AUTOOL CT500Product OverviewThe AUTOOL CT500 is a 6-cylinder GDI, EFI, FSI, and standard gasoline fuel injector cleaner and tester for workshop injector cleaning, spray observation, flow comparison, leakage checks, and simulated engine-condition testing. It combines 15 cleaning and testing functions, 12V / 70V / 120V injector driving modes, a color display, adjustable system pressure, ultrasonic cleaning, and organized accessory drawer storage.GDI / EFI / FSI 6-Cylinder Testing 15 Functions 12V / 70V / 120V70WUltrasonic Power0-0.8MPaAdjustable Pressure2000mlCleaning Tank3 YearsSupport Click to enlarge Click to enlargeBefore You Order And UseBefore You Order And UseReview the diesel injector limitation, fluid rules, ultrasonic cleaning requirement, voltage selection, and single-injector testing setup before using the CT500 injector cleaning machine.Diesel Cleaning OnlyDiesel injectors are supported for cleaning only. CT500 does not support testing diesel injectors.Do Not Test With Cleaning FluidUse professional injector test fluid for testing. Corrosive cleaning fluid may damage internal parts, rubber seals, and cause leakage if used for testing.Add Cleaning Fluid FirstBefore ultrasonic cleaning, add professional engine carbon cleaning fluid or ultrasonic injector cleaning fluid. Do not run ultrasonic cleaning dry.Keep Fluids Away From FlameTesting and cleaning fluids may be flammable. Keep the machine away from open flames and monitor it during operation.Do Not Use Gasoline As Test FluidDo not use gasoline as injector test fluid. Use professional injector test fluid or the safer alternatives described in the fluid guide.Single Injector TestingWhen testing a single injector, plug the other five cylinders. CT500 includes five plugs for this setup.Select Voltage CarefullyFor GDI injectors, start from 12V and increase to 70V or 120V only when needed. Avoid using an incorrect voltage for an extended time.Heating LimitationCT500 does not support heated ultrasonic cleaning. Choose CT450, FN606, or FN608 if a 50°C heating tank is required.Capacity Label CheckProduct specifications list a 140ml test tube amount, while some comparison and feature images show a 110ml tube scale. Confirm with support if exact tube capacity is critical.Compatibility And FitmentCompatibility And FitmentCT500 is designed for gasoline injector cleaning and testing across standard injectors, EFI, FSI, and GDI injectors. It is suitable for automotive repair shops, motorcycle maintenance, research teaching, and training departments that need repeatable injector comparison.GDI InjectorsSupports GDI injector cleaning and testing with 12V, 70V, and 120V driving modes for different injector requirements.EFI / FSI / Standard InjectorsCompatible with EFI, FSI, and standard gasoline injectors used in many European, American, and Asian vehicle applications.6-Cylinder WorkflowsSupports simultaneous cleaning and testing of up to six injectors for faster comparison and workshop service.Diesel InjectorsDiesel injectors may be cleaned only. CT500 does not support diesel injector testing. Click to enlargeKey FeaturesKey FeaturesCT500 focuses on injector compatibility, six-cylinder testing efficiency, ultrasonic cleaning, stable pressure control, practical storage, and visible test observation.Wide Injector SupportCovers GDI, EFI, FSI, and standard gasoline injectors, including direct-injection applications used by brands such as Mercedes-Benz, BMW, Audi, Porsche, and Ford.Three Voltage Modes12V, 70V, and 120V voltage selections help match different injector driving needs during GDI and gasoline injector testing.70W Ultrasonic CleaningUltrasonic cleaning power up to 70W, with cooling fan and thermal protection, helps remove carbon deposits and impurities from injectors.6-Cylinder And Dual DrainSix nozzles can be cleaned and tested at the same time. Two control valves help discharge liquid and recover test fluid for repeated use.Color Display And Pressure ControlThe color display, multifunction control panel, and electronic pressure regulation help make injector tests clearer and easier to adjust.Drawer And Accessory StorageThe bottom drawer uses marked storage areas for adapters and components, helping reduce accessory loss during daily workshop use. Click to enlarge Click to enlarge Click to enlarge Click to enlarge Click to enlarge Click to enlarge Click to enlarge Click to enlarge Click to enlarge Click to enlargeFunctions And Test CoverageFunctions And Test CoverageCT500 groups injector service into cleaning functions, spray pattern checks, flow comparison, leakage checks, and simulated operating-condition tests.Cleaning FunctionsUltrasonic cleaning, reverse flushing, and no-disassembly cleaning. No-disassembly cleaning requires special adapters; reverse flushing is only for top fuel supply injectors.Spray And Flow ChecksIdle, medium-speed, and high-speed sprayability tests; flow balance tests; and observation of injection shape and spray angle consistency.Simulated Test ModesIdle speed, medium speed, high speed, acceleration, variable speed, pulse injection, wide pulse injection, continuous injection, leak test, and leak detection test. Click to enlargeRelated GuidesRelated GuidesTesting and cleaning use different fluids. Keep them separate to protect the machine, rubber parts, internal components, and injector test accuracy.Test FluidUse professional automotive injector test fluid for performance testing. It is designed to be colorless, odorless, non-corrosive, and stable for simulating injector working states.Cleaning FluidUse professional injector ultrasonic cleaning fluid or engine carbon cleaning fluid to remove carbon deposits and impurities during ultrasonic cleaning.75% Medical Alcohol AlternativeIf professional fluid is unavailable, 75% medical alcohol may be used as an alternative, but cleaning effectiveness may be reduced and flammability precautions still apply.Fluid Safety NotesDo not use cleaning liquid to test injectors.Do not mix cleaning fluid and testing fluid.Do not run ultrasonic cleaning without fluid in the tank.Do not use gasoline as the testing fluid.Keep fluids away from open flames and monitor the machine during operation.SpecificationsAUTOOL CT500 Product SpecificationsCT500 uses AC 110V or 220V input, 0-0.8MPa adjustable system pressure, 70W intermittent ultrasonic cleaning, 28kHz ultrasonic frequency, and a 380 × 405 × 460mm body.Power And EnvironmentProductAUTOOL CT500 GDI EFI FSI Fuel Injector Cleaner And TesterPower SupplyAC 110V / 220V ±10%Frequency50-60Hz ±0.5Relative Humidity<85%Ambient Temperature0°C to 40°CExternal Magnetic Field Strength<400A/mTank, Tube, And PressureFuel Tank Capacity1500mlCleaning Tank Capacity2000mlTest Tube Amount140ml listed in specifications; some images show a 110ml tube scaleSystem Pressure0-0.8MPa adjustableTime Settings0-10minInjector ControlRPM Range0-7500 r/minInjection Times0-9900 times, step 100msPWM Pulse Width0-40ms, step 0.1msMulti Voltage Selection12V / 70V / 120VUltrasonic And BodyUltrasonic Cleaning Power70W intermittent workUltrasonic Cleaning Frequency28kHz ±0.5kHzDimensions380 × 405 × 460mmWeight18.8kg Click to enlarge Power And EnvironmentPower SupplyAC 110V / 220V ±10%Frequency50-60Hz ±0.5Relative Humidity<85%Ambient Temperature0°C to 40°C Tank, Tube, And PressureFuel Tank Capacity1500mlCleaning Tank Capacity2000mlSystem Pressure0-0.8MPa adjustableTime Settings0-10min Injector Control And UltrasonicRPM Range0-7500 r/minInjection Times0-9900 timesPWM Pulse Width0-40ms, step 0.1msVoltage Selection12V / 70V / 120VUltrasonic Power70W intermittent workUltrasonic Frequency28kHz ±0.5kHzDimensions380 × 405 × 460mmWeight18.8kg Product ComparisonProduct ComparisonUse 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.CT500 Focus6-cylinder GDI / EFI / FSI cleaner and tester with 12V / 70V / 120V modes, 15 functions, 70W ultrasonic cleaning, storage drawer, and pressure gauge display.CT400 vs CT450 vs CT500CT450 adds pulse injection test and heating up to 50°C. CT500 further adds wide pulse injection test and continuous injection test, but CT500 does not have heating.CT500 vs FN608FN608 supports 8 cylinders, dual fuel pumps, 12V / 12-70V / 120-180V voltage ranges, a 50°C heating tank, and an independently usable cleaning tank. CT500 supports 6 cylinders and one fuel pump.Entry ModelsCT150 and CT160 are 4-cylinder gasoline injector machines. CT200 adds 6-cylinder support but remains for 12V standard fuel injectors. CT400 and above are better choices for GDI injector testing.Decision CheckChoose CT500 for 6-cylinder GDI / EFI / FSI testing with advanced pulse functions. Choose FN608 if you need 8-cylinder capacity, dual pumps, heating, or higher voltage adaptability. Click to enlargeRelated ProductsRelated ProductsCompare related AUTOOL injector cleaning machines before choosing the right cylinder capacity, GDI support, heating function, voltage range, and workshop workflow.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. The options may be chosen on the product page SALESelect 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 CT160 Fuel Injector Tester & Heating Ultrasonic Cleaner MachineRated 0 out of 5(0) From US$245.00 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 CT200 Injector Ultrasonic Cleaner & TesterRated 0 out of 5(0) From US$319.00 Select options This product has multiple variants. The options may be chosen on the product page SALESelect 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 CT400 Fuel Injector Cleaning Tester with GDI TestRated 0 out of 5(0) From US$509.00 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 CT450 Ultrasonic Fuel Injector CleanerRated 0 out of 5(0) From US$549.00 Select options This product has multiple variants. The options may be chosen on the product page Manual And DownloadsManual And DownloadsDownload the CT500 manual for operation, setup, injector voltage selection, cleaning and testing functions, accessories, fluid use, and safe-use guidance. Click to enlargeAUTOOL CT500 User ManualOpen the PDF manual for CT500 setup, function selection, injector testing, fluid rules, and accessory use. Download ManualNeed Setup Confirmation?Contact AUTOOL Store before ordering if you need to confirm injector compatibility, diesel cleaning limitation, fluid selection, GDI voltage settings, adapters, packing list, or comparison with CT450, FN606, or FN608.Email[email protected] WhatsApp 86 189 2647 7404 Click to enlargeWhat Is In The BoxWhat Is In The BoxThe 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 testerInjector AdaptersMultiple connector sizes and adapters shown in the package imageSignal CablesPulse signal cable sets shown for different injector connector typesSingle Injector TestingFive plugs are included for plugging unused cylinders when testing one injectorAccessoriesRails, fittings, O-rings, tray, funnel, valve, and other accessories shown in the package imageDocumentationUser manual includedQuestions And AnswersThese 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 cylinders 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. It is designed to be colorless, odorless, non-corrosive, and stable for simulating different injector working states. 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 more testing cylinders for 6-cylinder use 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 provides 3-year support for eligible non-human damage cases, including free reissue of parts when the warranty conditions are met. Contact support for setup, compatibility, accessories, or troubleshooting.Related GuidesRelated GuidesUse these related guides to compare CT series fuel injector testers and understand nearby model differences before purchasing. Guide / 03-14-2025AUTOOL CT450 VS CT400 Which Fuel Injector Tester Is Better?As the demand for efficient automotive repair tools in workshops continues to increase, the fuel injector tester has become an indispensable device. For workshops or. Guide / 02-23-2025AUTOOL CT450 GDI Fuel Injector Cleaner & Tester: Revolutionize Your Fuel System Maintenance!We designed the AUTOOL CT450 GDI Fuel Injector Cleaner & Tester (6-cylinder) for modern automotive maintenance, especially to address carbon buildup in GDI engines. Guide / 12-10-2025See These Signs? Your Fuel Injectors Are Clean!Why is it necessary to assess the effectiveness of fuel injector cleaning? Fuel injector cleaning affects power, fuel efficiency, idle, and emissions; learn. Guide / 10-10-2025Comparison Guide: CT500 vs FN608 Fuel Injector Cleaner & TesterThe fuel injector is the “heart” of the engine’s fuel system. It precisely sprays atomized fuel into the cylinders to ensure complete combustion and smooth power.Warranty And ContactWarranty And ContactFor CT500 injector compatibility, fluid selection, GDI voltage setup, diesel injector limitation, model comparison, packing list confirmation, accessories, or warranty service, contact AUTOOL Store directly.Pre-Sales And Product SupportUse support if you need help confirming whether CT500, CT450, FN606, or FN608 is the better choice for your workshop, injector type, heating requirement, cylinder capacity, voltage range, or accessory needs.3-year support for eligible non-human damage casesGDI / EFI / FSI / standard gasoline injector compatibility confirmationDiesel injector cleaning-only limitation explanationTest fluid, cleaning fluid, and safe-use confirmation12V / 70V / 120V GDI voltage selection guidanceCT500 / CT450 / FN606 / FN608 model selectionPacking list, adapters, cables, plugs, and replacement accessory supportEmail Support[email protected] WhatsApp Support 86 189 2647 7404