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AUTOOL CT500 GDI/EFI/FSI Fuel Injector Cleaning Machine & Tester with Pulse Tests
Original price was: US$769.00.US$629.00Current price is: US$629.00.
Key Features
- Advanced Injector Response Testing
- Standard and GDI Multi-Voltage Coverage
- Six-Injector Side-by-Side Results
- Color Display and Pressure Control
- Advanced Injector Response Testing: Compare injector response and atomization with pulse, wide-pulse, and continuous-injection modes across a broader range of conditions.
- Standard and GDI Multi-Voltage Coverage: Clean and test compatible standard, GDI, EFI, and long-body FSI injectors with selectable 12 V, 70 V, and 120 V drive modes.
- Six-Injector Side-by-Side Results: Compare leakage, spray pattern, and relative flow across up to six injectors before and after cleaning.
- Color Display and Pressure Control: Set and monitor pressure, pulse width, test time, and operating mode from one control panel for repeatable comparisons.
- 3-Year Warranty Main unit 3 years · Accessories 1 year
- 90-Day Returns Eligible returns within 90 days
- Official Store Genuine products · Direct support
AUTOOL CT500 · 6-injector multi-voltage cleaner and tester
Multi-Voltage Fuel Injector Cleaning with Advanced Test Modes
AUTOOL CT500 is a six-injector, multi-voltage fuel injector cleaner and tester for compatible GDI, EFI, FSI, and standard gasoline injectors. It supports spray-pattern, flow, leak, pulse, and simulated-condition tests. It combines 15 cleaning and testing functions, 12V / 70V / 120V injector driving modes, a color display, adjustable system pressure, 70 W ultrasonic cleaning, dual fluid-drain control, and organized accessory drawer storage.
- GDI / EFI / FSI
- 6-Cylinder Testing
- 12V / 70V / 120V
- Advanced Test Modes
Core service capabilities
Key Features
CT500 tests up to six compatible injectors and provides 15 cleaning and test modes, 70 W ultrasonic cleaning, a color display, electronic pressure control, dual drains, and accessory storage.
Wide GDI / EFI / FSI Injector Support
CT500 supports cleaning and testing compatible GDI, EFI, FSI, and standard gasoline injectors, including direct-injection applications used by Mercedes-Benz, BMW, Audi, Porsche, and Ford.
12V / 70V / 120V Voltage Modes
Three injector-drive selections help match different standard and GDI injector requirements.
15 Cleaning And Testing Functions
CT500 includes ultrasonic cleaning, reverse flushing, optional cleaning without injector removal, spray-pattern and flow checks, simulated operating conditions, leak tests, pulse injection, wide-pulse injection, and continuous injection.
70W Ultrasonic Cleaning
Ultrasonic power up to 70 W, with a cooling fan and thermal protection, helps remove carbon deposits and impurities.
6-Cylinder Cleaning And Testing
Six injectors can be cleaned and tested together for side-by-side spray, flow, and condition comparison.
Advanced Pulse Test Modes
Pulse injection, wide-pulse injection, and continuous injection provide broader observation of injector response and atomization behavior.
Color Display And Pressure Control
The color display, multifunction panel, and electronic pressure regulation make function selection, parameter adjustment, and observation clear.
Dual Drain And Fluid Recovery
Two control valves help discharge liquid and recover test fluid for repeated workshop use.
Drawer Storage
The labeled drawer helps organize injector adapters, plugs, cables, and related components for routine workshop use.
3 Years Warranty Support
Main unit: 3-year warranty. Standard accessories: 1-year warranty. Warranty Policy.
Step-by-step injector service workflow
Step-by-Step Workflow
Use CT500 to clean and test standard and GDI-family injectors by selecting the correct adapter, fluid, voltage, pressure, and function for the injector type.
01
Step 01
Identify Injector And Select Adapter
Confirm whether the injector is standard, GDI, EFI, or FSI, then select the correct connector, adapter, and required drive voltage.
02
Step 02
Add Cleaning Fluid And Run Ultrasonic Injector Cleaning
Fill the 1000 mL tank with professional ultrasonic cleaning or engine carbon cleaning fluid before starting the 70 W ultrasonic function. CT500 does not heat the tank.
03
Step 03
Mount Injectors And Plug Unused Positions
Install up to six injectors securely. When testing one injector, plug the other five positions.
04
Step 04
Add Test Fluid
Fill the testing circuit with professional injector test fluid or the stated 75%+ medical alcohol alternative. Do not use gasoline or cleaning solution as test fluid.
05
Step 05
Select Voltage And Parameters
Select 12V, 70V, or 120V according to the injector. If uncertain, start at 12V and increase gradually. Set pressure, simulated speed, pulse width, pulse count, time, and function as needed.
06
Step 06
Run Cleaning And Testing Functions
Run the required spray-pattern, flow, leak, simulated-speed, pulse, reverse-flush, or optional cleaning-without-removal modes.
07
Step 07
Compare Results And Recover Fluid
Compare all injectors under identical settings, repeat the same tests after cleaning, and use the dual drain controls to discharge or recover fluids.
Result interpretation
How To Read Test Results
Interpret CT500 results only after the correct injector adapter, 12V / 70V / 120V drive setting, test fluid, pressure, speed, pulse width, pulse count, time, and test mode have been selected. Follow each row in sequence so the observed result leads to a defined adjustment, cleaning, retest, diagnosis, or replacement action.
| What You Observe | What It May Mean | Recommended Next Step |
|---|---|---|
| Drips while closed | Contamination, valve-seat wear, or a sealing fault | Clean and re-test; refer or replace if leakage remains |
| One measuring cylinder fills much less | Restriction, installation leak, channel issue, or injector fault | Check pressure and sealing, swap channels, then clean and repeat |
| Deflected, split, coarse, or dripping spray | Deposit, nozzle damage, or internal mechanical issue | Clean and re-test; use specialist service if unchanged |
| Difference becomes smaller after cleaning | A recoverable restriction may have been reduced | Record the result, renew applicable seals, and verify on the vehicle |
| No measurable improvement | The injector may already be clean or have electrical / mechanical damage | Stop repeated cleaning and continue diagnosis, specialist testing, or replacement |
| Bench results look balanced but the vehicle still misfires | The root cause may be outside the injector system | Check ignition, compression, intake leakage, fuel pressure, and control signals |
Important: Keep adapter, voltage, pressure, speed, pulse width, pulse count, time, fluid, and mode identical when comparing injectors or before-and-after results. If the injector voltage is uncertain, start at 12V and increase gradually. Do not leave an injector connected to an incorrect voltage for an extended time. Confirm final limits with the injector specification, service procedure, or CT500 manual.
Fluid, compatibility, and operating limits
Safety & Compatibility
Review injector compatibility, diesel limitations, fluid selection, ultrasonic cleaning, voltage selection, and single-injector setup before using CT500.
Diesel Injectors: Cleaning Only
Diesel injectors can be ultrasonically cleaned, but CT500 does not support diesel injector testing.
Use Test Fluid For Testing
Use professional colorless, odorless, non-corrosive fuel injector test fluid for performance testing and simulated operating conditions.
Use Cleaning Fluid For Ultrasonic Cleaning
Use professional fuel injector cleaning fluid formulated for ultrasonic tanks or engine carbon cleaning fluid to remove carbon deposits and impurities.
75%+ Medical Alcohol Alternative
If professional fluid is unavailable, 75%+ medical alcohol may be used as an alternative, although cleaning effectiveness may be reduced and flammability precautions still apply.
Do Not Mix Fluids Or Dry-Run
Do not use cleaning liquid in the testing circuit, do not mix cleaning and testing fluids, and do not run ultrasonic cleaning without fluid in the tank.
Select Voltage Carefully
For GDI injectors, start from 12V and increase to 70V or 120V only when needed. Avoid using an incorrect voltage for an extended time.
Compare models
Compare AUTOOL Injector Tester Models
Use the comparison chart and summary below to decide whether CT500 is enough for your injector workflow, or whether CT450, FN606, or FN608 is a better fit.
Compare models
Choose one or more models. CT500 is selected by default.
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| Specification | Model 1AUTOOL CT150 | Model 2AUTOOL CT160 | Model 3AUTOOL CT200 | Model 4AUTOOL CT400 | Model 5AUTOOL CT450 | Model 6AUTOOL CT500 | Model 7AUTOOL FN606 | Model 8AUTOOL FN608 |
|---|---|---|---|---|---|---|---|---|
| Core capacity and control | ||||||||
| Power input | 110/220V | 110/220V | 110/220V | 110/220V | 110/220V | 110/220V | 110/220V | 110/220V |
| Cleaning and test modes | 3 Cleaning Functions 9 Testing Functions | 3 Cleaning Functions 9 Testing Functions | 3 Cleaning Functions 9 Testing Functions | 3 Cleaning Functions 9 Testing Functions | 3 Cleaning Functions 10 Testing Functions | 3 Cleaning Functions 12 Testing Functions | 3 Cleaning Functions 12 Testing Functions | 3 Cleaning Functions 12 Testing Functions |
| Measuring-tube capacity | 110ml | 100ml | 110ml | 110ml | 110ml | 110ml | 110ml | 110ml |
| Ultrasonic tank capacity | 1000ml | 2000ml | 1700ml | 2000ml | 2000ml | 1000ml | 550ml | 550ml |
| Pulse-width range | 0-20ms | 0-20ms | 0-20ms | 0-20ms | 0-20ms | 0-40ms Step Size 0.1ms | 0-40ms Step Size 0.1ms | 0-40ms Step Size 0.1ms |
| Time setting range | 0-10min | 0-10min | 0-10min | 0-10min | 0-10min | 0-10min | 0-10min | 0-10min |
| Simulated speed range | 0-7500rpm | 0-7500rpm | 0-7500rpm | 0-7500rpm | 0-7500rpm | 0-7500rpm | 0-7500rpm | 0-7500rpm |
| Ultrasonic cleaning power | 70w | 70w | 70w | 70w | 70w | 70w | 70w | 70w |
| Built-in pump | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 2 |
| Adapter types | 3 Types | 5 Types | 3 Types | 9 Types | 9 Types | 9 Types | 9 Types | 9 Types |
| Injectors tested at once | 4 Fuel Injectors | 4 Fuel Injectors | 6 Fuel Injectors | 6 Fuel Injectors | 6 Fuel Injectors | 6 Fuel Injectors | 6 Fuel Injectors | 8 Fuel Injectors |
| Injector coverage and settings | ||||||||
| Supported injector types | Standard Fuel Injector | Standard Fuel Injector | Standard Fuel Injector | Standard Fuel Injector GDI, EFI, FSI Long Fuel Injectors | Standard Fuel Injector GDI, EFI, FSI Long Fuel Injectors | Standard Fuel Injector GDI, EFI, FSI Long Fuel Injectors | Standard Fuel Injector GDI, EFI, FSI Long Fuel Injectors | Standard Fuel Injector GDI, EFI, FSI Long Fuel Injectors |
| Injector drive-voltage settings | ×Not included | ×Not included | ×Not included | 12V 70V 120V | 12V 70V 120V | 12V 70V 120V | 12V 12V-70V 120V-180V | 12V 12V-70V 120V-180V |
| Menu language options | ×Not included | ×Not included | ×Not included | ×Not included | ×Not included | 2 Types (Chinese, English) | 2 Types (Chinese, English) | 2 Types (Chinese, English) |
| Workshop features | ||||||||
| Heated ultrasonic cleaning | ×Not included | ✓Included · 45℃ | ×Not included | ×Not included | ✓Included · 50℃ | ×Not included | ✓Included · 50℃ | ✓Included · 50℃ |
| Pressure gauge | ✓Included | ✓Included | ✓Included | ✓Included | ✓Included | ✓Included | ✓Included | ✓Included |
| Display | ✓Included | ✓Included | ✓Included | ✓Included | ✓Included | ✓Included | ✓Included | ✓Included |
| Test-fluid level indicator | ✓Included | ✓Included | ✓Included | ✓Included | ✓Included | ✓Included | ✓Included | ✓Included |
| Splash guard | ×Not included | ×Not included | ×Not included | ×Not included | ×Not included | ✓Included | ✓Included | ✓Included |
| Operating-condition simulations | ✓Included | ✓Included | ✓Included | ✓Included | ✓Included | ✓Included | ✓Included | ✓Included |
| Fluid drain/recovery valve | ✓Included | ✓Included | ✓Included | ✓Included | ✓Included | ✓Included | ✓Included | ✓Included |
| Storage drawer | ×Not included | ×Not included | ×Not included | ✓Included | ✓Included | ✓Included | ✓Included | ✓Included |
| Low-impedance injector support | ✓Included | ✓Included | ✓Included | ✓Included | ✓Included | ✓Included | ✓Included | ✓Included |
| Detachable Cleaning Tank | ×Not included | ×Not included | ×Not included | ×Not included | ×Not included | ×Not included | ✓Included | ✓Included |
| Fuel pumps | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 2 |
Model guide
Use this overview to identify the models you want to compare in detail.
AUTOOL CT150
Four-position standard gasoline injector cleaning and visual testing without ultrasonic cleaning-fluid heating.
AUTOOL CT160
Standard 12 V gasoline injector service with a 2,000 mL ultrasonic tank and heating up to 45 °C.
AUTOOL CT200
Standard 12 V gasoline injector service with six test positions, a 1,700 mL ultrasonic tank, and 3 cleaning / 9 testing functions.
AUTOOL CT400
Six-position service for standard, GDI, EFI, and FSI long injectors with 12 V / 70 V / 120 V selection, a 2,000 mL tank, and a storage drawer.
AUTOOL CT450
Six-position GDI / EFI / FSI service with cleaning-fluid heating up to 50 °C and 10 testing functions.
AUTOOL CT500
Six-position advanced control with 0–40 ms pulse adjustment in 0.1 ms steps, Chinese / English settings, an oil baffle, and 12 testing functions for standard and direct-injection service.
AUTOOL FN606
Combines GDI support, heating up to 50 °C, extended injector-voltage ranges, a detachable 550 mL tank, advanced pulse control, and one fuel pump.
AUTOOL FN608
Extends the detachable heated platform to eight injectors and two fuel pumps while retaining advanced pulse and GDI voltage control.
Manual and support
Manual And Downloads
Download the CT500 manual for operation, setup, injector voltage selection, cleaning and testing functions, accessories, fluid use, and safe-use guidance.
AUTOOL CT500 User Manual
Open the PDF manual for CT500 setup, function selection, injector testing, fluid rules, and accessory use.
What Is In The Box
What Is In The Box
The packing list image shows the CT500 main unit and included accessories. Final package contents should follow the package image and selected product configuration.
- Main UnitAUTOOL CT500 fuel injector cleaner and tester
- Injector adaptersMultiple connector sizes and adapter types
- Signal CablesPulse signal cable sets shown for different injector connector types
- Single-injector testingFive plugs are included to seal the unused test positions when testing one injector.
- AccessoriesRails, fittings, O-rings, tray, funnel, valve, and related parts
- DocumentationUser manual included
Frequently asked questions
Questions And Answers
These answers cover injector compatibility, diesel injector limitations, test fluid, cleaning fluid, voltage selection, heating differences, model comparison, packing list, and warranty support.
Can Diesel Injectors Be Cleaned And Tested With CT500?
Diesel injectors can be cleaned with the AUTOOL injector cleaning tester, but CT500 does not support diesel injector testing.
What Injector Types Does CT500 Support?
CT500 supports cleaning and testing GDI, EFI, FSI, and standard gasoline injectors. It provides 12V, 70V, and 120V voltage selections for different injector driving needs.
How Many Injectors Can CT500 Test At Once?
CT500 supports simultaneous cleaning and testing of up to six injectors. When testing only one injector, plug the other five unused test positions with the included plugs.
Does CT500 Have A Heating Function?
No. CT500 does not support heating. CT450, FN606, and FN608 support heated ultrasonic cleaning up to 50°C, depending on model.
How Should I Choose Test Fluid?
Use professional automotive injector test fluid to evaluate injector performance. Use approved test fluid to reproduce test conditions consistently without exposing the circuit to unapproved liquids. If unavailable, 75%+ medical alcohol may be used as an alternative.
How Should I Choose Cleaning Fluid?
Use professional ultrasonic injector cleaning fluid or professional engine carbon cleaning fluid to remove carbon deposits. If professional cleaning fluid is unavailable, 75%+ medical alcohol may be used, but cleaning performance may be reduced.
Can I Use Cleaning Liquid To Test Injectors?
No. Cleaning solution can be corrosive and may damage internal machine parts, corrode rubber components, and cause leaks. Use test fluid for testing and cleaning fluid only for cleaning.
How Do I Set Test Parameters?
Special parameter setup is not usually required. Select the function number and set the test time. During detection, CT500 allows adjustment of parameters such as simulated speed, pulse width, pulse count, and working time.
How Do I Select The Correct Voltage For GDI Injectors?
Select the voltage according to the injector requirement. If uncertain, start from 12V, then gradually increase to 70V and 120V until the injector functions correctly.
Will The Wrong Voltage Damage GDI Injectors?
Short-term wrong voltage may not cause immediate damage, but prolonged excessive voltage can be harmful. If the injector does not work correctly, adjust to the proper voltage promptly and avoid long testing at the wrong voltage.
What Is The Difference Between CT500 And FN608?
FN608 supports 8 cylinders, while CT500 supports 6 cylinders. FN608 also has a 50°C heating cleaning tank, wider voltage ranges of 12V, 12-70V, and 120-180V, an independently usable cleaning tank, and two independent fuel pumps. CT500 uses 12V, 70V, and 120V modes, has an integrated cleaning tank, and uses one fuel pump.
What Is The Difference Between FN608 And FN606?
FN608 supports testing for 8 cylinders, while FN606 supports testing for 6 cylinders. FN608 is equipped with two independent fuel pumps for left and right fuel rails, so one side can continue working if the other pump has an issue. FN606 uses a single fuel pump.
What Is The Difference Between CT400, CT450, And CT500?
Compared with CT400, CT450 adds the pulse injection test and a 50°C ultrasonic heating function. Compared with CT450, CT500 further adds wide pulse injection test and continuous injection test, but CT500 does not have ultrasonic heating.
What Is The Difference Between CT200 And CT400?
CT200 supports 12V standard fuel injectors. CT400 supports both 12V standard injectors and GDI injectors, and it adds a drawer for injector adapters and accessories.
How Should I Choose Between CT150, CT160, CT200, And GDI Models?
CT150 and CT160 are 4-cylinder gasoline injector machines. CT160 adds ultrasonic heating. CT200 adds two additional test positions for testing up to six injectors at once while keeping similar basic functions. If you need GDI high-pressure injector testing, choose CT400, CT450, CT500, FN606, or FN608.
What Accessories Are Included With CT500?
Refer to the Packing List image for the final package contents. The package shows the CT500 main unit, injector adapters, signal cables, fittings, O-rings, tray, funnel, valve, user manual, and other accessories. Five plugs are included for single-injector testing.
How Long Is The Warranty?
AUTOOL covers the main unit with a 3-year limited warranty and standard bundled accessories with a 1-year limited warranty from the date of receipt. See the Warranty Policy for coverage, exclusions, claim requirements, and any product-specific terms.
Customer Reviews
Leave A Review
Dal Kalra (verified owner) –
Super people
Super people
Nikos Voglis (verified owner) –
Great!
I have received the CT500, the logistics was very fast, the quality is very good, I love AUTOOL products. The after-sales service is also very prompt.
garage (verified owner) –
Very well built
Very well built, package contains all the necessary equipment to work immediately. It is suitable for high-pressure direct injection and is very versatile. Brings great convenience to my work. Of course, the injector cleaner is not included in the whole set, so you need to buy it yourself.