MR CARTOOL V308 Injector Cleaner and Tester 4-Cylinder - Ultrasonic

In this review the MR CARTOOL V308 stands out as a practical workstation for hobbyists and small repair shops that need to clean and test up to four injectors at once. The single biggest reason to buy is its combination of a 2000ml ultrasonic tank and targeted testing modes, which lets a user remove carbon deposits and evaluate spray patterns and leakage without sending parts out. The review finds the unit delivers clear diagnostic readouts and thorough ultrasonic cleaning for most gasoline and diesel injectors, though some users reported occasional power or functionality issues.

Key Features

• Four-Injector Capacity: Clean and test up to four injectors simultaneously to save time when working on multi-cylinder engines.
• 11 Test Functions: Built-in tests including idle, medium, high speed, accelerating and leakage give a rounded assessment of injector performance and spray volume.
• Large Ultrasonic Tank: A 2000ml ultrasonic cleaning tank handles multiple injectors and helps remove stubborn carbon deposits thoroughly.
• Heated Cleaning Fluid: The heating function raises the cleaning fluid to about 40 degrees C to improve deposit removal during ultrasonic cycles.
• Humanized Controls: LED display, pressure gauge, glass test tubes and a multifunction control panel make tests and monitoring straightforward in real time.

Who It's For

The V308 is aimed at DIY mechanics, motorcyclists and small shop owners who want to maintain fuel injectors without costly replacement or outsourcing. It suits users who need a combination of cleaning and diagnostic testing in one bench unit for gasoline systems and many diesel injectors for ultrasonic cleaning.

It is less suited for technicians who require dealer-level injector programming or vehicles with injector types outside the supported configurations. Also, buyers who expect flawless electronics should note some reports of mixed functionality and occasional failure to power up.

Pros & Cons

Pros

• Effective ultrasonic cleaning that removes carbon and reduces the need for new injectors.
• Comprehensive testing modes that check leakage, spray uniformity and variable speed behavior.
• Large 2000ml tank and heating function speed up cleaning cycles and improve results.
• Clear panel with LED display and gauges for straightforward operation and monitoring.

Cons

• Some users report mixed functionality or occasional failure to power up, so initial checks on arrival are advisable.
• Fuel injector testing functions are only compatible with gasoline injectors, while ultrasonic cleaning supports most diesel and gasoline types.

Specifications

Brand	MR CARTOOL
Model	V308
Injector Capacity	4 injectors simultaneously
Ultrasonic Tank Volume	2000ml
Power	110V
Functions	11 main functions including leakage and spray volume tests
Heating	Heated cleaning fluid up to about 40 degrees C

Our Verdict

The MR CARTOOL V308 provides good value for users who want a combined ultrasonic cleaner and injector tester for small workshops or serious DIY maintenance. Its 2000ml tank, heating option and multiple test modes make it capable of restoring injector function and diagnosing common issues, although buyers should verify operation on arrival due to some reports of inconsistent power or functionality.

Frequently Asked Questions

Can it clean diesel injectors?
Yes, the ultrasonic cleaning function supports most diesel and gasoline injectors, though the injector testing modes work only with gasoline injectors.

How many injectors can be tested at once?
The unit can clean and test up to four injectors simultaneously using the four-position setup.

Does the unit heat the cleaning fluid?
Yes, a heating function raises the cleaning fluid to about 40 degrees C to improve cleaning effectiveness.