QCM200-6T Gasoline Injector Tester & Cleaner

The QCM200-6T Gasoline Injector Tester & Cleaner is engineered for high-volume service bays demanding 6-cylinder simultaneous processing without compromising precision. This benchtop system integrates closed-loop pressure control with a 6-liter test fluid reservoir to tackle injector flow degradation in modern Multi-Port Injection (MPI) engines. By combining ultrasonic cavitation at variable frequencies with dynamic pulse simulation, the unit restores injector atomization and balances fuel delivery across all cylinders efficiently.

The QCM200-6T features a heavy-duty ultrasonic generator operating across 25 KHz to 40 KHz, allowing technicians to select optimal frequencies for dislodging stubborn varnish without damaging delicate internal components. The system offers pressure regulation from 0 to 6 kg/cm² (approximately 0 to 0.6 MPa) , accurately simulating a vehicle's fuel pump output. Users can fine-tune pulse width from 0 to 20 ms with a precise 0.1 ms step, essential for isolating driveability issues across the RPM band. The unit includes graduated 120 ml glass measuring tubes with backlit display for quantitative flow analysis, while the 6L test fluid tank ensures ample capacity for prolonged sessions. The machine supports AC 110V / 220V ±10% power input for global workshop compatibility. This model is primarily designed for 12V gasoline MPI injectors; however, users must verify high-voltage driver modules and adapters before testing GDI, FSI, or diesel common rail injectors, as internal seals are optimized for port-fueled applications.

The QCM200-6T features an intelligent control interface executing rigorous diagnostic protocols. The Idle Test (0-20ms) simulates stationary vehicle conditions, measuring injector response at low pulse widths to detect rough idle causes. The Medium/High-Speed Test replicates highway cruising to evaluate fuel delivery under sustained loads. The Acceleration/Deceleration Test mimics aggressive throttle changes like overtaking, assessing dynamic response of the injector armature. For holistic analysis, the Uniformity and Atomization Observation via backlit graduated cylinders allows technicians to visually confirm balanced fuel volume and consistent conical spray patterns, preventing cylinder-to-cylinder imbalances that trigger OBD-II lean or rich codes. The Seal Test (Leakage Check) pressurizes the system to detect micro-drips, preventing fuel dilution of engine oil-a common cause of premature bearing wear in fleet vehicles.

The QCM200-6T's longevity depends on strict fluid separation protocols. Under no circumstances should fluids be mixed. The ultrasonic cleaning tank must use specialized "Injector Cleaner" (caustic and flammable), while the measuring tube circuit requires "Professional Injector Test Fluid" (or medical-grade industrial alcohol). Cross-contamination damages internal seals and compromises accuracy. The machine features Dry-Burn Protection; ultrasonic function won't activate without adequate fluid to prevent transducer burnout. For deep debris in the inlet filter, the Reverse Flush function forces solution from outlet to inlet to dislodge particulate matter. The No-Disassembly Cleaning feature, with compatible adapters, allows on-vehicle cleaning for specific MPI configurations, making this unit valuable for retail service centers and wholesale diesel parts suppliers.

Q1: Can the QCM200-6T handle diesel common rail injectors?
A: The QCM200-6T is designed for 12V gasoline MPI injectors. Diesel common rail systems operate at drastically higher pressures (exceeding 150 MPa) and require specialized high-voltage drivers. Unless upgraded with the diesel module and fittings, using it for diesel injectors is not recommended.

Q2: How often should we replace O-rings and seals?
A: Due to corrosive cleaning agents and high-frequency vibration, inspect adapters and internal seals bi-weekly in high-volume shops. Generally, replacing the seal kit every 6 months ensures consistent 0-6 kg/cm² pressure accuracy and prevents fluid leaks.

Q3: Is the QCM200-6T compatible with GDI injectors?
A: Caution advised. While the machine can mechanically hold GDI injectors, they require specialized high-pressure drivers for accurate pulse testing. Confirm the unit has a GDI driver module and specific adapters before testing; otherwise, flow data will be inaccurate.

Q4: How to clean heavily clogged injectors safely?
A: Use a graduated approach: start with a 15-minute ultrasonic cycle at 25 KHz with aggressive cleaner, immediately followed by a Reverse Flush to expel debris. Avoid exceeding 40 KHz for extended periods on older injectors to prevent potential harmonic damage.

Q5: How precise is the flow measurement between cylinders?
A: The QCM200-6T uses precision 120 ml graduated glass tubes with background illumination for visual comparison across all channels. While not a lab-grade flow bench, its consistency effectively identifies cylinder imbalances that cause drivability issues and trigger OBD-II fuel trim codes.

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