AUTOOL SDT103 12V Automotive Smoke Leak Detector

Accurately pinpoint leaks in minutes

The AUTOOL SDT103 12V Automotive Smoke Leak Detector is designed to help technicians and serious DIY users quickly locate leaks in closed vehicle systems. Using a low-oxygen combustion process, it generates dense, visible smoke that makes even small leaks easy to identify. The unit connects directly to a 12V vehicle battery and uses an external air source (air compressor or shop air), producing smoke in about 30 seconds.

Suitable for cars, motorcycles, ATVs, light trucks, snowmobiles, off-road vehicles and small marine engines, the SDT103 is ideal for diagnosing intake and vacuum leaks, exhaust leaks, EVAP system leaks, turbo and intercooler leaks, as well as leaks in fuel tank vent lines, hoses, gaskets, and seals. Overheat and anti-frost protection automatically shut the device down if internal temperature exceeds safe limits, supporting reliable, repeatable use in the workshop.

Why It's a Smart Choice

• Wide diagnostic coverage - Test intake, exhaust, EVAP, fuel tank vent, and various hose and sealing systems on most 12V vehicles with one tool.
• Fast, clear leak detection - Fills the system with dense smoke in about 30 seconds, allowing you to visually trace the exact leak point instead of relying on guesswork.
• Workshop-ready design - Compact 1.7 kg main unit (180 × 135 × 100 mm) with hook for hanging under the hood, over-temperature protection, and straightforward controls for daily professional use.

FAQ

Q: Does this unit have a built-in air pump?
A: No. The SDT103 requires an external air source (such as a small compressor). If you need a self-contained unit with pump, choose a different model.

Q: What power supply does it need?
A: It connects to a standard 12V vehicle battery using the included power cord clamp.

Q: What test fluid should I use?
A: Use baby oil or liquid paraffin. For first use, fill about 10 ml, and do not exceed 20 ml at any time.

Q: How long can I run the detector continuously?
A: Do not run it for more than 8 minutes at a time. Allow the unit to cool if it shuts off due to over-temperature protection.

Q: What is included in the package?
A: Main unit, black airbag, EVAP special connector, standard cone adapter, power cord clamp, valve core wrench, empty test oil bottle, smoke hose, and user manual.