AUTOOL CT400Product OverviewThe AUTOOL CT400 is a 6-cylinder fuel injector cleaning and testing machine for standard fuel injectors, GDI, EFI, and FSI long fuel injectors. It adopts GDI injector driving technology with 12V, 70V, and 120V voltage selection, ultrasonic cleaning, sprayability tests, leakage testing, reverse flushing, no-disassembly cleaning support, and organized accessory storage for workshop injector maintenance. GDI / EFI / FSI 12V / 70V / 120V 6-Cylinder Design Ultrasonic Cleaning6Injectors12Functions2000mlCleaning Tank3 YearsWarranty Click to enlargeHow To ChooseHow To ChooseCT400 is positioned above 12V-only entry models and below the higher-end heating, wider-pulse, dual-pump, and 8-cylinder models. Use these decision points before ordering.Need GDI Injector Support?Choose CT400 if you need to clean and test standard injectors plus GDI, EFI, and FSI injectors with 12V, 70V, and 120V voltage selection.Need 6-Cylinder Testing?CT400 supports simultaneous cleaning or testing for 6 fuel injectors, making it more capable than 4-cylinder CT150 and CT160 models.Need Accessory Storage?Compared with CT200, CT400 adds GDI support and a practical drawer for injector adapters and accessories.Need Heating?CT400 does not include cleaning-fluid heating. Choose CT450, FN606, or FN608 if a 50°C heating cleaning tank is required.Need More Test Modes?Choose CT500 or FN608 if you need more advanced testing functions such as wide pulse injection or continuous injection test.Need 8-Cylinder Capacity?Choose FN608 if you need 8-cylinder injector testing and dual independent fuel pumps. CT400 supports 6 cylinders and uses one built-in pump.Before You Order And UseBefore You Order And UseUse the correct test fluid and cleaning fluid. Do not test injectors with corrosive cleaning fluid, and do not run the ultrasonic tank without fluid.Use Test Fluid For TestingTest fluid is a colorless, odorless, non-corrosive liquid used to check injector performance and simulate injector working conditions. Use professional injector test fluid for consistent results.75% Alcohol As BackupIf professional test fluid is unavailable, medical alcohol with over 75% alcohol content can be used as an alternative for injector testing.Do Not Test With Cleaning FluidDo not use corrosive cleaning fluid as injector test fluid. It may damage internal machine parts, corrode rubber, cause leaks, and may lead to repair costs.Use Cleaning Fluid For Ultrasonic CleaningCleaning fluid removes carbon deposits from injectors and is typically corrosive and flammable. Use professional ultrasonic cleaning fluid or engine carbon cleaning fluid.Do Not Run Ultrasonic Tank DryBefore using the ultrasonic cleaning function, add the carbon cleaning fluid first. Running the machine without fluid may damage the ultrasonic motherboard.Single Injector TestingWhen testing a single injector, plug the other 5 cylinders. CT400 comes with five plugs for this single-injector testing situation.GDI Voltage ReminderSelect injector voltage according to the injector type. If unsure, increase gradually from 12V to 70V to 120V until the injector works correctly.If the voltage is incorrect, the injector may not inject fuel or the machine may alarm. Adjust to the correct voltage in time.Short-term incorrect voltage may not immediately damage the injector, but do not apply incorrect high voltage to an injector for a long time.Do not use gasoline as a testing fluid, do not use corrosive fluids as test fluid, and keep flammable fluids away from open flames.Key FeaturesKey FeaturesCT400 combines GDI injector support, multi-voltage selection, 6-cylinder testing, ultrasonic cleaning, a digital control panel, fluid recycling, accessory storage, and 3-year support.GDI / EFI / FSI Injector SupportCT400 can clean and test standard injectors, EFI injectors, FSI injectors, and GDI injectors for direct injection engines.12V / 70V / 120V SelectionThe injector voltage selection supports 12V, 70V, and 120V for different injector types, helping cover more GDI and standard injector applications.6-Cylinder Cleaning And TestingSix injectors can be cleaned or tested at the same time to improve workshop efficiency and compare injector spray or volume performance side by side.Ultrasonic CleaningThe machine sends signals through the pulse signal line and uses ultrasonic vibration with cleaning fluid to help remove carbon and impurities inside injectors.Smart Control PanelThe digital panel integrates function menu, working parameter display, voltage selection, pressure regulation, function buttons, and start / stop control.Drawer And Fluid RecoveryA practical drawer helps organize adapters and accessories. The test fluid drain valve supports clear observation and recycling of test fluid. Click to enlarge Click to enlarge Click to enlarge Click to enlarge Click to enlarge Click to enlargeFunctions And Test CoverageFunctions And Test CoverageCT400 provides 3 cleaning functions and 9 testing functions for injector cleaning, simulation tests, sprayability observation, leakage checks, reverse flushing, and no-disassembly cleaning with suitable adapters.Ultrasonic CleaningSends signals to the injectors through the pulse signal line and uses cleaning fluid with ultrasonic vibration to remove carbon and impurities inside injectors.Speed Simulation TestsIdle speed test, medium speed test, high-speed test, acceleration test, and shifting speed test simulate different engine working states and check injector behavior.Sprayability TestsIdle speed sprayability test, medium-speed sprayability test, and high-speed sprayability test help observe fuel injector spray pattern and performance.Leakage TestTests the sealing condition of the fuel injector before further repair, replacement, or cleaning decisions.Reverse FlushReverse flushing sends test liquid from the outlet to the inlet of the injector and may remove dirt inside top fuel supply injectors or injector strainers.No-Disassembly CleaningDirect cleaning without disassembling injectors is supported as an additional function, but it requires special adapters. Click to enlargeSpecificationsAUTOOL CT400 Product SpecificationsCT400 is a 110V / 220V 6-cylinder injector cleaner and tester with 110ml test tubes, 2000ml cleaning tank volume, 70W ultrasonic cleaning power, one built-in pump, 9 adapter connector types, and 12V / 70V / 120V injector voltage settings.Core SpecificationsProductAUTOOL CT400 Fuel Injector Cleaner & TesterInput Voltage110V / 220VBasic Functions3 cleaning functions / 9 testing functionsSupported Cylinders6 fuel injectorsSupported Injector TypesStandard fuel injector, GDI, EFI, FSI long fuel injectorsSupported Voltage Settings12V / 70V / 120VTest Tube Volume110mlCleaning Tank Volume2000mlPulse Setting0-20msTime Setting Range0-10minSimulated RPM Range0-7500rpmUltrasonic Cleaning Power70WBuilt-In Pump1Adapter Connectors9 typesDisplay And DesignPressure Gauge DisplayYesLCD DisplayYesTest Liquid Level GaugeYesOperating Condition Simulation TestYesCleaning Fluid Recovery ValveYesStorage DrawerYesLow-Impedance Injectors SupportedYesCleaning Fluid HeatingNoNumber Of Fuel Pumps1 Click to enlarge Core SpecificationsProductAUTOOL CT400 Fuel Injector Cleaner & TesterInput Voltage110V / 220VBasic Functions3 cleaning functions / 9 testing functionsSupported Cylinders6 fuel injectorsSupported Injector TypesStandard fuel injector, GDI, EFI, FSI long fuel injectorsSupported Voltage Settings12V / 70V / 120VTest Tube Volume110mlCleaning Tank Volume2000mlPulse Setting0-20msTime Setting Range0-10minSimulated RPM Range0-7500rpmUltrasonic Cleaning Power70WBuilt-In Pump1Adapter Connectors9 types Display And DesignPressure Gauge DisplayYesLCD DisplayYesTest Liquid Level GaugeYesOperating Condition Simulation TestYesCleaning Fluid Recovery ValveYesStorage DrawerYesLow-Impedance Injectors SupportedYesCleaning Fluid HeatingNoNumber Of Fuel Pumps1 Product ComparisonProduct ComparisonCompare CT400 with CT150, CT160, CT200, CT450, CT500, FN606, and FN608 before choosing the right cylinder capacity, injector compatibility, heating function, voltage range, pump configuration, and test functions.CT400 Focus6-cylinder GDI / EFI / FSI cleaning and testing, 12V / 70V / 120V voltage selection, 2000ml cleaning tank, storage drawer, one built-in pump, and no heating function.CT200 vs CT400CT200 supports 12V standard fuel injectors. CT400 supports standard injectors plus GDI injectors and adds a dedicated accessory drawer.CT400 vs CT450 vs CT500CT450 adds pulse injection test and 50°C heating. CT500 adds wider pulse injection and continuous injection tests. CT400 and CT500 do not include cleaning-fluid heating.CT150 / CT160 / CT200CT150 and CT160 are for 4-cylinder gasoline injector cleaning and testing. CT160 adds ultrasonic heating. CT200 adds two more testing cylinders for 6 total cylinders.FN606 / FN608FN606 supports 6-cylinder testing with one pump. FN608 supports 8-cylinder testing and two independent fuel pumps, so one side can continue working if the other pump fails.Decision CheckBefore ordering, compare supported cylinders, GDI compatibility, heating, voltage range, cleaning tank design, built-in pump quantity, and required test modes. Click to enlarge Click to enlargeWhat Is In The BoxWhat Is In The BoxThe packing list image shows the CT400 main unit and included injector testing accessories. Final package contents should follow the package image and current product configuration.Main UnitAUTOOL CT400 fuel injector cleaner and testerInjector AccessoriesAdapter sets, injector connector parts, sealing rings, fittings, and accessories shown in the package imageTesting Setup PartsOil rail, glass measuring cylinder-related parts, signal wires / harnesses, and lock pole accessories shown in the package imageSingle-Injector TestingFive plugs are included for testing a single injector while plugging the other five cylindersFluid HandlingFunnel, drain-related parts, ultrasonic cleaning tank cover, and fluid-related accessories shown in the package imageDocumentation And PowerUser manual and power cable shown in the package imageManual And DownloadsManual And DownloadsDownload the CT400 manual for setup, injector voltage selection, test functions, cleaning-fluid notes, accessories, and safe operation guidance. Click to enlargeAUTOOL CT400 User ManualOpen the PDF manual for CT400 setup, operation, and maintenance information. Download ManualNeed Setup Confirmation?Contact AUTOOL Store before ordering if you need to confirm injector type, CT400 voltage selection, test fluid, cleaning fluid, adapters, package contents, diesel injector limitation, or CT400 / CT450 / CT500 / FN606 / FN608 model selection. Email[email protected] WhatsApp 86 189 2647 7404Related ProductsRelated ProductsCompare related ultrasonic cleaning machines, injector testers, accessories, signal generators, measuring tubes, and fuel system cleaning tools before choosing the right setup.Select options This product has multiple variants. The options may be chosen on the product page Add to wishlist Add to compare Quick view iconQuick view Fuel Injector Cleaner & TesterAUTOOL CT80 Ultrasonic Cleaning MachineRated 0 out of 5(0) From US$99.00 Select options This product has multiple variants. 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The options may be chosen on the product page Add to wishlist Add to compare Quick view iconQuick view Fuel Injector Cleaner & Tester AccessoriesAutool Original Volumetric Flasks Glass Tube for Fuel Injector Cleaner and TesterRated 0 out of 5(0) From US$10.00 Select options This product has multiple variants. The options may be chosen on the product page Select options This product has multiple variants. The options may be chosen on the product page Add to wishlist Add to compare Quick view iconQuick view Fuel Injector Cleaner & TesterAUTOOL C80 Auto Injector Cleaner Non-Dismantle Auto Fuel Injector CleanerRated 0 out of 5(0) From US$109.00 Select options This product has multiple variants. The options may be chosen on the product page Questions And AnswersThese answers cover test fluid, cleaning fluid, ultrasonic cleaning, diesel injector limits, GDI voltage selection, single-injector testing, and CT400 comparison with other AUTOOL injector cleaner and tester machines. Can AUTOOL CT Series Products Clean And Test Diesel Injectors? AUTOOL CT series products can clean diesel injectors, but they cannot test diesel injectors. If diesel injector testing is required, confirm the correct dedicated equipment before ordering. How Should I Choose Test Fluid? Test fluid is used to evaluate fuel injector performance. It is a colorless, odorless, non-corrosive liquid that simulates different injector working states. For consistent results, use professional automotive injector test fluid. If unavailable, medical alcohol with over 75% alcohol content can be used as an alternative. How Should I Choose Cleaning Fluid? Cleaning fluid removes carbon deposits from fuel injectors and is typically corrosive and flammable. For consistent results, use professional ultrasonic cleaning fluid or professional engine carbon cleaning fluid. If unavailable, 75% medical alcohol can be used as a substitute, but cleaning performance may vary. Can I Use Cleaning Fluid To Test Injectors? No. Cleaning fluid is corrosive and may damage internal machine components, corrode rubber parts, and cause leakage. Use professional injector test fluid for testing. If equipment is damaged because cleaning fluid is used during injector testing, repair costs may need to be borne by the user. Do I Need To Add Fluid Before Ultrasonic Cleaning? Yes. Before using the ultrasonic cleaning function, add the professional carbon cleaning fluid first. Do not run the equipment without fluid, because dry operation may damage the ultrasonic motherboard. How Do I Set Test Parameters On CT400? You do not need complicated special settings. Select the function number and set the test time. The testing process is designed to be simple and easy to operate. How Do I Select The Correct Voltage When Testing GDI Injectors? Select the voltage according to the injector type. If you are unsure, gradually increase the voltage from 12V to 70V to 120V until the injector functions correctly. If the voltage selection is incorrect, there may be no fuel injection or the machine may alarm. Will The Wrong Voltage Damage A GDI Injector? Short-term incorrect voltage usually will not immediately damage the injector. However, do not apply incorrect high voltage to an injector for a long time. If the injector does not work properly, adjust to the correct voltage in time. How Do I Test A Single Injector With CT400? When testing a single injector, plug the other five cylinders. CT400 comes with five plugs for this purpose. What Is The Difference Between CT200 And CT400? CT200 only supports 12V standard fuel injectors. CT400 supports both 12V standard injectors and GDI injectors, making it compatible with a wider range of injector types and vehicles. CT200 does not have dedicated accessory storage, while CT400 includes a drawer for injector adapters and other accessories. What Is The Difference Between CT400, CT450, And CT500? Compared with CT400, CT450 adds the Pulse Injection Test. Compared with CT450, CT500 further adds Wide Pulse Injection Test and Continuous Injection Test for more advanced injector testing. For cleaning, CT450 features ultrasonic cleaning with heating up to 50°C, while CT400 and CT500 do not have a heating function. 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, each corresponding to a separate left or right fuel rail. If one pump fails, only the corresponding rail is affected while the other side can continue working. FN606 has a single fuel pump, so if that pump fails, the whole system stops working until the pump is replaced. What Is The Difference Between FN608 And CT500? FN608 supports 8-cylinder testing, while CT500 supports 6-cylinder testing. FN608 has a heating cleaning tank that can maintain up to 50°C, while CT500 does not support heating. FN608 supports 12V, 12-70V, and 120-180V voltage ranges, while CT500 supports 12V, 70V, and 120V. FN608 also has a cleaning tank that can be used independently or together with the main unit, plus two independent fuel pumps. CT500 has an integrated cleaning tank and one fuel pump. What Is The Difference Between CT150, CT160, And CT200? CT150 and CT160 are designed for cleaning and testing fuel injectors of 4-cylinder gasoline engines. The main difference is that CT160 is equipped with an ultrasonic heating function, while CT150 does not have this feature. Compared with CT150, CT200 adds two more testing cylinders for a total of 6 cylinders, while the other functions remain similar. If you only need a tester for 12V gasoline fuel injectors, CT160 is a good choice. If you need to test GDI high-pressure injectors, choose CT400, CT450, CT500, FN606, or FN608 for better compatibility. How Long Is The Warranty? AUTOOL provides 3-year support for eligible non-human damage cases. Within the warranty period, AUTOOL may replace parts free of charge for damage caused by non-human factors. For setup, accessories, fluid selection, voltage selection, model comparison, or troubleshooting, contact AUTOOL Store support.Warranty And ContactWarranty And ContactFor CT400 injector compatibility, GDI voltage selection, test fluid, cleaning fluid, adapter confirmation, single-injector testing, diesel injector limitation, model selection, accessories, manual support, or warranty questions, contact AUTOOL Store directly.Pre-Sales And Product SupportUse support if you need help confirming whether CT400 fits your injector type, whether CT450 / CT500 / FN606 / FN608 is more suitable, which fluid to use, how to avoid corrosive testing-fluid mistakes, or which adapters are needed for your workflow.3-year warranty support for eligible non-human damage casesGDI / EFI / FSI injector compatibility confirmation12V / 70V / 120V voltage selection guidanceTest fluid and cleaning fluid selection supportUltrasonic cleaning and dry-run safety confirmationAccessory, adapter, and packing list confirmationCT400 / CT450 / CT500 / FN606 / FN608 model selection Email Support[email protected] WhatsApp Support 86 189 2647 7404