FOXWELL JT200 Fuel Injector Tester & Cleaner - Bench-Top Injector Flow/Pattern Tester (6–12V, 9–14.5mm adapters)

The FOXWELL JT200 is a bench-top fuel injector tester and cleaner that shows spray patterns and measures flow so you can identify, compare, and verify injector performance before you replace parts.

The JT200 combines visual inspection with precise flow measurement and automatic RPM simulation to diagnose conventional EFI and MPI top-feed injectors. Instead of guessing which injector is underperforming, this tester gives clear, side-by-side readings and a visible spray pattern inside sealed graduated cylinders. It’s designed for home mechanics and workshops that need fast, measurable results without risking spills or frequent engine run-ups. (Not compatible with GDI or diesel injectors.)

How does the JT200 reveal a bad injector that electrical tests miss?

Electrical continuity checks only tell you whether the injector coil is intact, not whether the nozzle is atomizing fuel correctly. The JT200’s transparent collection cylinders let you see spray shape, droplet distribution, and stream consistency while measuring actual volume delivered per cycle.

• Visual spray inspection shows distorted sprays, dribbling, or uneven atomization.
• Graduated cylinders provide quantitative flow readings to compare injectors.
• Sealed design prevents spills during observation and testing.

Can I trust the JT200 for comparison testing across all injectors?

Yes. The JT200 was built to run each injector under the same simulated engine conditions so you can compare volume and spray quality directly. Use automatic RPM simulation to reproduce idle-to-high-RPM behavior, or switch to manual mode for targeted checks at any specific pulse rate.

• Automatic mode simulates 100–9,900 RPM for realistic performance data.
• Manual mode lets you test at a fixed pulse rate to isolate intermittent faults.
• Clear scale markings make it easy to log deviations from factory specs.

What vehicles and injectors are compatible with the JT200?

The JT200 supports most conventional EFI and MPI top-feed injectors that use 9–14.5 mm adapter sizes and works with 6V and 12V systems. It ships with a set of adapters to fit a wide range of cars, light trucks, and motorcycles, but it cannot test gasoline direct injection (GDI) or diesel injectors.

• Includes Φ9–14.5 mm adapters for common top-feed injector sizes.
• Operates from 6V motorcycles to 12V car electrical systems.
• Not suitable for GDI or diesel injection systems—use only compatible injectors.

What safety and test-fluid guidelines should I follow with the JT200?

The JT200 uses sealed graduated cylinders to reduce fire and spill risks during testing, but choosing a safe test fluid is essential. Do not use gasoline; instead use approved cleaning fluids, kerosene, diesel (where allowed for bench testing), or high-purity isopropyl alcohol. Always observe shop safety: ventilate, keep ignition sources away, and use personal protective equipment.

• Never use gasoline—use recommended test fluids only to avoid tube damage and fire hazards.
• Sealed cylinders reduce splashing and allow safe visual inspection.
• Follow local disposal rules for used test fluid and cleaning residues.

Who is this for: The FOXWELL JT200 is for DIY mechanics, home-garage enthusiasts, and light-service shops that need a reliable, measurable way to diagnose faulty conventional injectors without swapping parts blindly. If you work on cars, pickups, or motorcycles with top-feed EFI injectors and want to save time, fuel, and unnecessary parts costs, the JT200 provides visual confirmation and flow numbers to guide repairs. If your vehicles use GDI or diesel injection, choose a dedicated tester designed for those systems instead.