AUTOOL CT500 6-Cylinder GDI/EFI/FSI Fuel Injector Cleaner and Tester
Original price was: US$769.00.US$629.00Current price is: US$629.00.
- GDI / EFI / FSI Testing
- 12/70/120 V Drive
- 70 W Ultrasonic Cleaning
- Advanced 0.1 ms Pulse Control
- GDI / EFI / FSI Testing: Compare leakage, spray appearance, collected volume, and response across up to six compatible standard gasoline, EFI, FSI, and selected GDI injectors.
- 12/70/120 V Drive: Select 12 V, 70 V, or 120 V drive to match supported injector requirements.
- 70 W Ultrasonic Cleaning: Use up to 70 W ultrasonic cleaning with cooling and thermal protection, then repeat the matched test afterward.
- Advanced 0.1 ms Pulse Control: Compare pulse, wide-pulse, and continuous-injection response with pulse width adjustable in 0.1 ms steps.
- Color Display + Pressure Control: Set pressure, speed, pulse width, pulse count, time, and functions from the color interface.
- GDI / EFI / FSI Testing: Compare leakage, spray appearance, collected volume, and response across up to six compatible standard gasoline, EFI, FSI, and selected GDI injectors.
- 12/70/120 V Drive: Select 12 V, 70 V, or 120 V drive to match supported injector requirements.
- 70 W Ultrasonic Cleaning: Use up to 70 W ultrasonic cleaning with cooling and thermal protection, then repeat the matched test afterward.
- Advanced 0.1 ms Pulse Control: Compare pulse, wide-pulse, and continuous-injection response with pulse width adjustable in 0.1 ms steps.
- Color Display + Pressure Control: Set pressure, speed, pulse width, pulse count, time, and functions from the color interface.
- 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 · Six-Position Injector Cleaner & Low-Pressure Tester
Control Six-Injector Tests with Fine Pulse Adjustment
Clean compatible standard gasoline, EFI, FSI and selected GDI injectors, then compare up to six for spray, leakage, collected volume and response under matched low-pressure conditions. Select 12 V, 70 V or 120 V drive to match supported injector requirements. Up to 70 W unheated ultrasonic cleaning, 15 cleaning/test functions and 0.1 ms pulse-width adjustment support repeatable tests, with electronic pressure control and a color interface for setup.
- EFI / FSI / Selected GDI
- 6-Position Injector Comparison
- 12 / 70 / 120 V Drive
- 0.1 ms Pulse-Width Steps
- 15 Cleaning / Test Functions
Key Features
Selectable Drive and Wide-Pulse Testing
Compatible Standard and Direct-Injection Service
This fuel injector tester cleans and comparatively tests compatible standard gasoline, EFI, FSI, and selected GDI injectors using the verified connector, adapter, drive, seal set, and low-pressure procedure.
12 V / 70 V / 120 V Drive Selection
Select 12 V, 70 V or 120 V drive to match the injector type and its operating requirements.
15 Cleaning and Testing Functions
Use ultrasonic cleaning, reverse flushing where allowed, optional on-vehicle cleaning with special adapters, leakage, spray and collected-volume checks, preset operating cycles, and three advanced pulse modes.
Pulse, Wide-Pulse, and Continuous Modes
Compare response and atomization behavior across a broader set of supported pulse conditions while keeping pressure, fluid, time, and other parameters consistent.
Fine Pulse Adjustment
Adjust pulse width in 0.1 ms steps across the supported range for closer control of comparative response checks; confirm the range for the supplied hardware and firmware version.
70 W Ultrasonic Injector Cleaning
Clean compatible injectors in the ultrasonic tank at up to 70 W using the approved fluid and procedure. The cooling fan and thermal protection support repeatable unheated cleaning; compare results by repeating the same test settings afterward.
Six-Position Side-by-Side Testing
Mount up to six compatible injectors for an injector spray pattern test and compare leakage, collected volume, and response under one documented setup. Plug all unused positions.
Color Display and Electronic Pressure Control
Select functions and adjust supported pressure, speed, pulse width, pulse count, and time from a color interface designed for clear setup and observation.
Dual Drain Control
Use the two drain-control valves to discharge liquid and recover test fluid during the supported fluid-handling procedure.
Oil-Baffle Design
CT500 includes an oil-baffle design; confirm its configuration and intended use for the supplied version.
Chinese / English Interface
Choose Chinese or English display settings for the CT500 interface.
Drawer Storage
Use the labeled drawer to organize adapters, plugs, cables, fittings, and seals close to the machine.
3 Years Warranty Support
Main unit: 3-year warranty. Standard accessories: 1-year warranty. Warranty Policy.
How to Use
Identify, Clean, Mount, Compare, and Repeat
Identify the Injector and Decision Needed
Record manufacturer and part number; confirm injector technology, permitted cleaning, connector, adapter, feed direction, seals, documented drive, and whether CT500’s low-pressure comparison can answer the service question.
Select the Correct Adapter and Voltage
Choose the correct connector and fixture, then select voltage for the injector requirement. If the setting is uncertain, start at 12 V and increase gradually to 70 V and then 120 V until the injector operates correctly. Avoid prolonged operation at an incorrect high voltage.
Add Approved Cleaning Fluid
Fill the ultrasonic tank to the documented operating level with an approved cleaning fluid. CT500 does not heat the tank; never run the ultrasonic system dry.
Run Ultrasonic Cleaning
Secure the injectors, connect the pulse leads, and run the selected cleaning cycle. Use cooling and thermal protection as designed, and treat cleaning as a process that requires a controlled retest.
Mount and Seal the Test Fixture
Install up to six compatible injectors with correct fittings and seals. Verify rail and channel sealing and plug every unused test position before applying pressure.
Add Test Fluid and Set Parameters
Use approved non-corrosive injector test fluid, then set the documented pressure, speed, pulse width, pulse count, time, voltage, and function. Keep cleaning and testing liquids separate.
Compare, Repeat, and Recover Fluids
Run the needed leakage, spray, collected-volume, preset-cycle, pulse, wide-pulse, or continuous checks under identical conditions. Swap channels when needed, repeat after cleaning, and use the two drain controls as instructed.
Safety & Compatibility
Match the Injector, Drive, Fluid, and Fixture
Match the Injector and Test Setup
Match the injector part number, technology, connector, polarity, feed direction, adapters, seals, permitted pressure, and cleaning method. Select 12 V, 70 V, or 120 V only when it matches the injector’s documented drive requirement.
Compare GDI Injectors at Low Pressure
Compare selected compatible GDI injectors under CT500’s specified low-pressure conditions. Use dedicated equipment for original rail-pressure characterization, calibration, or coding.
Use Approved Test Fluid
Use professional non-corrosive injector test fluid confirmed for the exact machine and application. Do not use gasoline or cleaning solution in the test circuit.
Use Approved Cleaning Fluid
Use a cleaning fluid permitted by the injector manufacturer and CT500 instructions, and follow the fluid SDS, material limits, and regional handling rules.
No Dry Running or Fluid Mixing
Do not run ultrasonic cleaning without liquid and do not mix cleaning and testing fluids. Follow ventilation, ignition-control, PPE, storage, monitoring, and disposal requirements.
Unheated Ultrasonic Cleaning
CT500 uses an unheated ultrasonic tank. If the approved cleaning process requires heat, choose a heated model and confirm that the injector and cleaning fluid permit it.
Secure the Rail and Plug Unused Channels
Use correct seals and fittings, inspect the fixture for leaks, and plug every unused position before pressurizing the system.
Conditional Reverse and On-Vehicle Cleaning
Reverse flushing is for compatible feed designs only. Cleaning without removal requires specified optional adapters and a vehicle-specific procedure.
Diesel Service Limit
Compatible diesel injectors may be ultrasonically cleaned when their approved procedure permits it, but CT500 does not test mechanical or common-rail diesel injectors.
Test Results
Read Spray, Leakage, and Volume Comparisons
Drips While Closed
Check fixture, adapter, seal, rail, and channel leakage before judging the injector. Persistent injector leakage after an approved clean-and-retest cycle may require specialist service or replacement.
One Cylinder Collects Less
A restriction is one possibility, but installation leakage, channel error, or unstable setup can produce the same result. Verify pressure and seals, swap channels, and repeat under the same parameters.
Spray Shape Differs
A deflected, split, coarse, or dripping spray may reflect contamination or internal damage. Repeat after permitted cleaning and escalate if the difference remains.
Pulse-Mode Response Differs
Compare injector response across pulse, wide-pulse, and continuous modes under the same settings. If lag or inconsistency remains after a setup check and repeat test, continue with the specified electrical diagnosis.
Difference Narrows After Cleaning
A reduced group difference under identical conditions suggests that removable contamination may have been reduced. Record every setting, replace required seals, and verify the outcome on the vehicle.
No Repeatable Improvement
The injector may already be clean, may have a nonrecoverable restriction, or may have an electrical or mechanical fault. Stop repeated uncontrolled cleaning and continue diagnosis or replacement.
Compare Before and After Cleaning
Compare spray pattern, leakage, collected volume, and response before and after cleaning under matched pressure, drive, fluid, and timing settings.
Compare Models
Choose an Injector Cleaning Bench
Model Guide
Choose one or more models. CT500 is selected by default.
| Product Name | CT150 | CT160 | CT200 | CT400 | CT450 | CT500 | FN602 | FN603 | FN606 | FN608 |
|---|---|---|---|---|---|---|---|---|---|---|
| Setup & Control | ||||||||||
| Input Voltage | 110/220V |
110/220V |
110/220V |
110/220V |
110/220V |
110/220V |
110/220V |
110/220V |
110/220V |
110/220V |
| Pulse Settings | 0-20ms |
0-20ms |
0-20ms |
0-20ms |
0-20ms |
0-40ms, Step Size 0.1ms |
0-20ms |
0-20ms |
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 |
0-10min |
0-10min |
| Simulated RPM Range | 0-7500rpm |
0-7500rpm |
0-7500rpm |
0-7500rpm |
0-7500rpm |
0-7500rpm |
0-7500rpm |
0-7500rpm |
0-7500rpm |
0-7500rpm |
| Supported Voltage Settings | Fixed 12 V drive; no selectable 12 / 70 / 120 V modes |
Fixed 12 V drive; no selectable 12 / 70 / 120 V modes |
Fixed 12 V drive; no selectable 12 / 70 / 120 V modes |
12V 70V 120V |
12V 70V 120V |
12V 70V 120V |
12V 70V 120V |
12V 70V 120V |
12V 12V-70V 120V-180V |
12V 12V-70V 120V-180V |
| Language Settings | × |
× |
× |
× |
× |
2 Types (Chinese, English) |
× |
× |
2 Types (Chinese, English) |
2 Types (Chinese, English) |
| Pressure Gauge Display | ✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
| LCD Display | ✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
| Cleaning & Fluid System | ||||||||||
| Test Tube Volume | 110ml |
100ml |
110ml |
110ml |
110ml |
110ml |
100ml |
110ml |
110ml |
110ml |
| Cleaning Tank Volume | 1000ml |
2000ml |
1700ml |
2000ml |
2000ml |
Confirm tank capacity for your order |
2000ml |
2000ml |
550ml |
550ml |
| Ultrasonic Cleaning Power | 70w |
70w |
70w |
70w |
70w |
70w |
70w |
70w |
70w |
70w |
| Built-in Pump | 1 |
1 |
1 |
1 |
1 |
1 |
1 |
1 |
1 |
2 |
| Cleaning Fluid Heating | × |
✓ （45℃) |
× |
× |
✓ （50℃) |
× |
✓ （45℃) |
✓ （45℃) |
✓ （50℃) |
✓ （50℃) |
| Test Liquid Level Gauge | ✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
| Cleaning Fluid Recovery Valve | ✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
| Removable Cleaning Tank | × |
× |
× |
× |
× |
× |
✓ |
× |
✓ |
✓ |
| Number of Fuel Pumps | 1 |
1 |
1 |
1 |
1 |
1 |
1 |
1 |
1 |
2 |
| Functions & Injector Coverage | ||||||||||
| Basic Functions | 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 10 Testing Functions |
3 Cleaning Functions 10 Testing Functions |
3 Cleaning Functions 12 Testing Functions |
3 Cleaning Functions 12 Testing Functions |
| Adapter Connectors | 3 Types |
5 Types |
3 Types |
9 Types |
9 Types |
9 Types |
9 Types |
9 Types |
9 Types |
9 Types |
| Injector Test Positions | 4 Fuel Injectors |
4 Fuel Injectors |
6 Fuel Injectors |
6 Fuel Injectors |
6 Fuel Injectors |
6 Fuel Injectors |
4 Fuel Injectors |
6 Fuel Injectors |
6 Fuel Injectors |
8 Fuel Injectors |
| Fuel Injector Cleaning Type | 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 |
Standard Fuel Injector GDI, EFI, FSI Long Fuel Injectors |
Standard Fuel Injector GDI, EFI, FSI Long Fuel Injectors |
| Low Impedance Injectors Supported | Compatible units only; confirm injector part number and drive requirements |
Compatible units only; confirm injector part number and drive requirements |
Compatible units only; confirm injector part number and drive requirements |
Compatible units only; confirm injector part number and drive requirements |
Compatible units only; confirm injector part number and drive requirements |
Compatible units only; confirm injector part number and drive requirements |
Compatible units only; confirm injector part number and drive requirements |
Compatible units only; confirm injector part number and drive requirements |
Compatible units only; confirm injector part number and drive requirements |
Compatible units only; confirm injector part number and drive requirements |
| Operation & Equipment | ||||||||||
| Oil Baffle Design | × |
× |
× |
× |
× |
✓ |
✓ |
✓ |
✓ |
✓ |
| Operating Condition Simulation Test | ✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
| Storage Drawer | × |
× |
× |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
Manual & Downloads
Use the Manual for the Supplied Machine
AUTOOL CT500 User Manual
Open the PDF manual for CT500 ultrasonic cleaning, injector voltage selection, pulse adjustment, six-position comparison, fluid handling, safety, and troubleshooting.
Package
What’s Included with the Six-Position Bench
- Main UnitAUTOOL CT500 six-position fuel injector testing machine with ultrasonic cleaning.
- Injector AdaptersMultiple connector sizes and adapter types; exact fitment and quantity must follow the current order.
- Signal Cable SetsPulse signal cables for the listed connector types.
- Five Position PlugsFive plugs for sealing unused positions during a single-injector test.
- Fixture and Fluid-Handling PartsRails, fittings, O-rings, tray, funnel, valve, and related parts.
- DocumentationUser manual included; confirm language and version for the delivered CT500.
FAQs
Injector Fit and Test Questions
What is the CT500 cleaning-tank capacity?
Contact AUTOOL Store to confirm the tank capacity for the supplied CT500 revision before ordering.
Can CT500 test GDI injectors at original engine pressure?
CT500 drives and compares selected compatible GDI injectors under low-pressure bench conditions. Use dedicated equipment for high-pressure characterization, calibration, or coding.
What do the advanced pulse modes add?
Use pulse, wide-pulse, and continuous-injection modes to compare response and spray behavior under supported command conditions. Apply a validated measurement system when OEM dynamic-flow calibration is required.
How Many Injectors Can CT500 Test At Once?
CT500 provides six positions for simultaneous injector cleaning and testing. Plug every unused position when testing fewer injectors; five plugs are included for a single-injector test.
Does CT500 heat the ultrasonic tank?
CT500 uses an unheated ultrasonic tank. CT450 provides heated ultrasonic cleaning up to 50 °C for approved processes that require heat.
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.
- If the voltage setting is uncertain, start at 12 V and increase gradually to 70 V and then 120 V until the injector operates correctly; avoid leaving the injector at an incorrect high voltage for a long time.
What test and cleaning fluids should I use?
Use an approved non-corrosive injector test fluid in the test circuit and an injector- and machine-approved ultrasonic cleaning fluid in the cleaning tank. Do not use gasoline, mix fluids, or assume generic medical alcohol is suitable.
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.
- No. Compatible diesel injectors may be ultrasonically cleaned when their approved procedure permits it, but dedicated equipment is required for mechanical or common-rail diesel measurement.
Are the dual drains two fuel pumps?
No. CT500’s two valves control fluid discharge and recovery, and CT500 uses one built-in fuel pump.
How is CT500 different from CT450?
CT500 emphasizes a color display, electronic pressure control, pulse, wide-pulse and continuous-injection modes, an oil baffle, and dual drain controls. CT450 instead documents heated ultrasonic cleaning up to 50 °C.
What should I do if one result is low?
Check seals, rail, channel, pressure stability, and all settings, then swap channels and repeat. Judge the injector only from a repeatable result under the same conditions.
What is the warranty?
Main unit: 3-year warranty. Standard accessories: 1-year warranty. Warranty Policy.
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.
Does CT500 Have A Heating Function?
CT500 uses unheated ultrasonic cleaning. CT450, FN606, and FN608 provide heated ultrasonic cleaning up to 50°C, depending on the model.
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-position 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. For low-pressure cleaning and testing of compatible GDI high-pressure injectors, compare CT400, CT450, CT500, FN606, and FN608.
What Accessories Are Included With CT500?
Package contents include the CT500 main unit, injector adapters, signal cables, fittings, O-rings, tray, funnel, valve, user manual, other accessories, and five plugs for single-injector testing.
How Long Is The Warranty?
Main unit: 3-year warranty. Standard accessories: 1-year warranty. Warranty Policy.
K. Jenkins –
Great for Yamaha outboards. Remember to buy fluid!
I use this primarily for rebuilding marine injectors (Yamaha and Mercury outboards). The CT500 handles them without any issues and the various test modes easily expose weak spray patterns. Dropped a star just as a warning to others: it does NOT come with testing or cleaning fluid (due to shipping laws, I assume). My project was delayed by a day because I had to run to the hardware store. The machine itself is top notch though.
Richard M. –
A must-have for modern GDI engines. Powerful ultrasonic bath.
We were sending out GDI injectors for cleaning, which was eating into our profit and bay time. The CT500 has been a fantastic addition to the shop. It drives the high-voltage GDI injectors without breaking a sweat, unlike some cheaper models that just burn out. Flow matching is spot on, and the ultrasonic bath is very powerful. It easily handles a full set of 6 injectors from a Ford F-150. Highly recommended for any busy shop.
James ✓ Verified Purchase –
This machine is a total game-changer! Had a car in the shop with severe engine misfires and power loss that was driving us crazy. Put the injectors on the AUTOOL CT500, and it immediately revealed bad spray patterns and minor leaks on two cylinders. After a 20-minute heated ultrasonic bath, all 6 injectors tested evenly like brand new. Reinstalled them and the misfire was completely gone! Build quality is super solid and it comes loaded with all the adapters you need.