In automotive repair, engine power loss is a common issue, and it is highly likely caused by abnormal exhaust back pressure. Traditional mechanical back pressure gauges have limitations when measuring exhaust back pressure, as they cannot directly display precise pressure values and rely on the technician’s experience for judgment. This often leads to higher measurement errors.
The AUTOOL PT670 digital exhaust back pressure gauge is primarily used to diagnose engine performance issues caused by exhaust system blockages or poor flow. The measurement range is up to -500 to +2000 mbar, with an accuracy of ±1.0%FS. Equipped with a 2.8-inch backlit display, it can accurately quantify exhaust resistance, replacing traditional experience-based judgment. By providing precise pressure data, it quickly locates the root cause of blockages in key components such as the catalytic converter, muffler, and exhaust pipes, thereby solving common problems such as power loss, increased fuel consumption, unstable idle speed, and illuminated warning lights (e.g., P0420 low catalytic efficiency).
Main Features and Characteristics:
High Precision Measurement
The AUTOOL PT670 features a measurement accuracy of ±1.0%FS and a range of -500 to +2000 mbar. It is capable of accurately reading instantaneous pressure changes, making it adaptable to the measurement needs of various vehicle models and operating conditions.
- Exhaust System Blockage: When the exhaust pipe or catalytic converter becomes blocked, the exhaust flow is obstructed, leading to a decline in engine performance. The devicecan accurately measure the exhaust system’s back pressure, helping to detect blockages or assess the degree of blockage, thus resolving issues such as power loss, increased fuel consumption, and unstable idle speed.
- Exhaust System Testing and Maintenance:Proper maintenance and care of the exhaust system are crucial for the long-term stable operation of a vehicle. By regularly using the device to check back pressure values, vehicle owners can identify potential exhaust system issues, allowing for timely repairs or replacements and preventing engine damage caused by poor exhaust flow.
- Assisting with Emission Testing: Abnormal exhaust back pressure can cause the vehicle to fail emission tests, preventing it from passing environmental inspections. The deviceprovides accurate data to assess the health of the emission system, ensuring the vehicle meets environmental standards.
2.8-inch Backlit Display LCD
The AUTOOL PT670 is equipped with a HD backlit screen, ensuring that data remains clear and visible even under direct sunlight or in dim environments. During testing, it displays real-time pressure values, eliminating the need for technicians to rely on experience-based judgment.
High-temperature-resistant Hose
The AUTOOL PT670 test hose is made from high-temperature-resistant materials, capable of withstanding the extreme temperatures in the exhaust system. This helps prevent hose aging, cracking, or deformation caused by heat exposure.
Riveted Copper Fittings
The AUTOOL PT670 fittings are made from riveted copper, offering high wear resistance, corrosion resistance, and oxidation resistance. These properties effectively prevent rusting, ensuring the stability of long-term testing.
One-click Unit Switching
The AUTOOL PT670 supports switching between multiple units, eliminating the need for manual calculations. Simply switch to the desired unit, and you can instantly read the accurate value, greatly enhancing testing efficiency and convenience.
Data Hold Function
The AUTOOL PT670 offers multiple features, including one-click data hold, unlock, and reset operations. This helps prevent reading fluctuations caused by handheld movements or external vibrations, providing stable and reliable data support for pressure differential diagnostics during maintenance.
The AUTOOL PT670 is equipped with a HD backlit display, making test results clear and easy to read. By measuring the exhaust system back pressure (with normal values of ≤8 kPa at idle and ≤15 kPa at 2500 r/min), it can accurately determine if the catalytic converter is experiencing abnormal back pressure due to issues such as carbon deposits or phosphorus deposits. Its compact and lightweight body makes it easy to carry in a toolbox, ensuring effortless on-site operations. Additionally, it features silicone anti-slip pads on both sides, allowing for a secure grip even when hands are sweaty, wet, or oily, providing a more reassuring and stable user experience.
