Fuel Injector Cleaner Tester Machine V309 - 4-Cylinder Ultrasonic Kit

In this review of the V309 injector cleaner tester machine the bottom line is simple: it is best for independent technicians and serious DIYers who need a versatile unit that cleans and diagnoses up to four injectors at once. The V309 combines ultrasonic cleaning with a microcomputer-controlled oil pressure loop to simulate engine conditions, which makes it valuable when the primary goal is restoring spray patterns and removing carbon in EFI/FSI/GDI and standard injectors. It is most compelling for shops that handle a wide range of vehicles and want simultaneous multi-injector service.

Key Features

• Ultrasonic cleaning: Powerful cavitation removes deposits and carbon from injector bodies without disassembly when used with the correct adapters.
• Microcomputer closed-loop control: Simulates idle, medium and high speed operation so technicians can assess injector performance under realistic conditions.
• Four 110ml cylinders: Individual cylinders allow direct visual checks of spray and enable testing or cleaning up to four injectors at once, speeding workflow.
• Nine test functions: Includes idle, medium, high, accelerating and variable speed tests plus leakage and spray-volume checks for methodical diagnostics.
• Dual voltage power: Supplied power cords for 110V and 220V make the unit usable in different workshop electrical setups without additional transformers.

Who It's For

The V309 suits independent mechanics, small repair shops and advanced DIYers who service fuel injection systems on a variety of cars and motorcycles, including high-pressure EFI/FSI/GDI injectors. Its ability to handle four injectors and perform multiple diagnostic tests makes it useful for routine maintenance and stubborn carbon-clearing jobs.

It is less suitable for occasional hobbyists who only need a single simple cleaning pass or for users who expect plug-and-play operation without following setup and adapter instructions. A few buyers reported intermittent power issues, so shops needing guaranteed nonstop uptime may want to keep a backup option.

Pros & Cons

Pros

• Comprehensive cleaning options with ultrasonic wash and reverse pulse flushing to clear internal blockages.
• Detailed diagnostics via nine test modes help identify leakage and inconsistent spray volumes.
• Four-cylinder simultaneous capability and large 1600ml tank reduce repetitive cycles and save time.
• Includes both 110V and 220V cords and selectable voltages for flexible workshop use.

Cons

• Some users reported mixed functionality with intermittent power-up issues on arrival, so thorough inspection on receipt is advised.
• The unit requires learning adapters and setup for no-disassembly cleaning of throttle bodies or combustion chambers, which adds setup time.

Specifications

Product	V309 fuel injector cleaner tester machine
Cleaning method	Ultrasonic cleaning and reverse pulse flushing
Compatible injectors	EFI, FSI, GDI and standard injectors (compatible with 99% of vehicles)
Cylinders	4 large cylinders, 110ml each
Tank capacity	1600ml
Test functions	9 functions including idle, medium, high, accelerating, variable, leakage and spray volume tests
Power	AC 110V/220V (two supplied power cords)

Our Verdict

The V309 is a capable injector cleaning and diagnostic machine that delivers strong ultrasonic cleaning, flexible test modes and four-injector throughput at a good value for busy independents and advanced DIY technicians. While a small number of buyers experienced power or setup hiccups, the combination of cleaning technologies and closed-loop pressure control makes it a practical choice for restoring injector spray and diagnosing leaks across most petrol and diesel systems.

Frequently Asked Questions

Can the V309 clean high-pressure GDI injectors?
Yes, the unit supports high-pressure EFI/FSI/GDI injectors and standard injectors when used with appropriate adapters and correct setup.

How many injectors can be cleaned or tested at once?
The V309 supports simultaneous cleaning or testing of up to four injectors using its four 110ml cylinders and a 1600ml tank.

What voltages does the machine support?
The machine is supplied with two power cords and supports AC 110V and 220V operation to match different workshop power supplies.