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AUTOOL SDT100 Smoke Machine for Vacuum Leaks with Built-In Pump
US$65.00
Key Features
- Vacuum, Intake & EVAP Testing
- Built-In Air Pump
- Airbag & Cone Adapters
- Smoke in About 5 Seconds
- Vacuum, Intake & EVAP Testing: Built for common vacuum, intake, EVAP, exhaust, crankcase, fuel-tank, and other supported low-pressure leak checks.
- Built-In Air Pump: No external compressor is required, keeping setup straightforward for DIY users and routine garage work.
- Airbag & Cone Adapters: Included sealing adapters help close different intake and pipe openings with less improvised blocking.
- Smoke in About 5 Seconds: Starts producing visible smoke quickly so you can begin tracing leak points sooner.
- 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 SDT100 · Built-In Pump Smoke Leak Detector for Vacuum & EVAP Leaks
Find Vacuum and Intake Leaks Without Shop Air
The AUTOOL SDT100 is a compact automotive smoke leak detector with a built-in air pump. It checks for leaks in vacuum, EVAP, intake, exhaust, crankcase, fuel tank, oil seal, coolant tank, and low-pressure turbo systems. It runs on a 12V DC battery and uses 10–15 mL liquid paraffin or baby oil as testing oil. Compatible vehicles include cars, motorcycles, ATVs, snowmobiles, off-road vehicles, light trucks, and speedboats.
- EVAP / Vacuum Leak Detection
- 5-Second Smoke Output
- Built-In Air Pump
- Cars / Motorcycles / ATVs
<10 psiRated Pressure
1.6 kgMain Unit Weight
75°C / -20°COverheat / Min. Operating Temp.
3 YearsMain Unit Warranty
Core leak-detection capabilities
Key Features
SDT100 combines EVAP and vacuum smoke leak detection with a built-in air pump for low-pressure systems. Grouped controls keep the main switches and connections easy to identify. Automatic overheat and low-temperature protection, 12V vehicle compatibility, and 3-year main-unit warranty support round out the core features.
EVAP and Vacuum Leak Detection
For vacuum-system diagnostics, SDT100 works as a smoke machine for vacuum leaks. It also supports EVAP, intake, exhaust, crankcase, oil seal, intercooler air, fuel tank, coolant tank, line-fitting, and low-pressure turbo system leak checks.
Built-In Air Pump
No extra pump is required. The built-in air pump helps save setup time and makes smoke leak detection easier for both technicians and automotive enthusiasts.
Overheat + Low-Temperature Protection
Overheat and freeze protection automatically stop operation when needed. The unit can operate at temperatures down to -20°C.
Grouped Controls & Connections
The smoke switch, power and alarm indicators, oil filler, smoke output, power socket, and handle are grouped in one compact layout. This makes setup and component identification easier.
12V Vehicle Compatibility
Compatible with cars, motorcycles, ATVs, snowmobiles, off-road vehicles, light trucks, and speedboats.
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 SDT100 with a 12V DC battery and 10–15 mL liquid paraffin or baby oil. The connected test line can fill with smoke in about 30 seconds, allowing visual leak detection.
Step 01
Add Testing Oil
Fill 10–15 mL baby oil or liquid paraffin into the detector before use. Do not overfill.
Step 02
Connect the Test Line
Access the system to be tested, hang the detector if needed, then disconnect the line you want to test and connect it to the smoke leak detector.
Step 03
Connect 12V Power
Connect the detector to a 12V DC battery, then turn on the power switch to start the detector.
Step 04
Locate Leaks
In about 30 seconds, the connected test line will be filled with smoke. Inspect for escaping smoke to locate leaks and use a headlamp if necessary.
Power, fault-indicator use, testing oil, heat, and low-pressure limits
Safety & Compatibility
SDT100 has a built-in air pump and fault indicator, but it does not show pressure or airflow readings. Use visible smoke to locate permitted low-pressure leaks and follow the service limits for the system you are testing.
12V Power and Built-In Air Pump
Connect SDT100 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 the Fault Indicator for Unit Status
SDT100 outputs less than 10 psi and less than 5 L/min. The fault indicator shows unit status; it does not measure pressure or airflow. Use visible smoke and follow the vehicle or component service procedure when judging the test.
Testing Oil Is Not Included
Testing oil is not included. Use liquid paraffin or baby oil and add 10–15 mL before 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 SDT100 continuously for more than 8 minutes. Automatic overheat protection shuts the unit off above 75°C. Let it cool before restarting.
Operating Temperature and Hot Surfaces
SDT100 supports operation down to -20°C. The round metal housing can become hot during use, so avoid touching hot surfaces directly.
Do Not Use for Direct High-Pressure A/C Testing
SDT100 cannot directly pressure-test an automotive A/C system. If a service procedure permits smoke on an isolated A/C line section, follow that procedure and use smoke only as an indirect visual aid.
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
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| Specification | Model 1AUTOOL SDT203 | Model 2AUTOOL SDT50 | Model 3AUTOOL SDT60 | Model 1AUTOOL SDT100 | Model 5AUTOOL SDT101 | Model 6AUTOOL SDT102 | Model 7AUTOOL SDT103 | Model 8AUTOOL 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 SDT100 main unit and the accessories shown below. The oil bottle is included empty; testing oil is not included.
- Main UnitAUTOOL SDT100 smoke leak detector
- Power Cable12V battery clamp cable
- Smoke HoseSmoke output hose
- AdaptersCone adapter, red connector, thin hose, and airbag adapter
- Oil BottleEmpty testing oil bottle included; testing oil is not included
- DocumentationUser manual and SDT100 retail box
Manual, warranty, and setup support
Manual and Downloads
Use the manual below for SDT100 setup, operation, maintenance, and safety guidance.
AUTOOL SDT100 User Manual
Open the PDF manual for SDT100 operation and setup guidance.
Frequently asked questions
Frequently Asked Questions
What Testing Oil Should I Use for SDT100?
Testing oil is not included. If dedicated smoke-testing oil is unavailable, use liquid paraffin or baby oil.
How Much Testing Oil Should I Add?
Add 10–15 mL testing oil before use. Do not add more than 15 mL at a time. Refill only when the smoke becomes thin, and drain remaining testing oil before adding fresh testing oil. If too much oil is added accidentally, drain some oil out before operation.
Can SDT100 Detect EVAP Leaks?
Yes. AUTOOL smoke leak detectors can test leaks in the EVAP system. Use the EVAP adapter or service tool that matches the vehicle test port.
Can SDT100 Directly Test Automotive A/C System Leaks?
No. The automotive A/C system operates at about 1.7–3.0 MPa output pressure, while SDT100 has rated output pressure below 10 psi. SDT100 cannot directly pressure-test the automotive A/C system for leaks. Use smoke only to help inspect an A/C line section after isolating and pressurizing it according to the service procedure.
How Can Smoke Help Locate a Leak in an Isolated A/C Line Section?
First isolate and pressurize the A/C line segment according to the vehicle or A/C service procedure. Then apply smoke near the test section and observe whether escaping airflow disturbs the smoke. If escaping air moves the smoke, inspect that area for a possible leak.
What Systems Can SDT100 Test?
SDT100 can locate vacuum leaks and also supports low-pressure checks across EVAP, intake, exhaust, crankcase, and low-pressure turbo systems. It can also check oil seals, intercooler air paths, fuel tanks, coolant tanks, line fittings, and engine sealing areas.
What Power Supply Does SDT100 Need?
SDT100 runs on a 12V DC vehicle battery. This makes it convenient for vehicle maintenance and easy to power in typical automotive repair environments.
Can I Adjust the Pressure on SDT100?
SDT100 uses fixed smoke-mode output below 10 psi. If separate Standard and EVAP pressure modes are required, compare SDT208. Use SDT100 only within its specified low-pressure range.
What Accessories Are Included?
Check the product listing or your selected package option for the exact items included. SDT100 includes the main unit, 12V battery clamp cable, smoke hose, cone adapter, red connector, thin hose, and airbag adapter. The package also includes an empty testing oil bottle, user manual, and retail box. Testing oil is not included.
How Do AUTOOL Smoke Leak Detector Models Differ?
SDT101 and SDT103 use external air sources and 3.2 kPa / 0.46 psi EVAP pressure. SDT106 uses a built-in air pump with <12 psi output. SDT203, SDT205, and SDT205S use <15 psi output, while SDT206 uses <18 psi with two built-in air pumps. SDT208 provides Standard 35 psi and EVAP 10 psi modes. Compare air source, output pressure, flow, mode, and accessories before ordering.
How Long Is the Warranty?
Main unit: 3-year limited warranty. Standard accessories: 1-year limited warranty. See Warranty Policy for coverage and exclusions. AUTOOL smoke leak detectors are sold online and offline in many countries and regions, with after-sales support for setup, accessories, and troubleshooting.
Customer Reviews
Leave A Review
Sven Sutter ✓ Verified Purchase –
I recommend it
This is great! Easy to use! I used a small amount of baby oil. It makes a very good amount of smoke. It connects with clamps to your positive and negative battery cable so it’s totally portable to use outside if you’re not able to work on your car at home. This has helped me find vacuum leaks with ease.
Dany ✓ Verified Purchase –
This smoke detector is really practical.
This smoke detector is really practical. It has a built-in air pump so I don’t need extra tools. It works well for EVAP, intake, exhaust and many other systems, suitable for cars, ATVs and more. Simple to operate and comes with overheat protection. Great tool for auto repair!
Ryan ✓ Verified Purchase –
This smoke leak tester is a must-have for my garage.
This smoke leak tester is a must-have for my garage. The built-in air pump is super convenient, no extra pump needed. It works great on EVAP systems and various vehicle types, easy to operate and very stable. Smart protection functions make it safe to use. Great quality and reliable performance, highly recommend!