AUTOOL SDT103 12V Smoke Leak Detector for EVAP and Vacuum Systems

The AUTOOL SDT103 is a reliable, compact EVAP smoke leak detector engineered for precise automotive diagnostics. Powered by a 12V DC supply and using an external air source, it produces smoke in seconds to help you pinpoint leaks in vacuum lines, intake systems, EVAP components, and more. The unit includes a built-in flow meter for pressure control, along with overheat and freeze protection to keep your testing safe and consistent.

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Key Features

Produces smoke within 10-30 seconds

Requires an external air source (no internal pump)

Built-in flow meter for adjustable pressure control

Auto shutoff above 75 C to prevent overheating

Cold-resistant: operates down to 20 C

Powered by any 12V car battery

Compact and portable: easy to hang in the engine bay

Works on cars, bikes, light trucks, snowmobiles, ATVs, and more

Uses baby oil or liquid paraffin (10-15 ml fill)

Includes 3-year warranty

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Use Cases

Diagnose vacuum leaks causing engine misfires or poor idle

Locate hard-to-find EVAP leaks triggering check engine lights

Identify turbo system or boost pressure loss

Verify hose, line, or gasket seal integrity during installation

Essential for workshops, mobile mechanics, and DIY users

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Technical Specs

Power Supply: 12V DC

Outlet Pressure: 3.2 kPa

Oil Capacity: 10-15 ml

Operating Temp: 20 C to +75 C

Smoke Output: ~10-30 seconds after activation

Weight: 1.7 kg

Dimensions: 180 × 135 × 100 mm

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How To Use

Fill the oil reservoir with 10-15 ml of baby oil or paraffin.

Hang the SDT103 in the engine bay using the attached hook.

Connect the unit's power clips to a 12V vehicle battery.

Connect the smoke output hose to the target system or pipe.

Connect external air source and open airflow valve.

Activate the device and observe the flow meter.

Wait 10-30 seconds for visible smoke.

Use a flashlight or inspection light to locate leak points.

Turn off the unit and allow it to cool after use.

What's in the box

1 × SDT103 Smoke Leak Detector

1 × Power Cable (Battery Clips)

1 × Smoke Hose

1 × Cone Adapter

1 × Oil Filler Bottle

1 × Instruction Manual

What's in the box
1 x Cleaning & Repairs