AUTOOL SDT106 Automotive Smoke Machine with Built-In Pump & Adapter Kit
US$129.00
- Built-In Air Pump
- Common Automotive Leak Checks
- Cone, Airbag & Plug Adapters
- Under-Hood Hook Setup
- Built-In Air Pump: Run automotive smoke tests without an external compressor for a simple self-contained setup.
- Common Automotive Leak Checks: Use it for supported intake, exhaust, EVAP, fuel-tank, vehicle-sealing, and pipe-fitting leak checks.
- Cone, Airbag & Plug Adapters: Included sealing accessories help close different pipe openings instead of relying on improvised plugs.
- Under-Hood Hook Setup: Hang the tester near the work area for easier hose routing and hands-on inspection around the engine bay.
- 3-Year Warranty Main unit 3 years · Accessories 1 year
- 90-Day Returns Eligible returns within 90 days
- Official Store Genuine products · Direct support
AUTOOL SDT106 · 12V Built-In Pump Smoke Leak Detector
Self-Contained Smoke Testing for Everyday Automotive Leaks
The AUTOOL SDT106 is an automotive smoke tester with a built-in air pump. It helps technicians and DIY users find low-pressure leaks in intake, exhaust, EVAP, vehicle-sealing, fuel-tank, and line-fitting areas. The hook design makes it easier to hang the unit during work, and the detector runs from a 12V DC battery.
- 5-Second Smoke Output
- EVAP / Intake / Exhaust Checks
- Built-In Air Pump
- Hook-Mount Portable Design

Core leak-detection capabilities
Key Features
SDT106 combines quick visible smoke, low-pressure leak checks, a built-in air pump, lightweight under-hood hanging, 12V vehicle compatibility, temperature protection, and 3-year warranty support.
Smoke Starts in About 5 Seconds
The detector starts producing smoke quickly after power-on. Allow the test line to fill with smoke, then inspect for escaping smoke to locate leaks.
Low-Pressure Leak Detection
Supports low-pressure checks on EVAP, intake, exhaust, fuel-tank, vehicle-sealing, and common line-fitting areas.
Built-In Air Pump
No extra air pump is required. The built-in air pump lets the unit operate without a separate shop-air supply.
Lightweight Hook Design
The compact body and hook design make it easy to position the unit near the test area, transport it, and store it after use.
12V Vehicle Compatibility
Suitable for 12V cars, motorcycles, snowmobiles, off-road vehicles, ATVs, light trucks, and speedboats.
Overheat and Low-Temperature Protection
Overheat protection turns off power when the unit exceeds 75°C, and the unit can operate at temperatures down to -20°C.
3-Year Warranty Support
Main unit: 3-year warranty. Standard accessories: 1-year warranty. Warranty Policy
Step-by-step smoke leak testing
Step-by-Step Instructions
Use SDT106 with a 12V DC battery and 10–15 mL liquid paraffin or baby oil. After the detector starts producing smoke, allow the test line to fill, then inspect for escaping smoke to locate leaks.
Step 01
Add Testing Oil
For first use, fill 10–15 mL baby oil or liquid paraffin into the detector. Do not overfill.
Step 02
Connect the Test Line
Access the system to be tested, position the smoke leak detector securely, then disconnect the line you want to test and connect it to the detector.
Step 03
Connect 12V DC Power
Connect the smoke leak detector to a 12V DC battery, then turn on the power switch to start the detector.
Step 04
Locate the Leak
After smoke fills the test line, inspect for escaping smoke to locate leaks. Use a headlamp if extra visibility is needed.
Power, visual low-pressure testing, testing oil, heat, and operating limits
Safety & Compatibility
SDT106 has a built-in air pump and is intended for permitted low-pressure visual smoke checks. It outputs less than 12 psi and less than 5 L/min, but it has no pressure gauge, flow meter, or flow adjustment, so do not use it as a pressure-measuring or high-pressure test tool.
12V Power and Built-In Air Pump
Connect SDT106 to a 12V DC battery before use. The built-in air pump provides the test airflow, so you do not need an external compressor.
Use Visible Smoke Within the Low-Pressure Limit
SDT106 outputs less than 12 psi and less than 5 L/min. Because it has no pressure gauge, flow meter, or flow adjustment, use visible smoke to locate permitted low-pressure leaks and stay within the service limits for the system you are testing.
Testing Oil Is Not Included
Testing oil is not included. Use liquid paraffin or baby oil and add 10–15 mL before first use.
Refill Only When Smoke Becomes Thin
Add fresh oil only when the smoke output becomes thin. Drain the remaining oil first, then add fresh oil without exceeding 15 mL at one time.
Limit Continuous Use to 8 Minutes
Do not run SDT106 continuously for more than 8 minutes. Let the unit rest between test cycles.
75°C Overheat Protection
Automatic overheat protection shuts off power if the internal temperature exceeds 75°C. Let the unit cool before using it again.
Operating Temperature and Hot Surfaces
SDT106 supports operation down to -20°C. The round metal housing can become hot during use, so avoid touching hot surfaces directly.
Follow the Service Limits for the System
Do not introduce smoke into any component or system excluded by the vehicle or component service procedure. SDT106 is for permitted low-pressure smoke testing, not high-pressure system testing.
Compare AUTOOL smoke leak detector models
Compare Smoke Leak Detector Models
Compare AUTOOL smoke leak detector models by air source, pressure, output flow, operating mode, gauges, flow control, oil handling, vehicle power compatibility, and other model-specific features.
Compare models
Choose one or more models. SDT106 is selected by default.
| Specification | Model 1AUTOOL SDT203 | Model 2AUTOOL SDT50 | Model 3AUTOOL SDT60 | Model 4AUTOOL SDT100 | Model 5AUTOOL SDT101 | Model 6AUTOOL SDT102 | Model 7AUTOOL SDT103 | Model 1AUTOOL SDT106 | Model 9AUTOOL SDT205 | Model 10AUTOOL SDT205S | Model 11AUTOOL SDT206 | Model 12AUTOOL SDT208 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Core Output and Power | ||||||||||||
| How It Works | Low-Oxygen Combustion | Low-Oxygen Combustion | Low-Oxygen Combustion | Low-Oxygen Combustion | Low-Oxygen Combustion | Low-Oxygen Combustion | Low-Oxygen Combustion | Low-Oxygen Combustion | Low-Oxygen Combustion | Low-Oxygen Combustion | Low-Oxygen Combustion | Low-Oxygen Combustion |
| Input Power | 12V DC | 12V DC | 12V DC | 12V DC | 12V DC / 5A | 12V DC | 12V DC / 5A | 12V DC | 12V DC | 12V DC | 12V DC | 12V / 24V DC |
| Testing Oil Fill Volume | 10–15 mL | 10–15 mL | 10–15 mL | 10–15 mL | 10–15 mL | 10–15 mL | 10–15 mL | 10–15 mL | 10–15 mL | 10–15 mL | 10–15 mL | 10–15 mL |
| Rated Output Pressure | <15 psi | <10 psi | <10 psi | <10 psi | 3.2 kPa (0.46 psi) | <10 psi | 3.2 kPa (0.46 psi) | <12 psi | <15 psi | <15 psi | <18 psi | <10 psi EVAP / 35 psi Standard |
| Rated Output Flow | <6 L/min | <5 L/min | <5 L/min | <5 L/min | >10 L/min | >6 L/min | >10 L/min | <5 L/min | <6 L/min | <6 L/min | <6 L/min | <15 L/min |
| Rated Power | 65 W | 50 W | 50 W | 50 W | 48 W | 48 W | 48 W | 50 W | 65 W | 65 W | 70 W | 80 W |
| High-Temperature Protection | Automatic shutdown above 75°C | Automatic shutdown above 75°C | Automatic shutdown above 75°C | Automatic shutdown above 75°C | Automatic shutdown above 75°C | Automatic shutdown above 75°C | Automatic shutdown above 75°C | Automatic shutdown above 75°C | Automatic shutdown above 75°C | Automatic shutdown above 75°C | Automatic shutdown above 75°C | Automatic shutdown above 75°C |
| Response Time | Produces smoke in 5 seconds | Produces smoke in 5 seconds | Produces smoke in 5 seconds | Produces smoke in 5 seconds | Produces smoke in 5 seconds | Produces smoke in 5 seconds | Produces smoke in 5 seconds | Produces smoke in 5 seconds | Produces smoke in 5 seconds | Produces smoke in 5 seconds | Produces smoke in 5 seconds | Produces smoke in 5 seconds |
| Monitoring and Control | ||||||||||||
| Flow Meter Window | Included | Not included | Not included | Not included | Not included | Not included | Included | Not included | Not included | Included | Included | Included |
| Pressure Gauge | Included | Not included | Included | Not included | Not included | Included | Not included | Not included | Included | Included | Included | Included |
| Flow Adjustment Knob | Included | Not included | Not included | Not included | Not included | Not included | Included | Not included | Not included | Included | Included | Included |
| Fault Indicator Light | Included | Not included | Not included | Included | Not included | Included | Not included | Not included | Included | Included | Included | Included |
| Oil Level Gauge | Not included | Not included | Not included | Not included | Not included | Not included | Not included | Not included | Not included | Not included | Included | Included |
| Air Source and Operating Modes | ||||||||||||
| Air Source Type | Built-in Air Pump | Built-in Air Pump | Built-in Air Pump | Built-in Air Pump | External Air Source | Built-in Air Pump | External Air Source | Built-in Air Pump | Built-in Air Pump | Built-in Air Pump | Dual Built-In Air Pumps | Built-in Air Pump |
| Operating Modes | Smoke Mode | Smoke Mode | Smoke Mode | Smoke Mode | Smoke Mode | Smoke Mode | Smoke Mode | Smoke Mode | Air Mode / Smoke Mode | Air Mode / Smoke Mode | Air Mode / Smoke Mode | Air Mode / Smoke Mode |
| Dual Pressure Mode | Not included | Not included | Not included | Not included | Not included | Not included | Not included | Not included | Not included | Not included | Not included | Standard Mode (35 psi) / EVAP Mode (10 psi) |
| Oil Drain Valve | Not included | Not included | Not included | Not included | Not included | Not included | Not included | Not included | Included | Included | Included | Included |
| Size and Weight | ||||||||||||
| Net Weight (Main Unit) | 1.7 kg | 1.5 kg | 1.6 kg | 1.6 kg | 1.6 kg | 1.6 kg | 1.15 kg | 3.5 kg | 3.2 kg | 3.2 kg | 3.5 kg | 4.2 kg |
| Main Unit Dimensions | 145 × 80 × 200 mm | 145 × 80 × 200 mm | 145 × 80 × 200 mm | 180 × 102 × 143 mm | 180 × 100 × 135 mm | 180 × 102 × 143 mm | 180 × 100 × 135 mm | 110 × 135 × 210 mm | 295 × 295 × 207 mm | 295 × 295 × 207 mm | 150 × 150 × 275 mm | 350 × 250 × 300 mm |
Model Guide
Use this overview to identify the smoke leak detector models you want to compare in detail.
AUTOOL SDT203
Built-in air pump · <15 psi rated output pressure · <6 L/min rated output flow · Smoke Mode
AUTOOL SDT50
Built-in air pump · <10 psi rated output pressure · <5 L/min rated output flow · Smoke Mode
AUTOOL SDT60
Built-in air pump · <10 psi rated output pressure · <5 L/min rated output flow · Smoke Mode
AUTOOL SDT100
Built-in air pump · <10 psi rated output pressure · <5 L/min rated output flow · Smoke Mode
AUTOOL SDT101
External air source · 3.2 kPa (0.46 psi) rated output pressure · >10 L/min rated output flow · Smoke Mode
AUTOOL SDT102
Built-in air pump · <10 psi rated output pressure · >6 L/min rated output flow · Smoke Mode
AUTOOL SDT103
External air source · 3.2 kPa (0.46 psi) rated output pressure · >10 L/min rated output flow · Smoke Mode
AUTOOL SDT106
Built-in air pump · <12 psi rated output pressure · <5 L/min rated output flow · Smoke Mode
AUTOOL SDT205
Built-in air pump · <15 psi rated output pressure · <6 L/min rated output flow · Air Mode / Smoke Mode
AUTOOL SDT205S
Built-in air pump · <15 psi rated output pressure · <6 L/min rated output flow · Air Mode / Smoke Mode
AUTOOL SDT206
Two built-in air pumps · <18 psi rated output pressure · <6 L/min rated output flow · Air Mode / Smoke Mode
AUTOOL SDT208
Built-in air pump · <10 psi EVAP / 35 psi Standard rated output pressure · <15 L/min rated output flow · Air Mode / Smoke Mode

What’s in the Box
Package Contents
The package includes the SDT106 main unit, retail box, and the listed accessories. The oil bottle is included empty; testing oil is not included.
- Main UnitAUTOOL SDT106 smoke leak detector
- Power Cable12V DC battery clamp cable
- Smoke HoseSmoke output hose
- AdaptersCone adapter, airbag adapter, rubber plugs, and accessories
- Oil BottleEmpty testing oil bottle included; testing oil is not included
- DocumentationUser manual and SDT106 retail box
Manual, warranty, and setup support
Manual and Downloads
Use the manual below for SDT106 setup, operation, maintenance, and safety guidance.

AUTOOL SDT106 User Manual
Open the PDF manual for SDT106 operation, setup, and safety guidance.
Frequently asked questions
Frequently Asked Questions
What Testing Oil Should I Use for SDT106?
Use liquid paraffin or baby oil as the testing oil. Testing oil is not included; have liquid paraffin or baby oil ready before use.
How Much Testing Oil Should I Add?
For first use, add 10–15 mL testing oil. Do not exceed this range. Only refill when the smoke becomes thin, limit each fill to no more than 15 mL, and pour out the remaining oil before adding fresh oil.
Does SDT106 Need a 12V Battery?
Yes. The AUTOOL SDT106 smoke leak detector requires a 12V DC battery connection to operate. Confirm the power supply before starting a test.
How Long Can SDT106 Run Continuously?
Do not run the detector for more than 8 minutes continuously. Let the unit rest between uses.
What Happens If the Unit Gets Too Hot?
If the detector exceeds 75°C, automatic overheat protection turns off the power. Wait for the detector to cool before operating it again.
What Systems Can SDT106 Test?
For low-pressure exhaust checks, SDT106 can be used as an exhaust leak smoke tester. It also supports EVAP, intake, fuel-tank, vehicle-sealing, and line-fitting areas. Do not introduce smoke into any component or system that the vehicle or component service procedure excludes from smoke testing.
Can I Use SDT106 as a Car Smoke Tester?
Yes. SDT106 supports 12V cars, motorcycles, snowmobiles, off-road vehicles, ATVs, light trucks, and speedboats. It is intended for low-pressure vehicle leak detection.
Can SDT106 Be Used for High-Pressure System Testing?
SDT106 is designed for low-pressure smoke leak detection, with rated output pressure below 12 psi. Do not use it as a high-pressure leak tester.
What Accessories Are Included?
Check the product listing or your selected package option for the exact items included. The package includes the SDT106 main unit, 12V DC battery clamp cable, smoke hose, cone adapter, airbag adapter, and rubber plugs. It also includes other accessories, an empty oil bottle, user manual, and retail box. Testing oil is not included.
How Does SDT106 Differ from Other AUTOOL Smoke Leak Detectors?
SDT106 is a built-in-pump model with Smoke Mode, 12V DC power, <12 psi output pressure, and <5 L/min output flow. SDT203 adds a pressure gauge and flow adjustment. SDT205 and SDT205S support Air Mode and Smoke Mode. SDT206 uses dual built-in air pumps. SDT208 supports high pressure and low pressure modes.
What Should I Do If the Smoke Becomes Thin?
Stop operation first. Drain the remaining oil in the detector, then add fresh liquid paraffin or baby oil. Do not add more than 15 mL at one time.
How Long Is the Warranty?
Main unit: 3-year limited warranty. Standard accessories: 1-year limited warranty. See Warranty Policy for coverage and exclusions. Contact support for setup, accessories, troubleshooting, or warranty questions.























Juan ✓ Verified Purchase –
Works well !!!
Great smoke out put and easy to use
Ivan ✓ Verified Purchase –
GREAT MACHINE
Great machine for the money it does the job right and works very well
sam ✓ Verified Purchase –
Good for cheap
Great for the guys who use it here and there if your in a busy shop you may have to go with one that used shop air