a compressed air supply to the compressed air connection port (3). Ensure the air pressure is within the recommended working pressure of 3-8 bar.
- Fuel Supply: Connect the oil supply pipe (5) to the fuel port (1). Fill the oil tank with the appropriate test fluid.
- Ultrasonic Cleaning Tank: Fill the ultrasonic cleaning tank (4) with the recommended cleaning solution.
- Injector Installation: Install the injectors into the appropriate slots, ensuring secure connections for the pulse signal cables (2). The pulse signal lines are clearly labeled for easy identification.

Figure 5: Pulse signal lines are clearly labeled, and the unit features a large capacity cleaning tank and 6-cylinder test capability.
4. Operating Instructions
The GDI 200 features an intelligent control panel for easy operation. Refer to the diagram below for control panel layout and function icon descriptions.

Figure 6: LCD Intelligent Control Panel and Function Icon Descriptions.
Control Panel Overview:
- Display Screen: Shows current settings and test results.
- Oil Drain Key: Initiates oil draining.
- Pressure Relief Key: Releases system pressure.
- Direction Keys (Up, Down, Left, Right): Navigate through menus and adjust parameters.
- Cancel Key: Exits current operation or menu.
- Confirm Key: Confirms selection or starts operation.
- EXIT: Exits current mode.
- ENTER: Confirms selection or starts a function.
Function Icon Descriptions:
| Symbol | Function Name | Function Description |
|---|---|---|
| Uniformity Test | Determines the spray ability performance of each fuel injector by detecting its uniformity. | |
| Sprayability Test | Determines the spray ability performance of each fuel injector by detecting injector spray ability performance. | |
| Leakage Test | Leakage test to inspect the sealing conditions of the injector needle valve under system pressure and to find out if the injector is dripping. | |
| Injection Test | The injection volume test checks that the injection flow meets the manufacturer's standard or a specific specification. Deviations reflect worn or clogged injectors. | |
| Pulse Width Test | Tests the minimum pulse width of an injector by injecting through oil pressurized pulsating electrical signal detection. | |
| Auto Mode 1 Test | According to the preset testing program, automatically perform tests for atomization, uniformity, sealing, and fuel injection quantity. | |
| Auto Mode 2 Test | AUTO MODE 1 and mini-opening time. | |
| Ultrasonic Test | Clean the carbon deposits inside the fuel injector through ultrasonic. | |
| On-Vehicle Clean | Cleaning the engine with supply pipeline injector and combustion chamber with the pipeline does not require disassembly. | |
| 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. |
General Operation Steps:
- Turn on the power switch (6).
- Use the direction keys on the operating panel (10) to select the desired test or cleaning function.
- Follow the on-screen prompts to set parameters such as pulse width, RPM range, and voltage.
- Press the ENTER key to start the selected function.
- Monitor the test measuring cups (9) and the display screen for results.
- After testing/cleaning, use the Oil Drain Key to drain the test fluid.
- For ultrasonic cleaning, ensure injectors are placed in the ultrasonic cleaning tank (4) with appropriate solution.
Video 1: Demonstration of the THINKCAR GDI 200 Injector Cleaner and Tester in operation, showing the testing process and fluid levels.
5. Maintenance
- Draining Fluids: Regularly drain the test fluid from the oil tank via the liquid level (oil tank drain port) (12) and the cleaning solution from the ultrasonic cleaning tank via the ultrasonic drain port (13).
- Cleaning the Unit: Keep the exterior of the unit clean and free from dust and spills. Use a soft, dry cloth.
- Accessory Storage: Store all accessories in the accessories storage drawer (11) when not in use to prevent loss and damage.
- Fluid Replacement: Replace test fluids and cleaning solutions according to manufacturer recommendations to ensure optimal performance and prevent damage to injectors or the machine.
6. Troubleshooting
- Unit Not Powering On: Check the power cable connection and ensure the power switch (6) is in the 'ON' position. Verify the power outlet is functional.
- No Fluid Flow: Check the fuel supply connection and ensure there is sufficient test fluid in the tank. Verify the pump is operating.
- Inaccurate Test Results: Ensure injectors are properly installed and sealed. Verify the test fluid is clean and at the correct level. Check for proper air pressure supply.
- Ultrasonic Cleaning Not Working: Ensure the ultrasonic cleaning tank (4) is filled with the correct solution and the function is selected on the operating panel.
- Error Messages: If an error message appears on the display screen, consult the 'Help' function (refer to Figure 6) on the operating panel for specific fault code information.
7. Specifications
| Attribute | Value |
|---|---|
| Brand Name | THINKCAR |
| Model Number | GDI200 |
| Product Name | THINKCAR GDI 200 Fuel Injector Cleaner and Tester |
| Fuel Injectors Support | EFI, SFI, SPI, GDI, Piezoelectric Injectors |
| Pulse Width | 0.1~25ms, step: 0.1ms |
| Ultrasonic Cleaning Power | 60W |
| Oil Tank Capacity | 4L |
| Working Pressure | 3-8bar |
| Resistance Test Accuracy | 0.1Ω |
| Input Power | AC220V~50/60Hz Or AC110V~60HZ |
| Simulated RPM Range | 100~9900rpm |
| Packing Size | 460*490*555mm |
| DIY Supplies | Electrical |
| Origin | Mainland China, Guangdong |
| Color | Black |
| Material | Metal |
8. User Tips
- Model Verification: Ensure you are operating the THINKCAR GDI 200 model. Some promotional videos or older documentation might feature earlier versions like the GDI 100, which may have different specifications or features.
- Fluid Quality: Always use high-quality, recommended test fluids and cleaning solutions to prevent damage to the injectors and the machine.
- Regular Calibration: While not explicitly detailed, consider periodic calibration checks if available, or consult the manufacturer for recommended service intervals to maintain accuracy.
- Safety First: Always wear appropriate personal protective equipment (PPE) such as safety glasses and gloves when handling test fluids and operating the machine.
9. Warranty and Support
For warranty information, technical support, or service inquiries, please contact THINKCAR customer service or your authorized dealer. The manufacturer provides a service commitment to ensure product quality and customer satisfaction.
You may reach support via:
- WHATSAPP: +8617700267836
- Email: 2039728528@qq.com
- We.Chat: +86 17700267836





