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AUTOOL SDT101 EVAP Smoke Machine with Fixed 0.46 PSI Output
US$80.00
Key Features
- Fixed 0.46 PSI Output
- Shop-Air Powered
- EVAP Service Kit
- Smoke in About 5 Seconds
- Fixed 0.46 PSI Output: Built-in pressure control regulates output to 3.2 kPa / 0.46 psi for EVAP-oriented low-pressure testing.
- Shop-Air Powered: Requires an external compressed-air source; rated flow above 10 L/min supports steady workshop smoke testing.
- EVAP Service Kit: Includes an EVAP special connector, valve-core wrench, cone adapter, smoke hose, and 12V power lead for the intended workflow.
- Smoke in About 5 Seconds: Starts producing visible smoke quickly once power, shop air, oil, and the test connection are ready.
- 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 SDT101 · 0.46 PSI External-Air EVAP Smoke Leak Detector
Controlled Low-Pressure Smoke Testing for EVAP Systems
The AUTOOL SDT101 is an EVAP smoke machine for quickly locating low-pressure leaks in EVAP, intake, exhaust, fuel tank, sealing areas, and line fittings. It requires a 12V DC battery and an external air source. Use 10–15 mL liquid paraffin or baby oil as testing oil. Output pressure is regulated to 3.2 kPa / 0.46 psi for EVAP system leak detection.
- 3.2 kPa / 0.46 psi EVAP
- External Air Source
- 5-Second Smoke Output
- Fuel Tank / Intake / Exhaust
12VVehicle Power Requirement
1.6 kgCompact Main Unit
75°C / -20°COverheat / Min. Operating Temp.
3 YearsMain Unit Warranty
Core leak-detection capabilities
Key Features
SDT101 maintains a fixed 3.2 kPa / 0.46 psi output for EVAP-focused smoke testing. It helps locate visible smoke leaks in EVAP, intake, exhaust, fuel-tank, and vehicle-sealing systems. The compact unit includes 3-year warranty support.
3.2 kPa / 0.46 psi EVAP-Safe Pressure
SDT101 uses a built-in pressure controller to fix output pressure at 3.2 kPa / 0.46 psi, helping prevent EVAP lines from being damaged by excessive pressure. The 3.2 kPa / 0.46 psi output pressure is intended for EVAP system testing and low-pressure line leak checks.
Visual Leak Location
Smoke makes small line leaks easier to find by showing where vapor escapes from the tested area.
Smoke Starts in About 5 Seconds
Once the unit is connected and ready, smoke starts in about 5 seconds for visual leak location.
External Air Source Control
Connect a shop air supply or external compressor to the air source interface. SDT101 regulates the supplied air to its fixed low-pressure output for EVAP testing.
EVAP and Fuel-Tank Leak Checks
Use it to confirm whether a malfunction may be caused by a low-pressure line leak before further repair or part replacement. Helps detect EVAP leaks, leaking fuel tank areas, and fuel vapor line issues under low-pressure smoke testing conditions.
Intake, Exhaust, Sealing and Line Fittings
Supports intake system tests, exhaust system tests, throttle leaks, intake air duct gasket leaks, and exhaust leak checks. Can help locate crankcase leaks, front and rear oil seal leaks, intercooler air leaks, valves that do not close fully, and line-fitting leaks. Smoke can help visually identify certain air and water leakage paths where the applicable vehicle or component service procedure permits smoke testing.
Compact Portable Design
The small body, handle, and lightweight design make SDT101 easier to transport, store, and use than larger smoke leak detectors.
Grouped Controls and Connections
The handle, smoke switch, power indicator, air source interface, and smoke output are grouped in one compact layout for quick setup and component identification.
Overheat and Low-Temperature Protection
Automatic overheat protection shuts down power when the temperature exceeds 75°C, and the unit supports operation down to -20°C.
12V Vehicle Coverage
Compatible with 12V cars, motorcycles, snowmobiles, off-road vehicles, ATVs, 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
Follow these five steps to prepare SDT101, connect the test line, and run a smoke leak check.
Step 01
Add Testing Oil
Fill 10–15 mL baby oil or liquid paraffin into the detector before first 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 External Air Source
Connect a shop air supply or external compressor to the air source interface, then open the external airflow before starting the leak test.
Step 04
Connect 12V DC Power
Connect the detector to a 12V DC battery with the power cord clamp, then turn on the power switch.
Step 05
Generate Smoke and Check Leaks
Switch on smoke generation. Once smoke fills the connected test line, inspect for escaping smoke to locate leaks. Use a headlamp if necessary.
External air, fixed EVAP pressure, testing oil, heat, and low-pressure limits
Safety & Compatibility
SDT101 uses an external air source and regulates the test output to a fixed 3.2 kPa / 0.46 psi for EVAP-focused checks. The shop compressor only supplies air to the unit; it does not set the pressure applied to the test line.
External Air and 12V Power Are Required
SDT101 has no built-in air pump. Connect a shop air supply or external compressor to the air inlet, then connect the unit to a 12V DC battery before smoke testing.
Test Output Is Fixed at 3.2 kPa / 0.46 psi
SDT101 regulates the incoming air to a fixed 3.2 kPa / 0.46 psi output for EVAP-focused testing. The compressor’s supply pressure is not the pressure applied directly to the test line.
Use Only for Permitted Low-Pressure Tests
Use SDT101 for EVAP and other permitted low-pressure line checks. Do not use it as a high-pressure leak tester or for direct high-pressure automotive A/C pressure 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 SDT101 continuously for more than 8 minutes. Automatic overheat protection shuts off power above 75°C. Let the unit cool before restarting.
Operating Temperature and Hot Surfaces
SDT101 supports operation down to -20°C. The round metal housing can become hot during use, so avoid touching hot surfaces directly.
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.
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| Specification | Model 1AUTOOL SDT203 | Model 2AUTOOL SDT50 | Model 3AUTOOL SDT60 | Model 4AUTOOL SDT100 | Model 1AUTOOL 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 SDT101 main unit and the accessories shown below. The refill bottle is included empty; testing oil is not included.
- Main Unit1× AUTOOL SDT101 Smoke Leak Detector
- EVAP Connector1× EVAP special connector
- Standard Adapter1× standard cone adapter
- Power Cable1× power cord clamp for 12V DC battery connection
- Valve Tool1× valve core wrench
- Oil Bottle1× testing oil refill bottle; oil not included
- Smoke Hose1× smoke hose
- Documentation1× user manual and SDT101 retail box
Manual, warranty, and setup support
Manual and Downloads
Use the manual below for SDT101 setup, operation, maintenance, and safety guidance.
AUTOOL SDT101 User Manual
Open the PDF manual for SDT101 operation, setup, testing oil, and safety guidance.
Frequently asked questions
Frequently Asked Questions
Does SDT101 Have a Built-In Air Pump?
No. SDT101 does not have a built-in air pump. It must be connected to an external air source or shop air supply before testing.
What Power Supply Does SDT101 Need?
SDT101 requires a 12V DC battery connection. Connect the power cord clamp to a 12V DC vehicle battery before switching on the detector.
Why Is SDT101 Well Suited to EVAP Leak Testing?
SDT101 regulates its output to a fixed 3.2 kPa / 0.46 psi. This low pressure is designed for EVAP system testing and helps avoid excessive pressure on EVAP lines.
What Testing Oil Should I Use?
Use liquid paraffin or baby oil as testing oil. Testing oil is not included, so have the selected oil ready before use.
How Much Testing Oil Should I Add?
Add 10–15 mL testing oil before first use. Do not exceed this range. Fresh oil should be added only when the smoke becomes thin, and no more than 15 mL should be added each time. Before adding fresh oil, pour out the remaining oil in the detector.
Can SDT101 Detect Very Small Line Leaks?
SDT101 helps locate small low-pressure line leaks by filling the test area with smoke and showing where it escapes. Confirm the leak using the service procedure for the system being tested.
What Systems Can SDT101 Test?
SDT101 supports low-pressure smoke checks for EVAP, intake, exhaust, vehicle sealing areas, line fittings, and fuel tank systems. It can also check crankcase leaks, front and rear oil seals, intercooler air leaks, throttle leaks, and intake air duct gasket leaks. Smoke can also help trace valves that do not close fully and certain air or water leak paths.
Can SDT101 Be Used for High-Pressure Systems?
No. SDT101 is a low-pressure EVAP smoke leak detector with 3.2 kPa / 0.46 psi output pressure. Do not use it as a high-pressure leak tester.
How Long Can SDT101 Run Continuously?
Do not operate the detector continuously for more than 8 minutes. Let it rest between uses.
What Should I Do If Overheat Protection Is Triggered?
The detector automatically shuts off power if the internal temperature exceeds 75°C. Stop operation and allow the unit to cool before restarting. Avoid touching the round metal housing because it may be hot.
What Accessories Are Included?
The package includes 1× SDT101 smoke leak detector, 1× EVAP special connector, 1× standard cone adapter, and 1× power cord clamp. It also includes 1× valve core wrench, 1× empty testing oil refill bottle, 1× smoke hose, and 1× user manual. Testing oil is not included.
How Does SDT101 Differ from SDT100?
SDT101 is an EVAP-focused model that requires an external air source and outputs 3.2 kPa / 0.46 psi low pressure. SDT100 instead uses a built-in air pump for users who do not want to connect shop air.
How Do AUTOOL Smoke Leak Detector Models Differ?
SDT101 and SDT103 are EVAP-focused external-air-source models rated at 3.2 kPa. SDT50, SDT60, SDT100, and SDT106 are built-in pump options. SDT203, SDT205, and SDT205S add combinations of pressure gauges, flow indication, Air Mode / Smoke Mode, and flow control depending on model. SDT206 and SDT208 are models with additional control features, with SDT208 providing Standard Mode at 35 psi and EVAP Mode at 10 psi.
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 help, accessory questions, troubleshooting, and replacement part questions.
Customer Reviews
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chrisccarrier226 ✓ Verified Purchase –
Great smoke machine
This is a good value for the quality that you get. Love it and will save lots of money in the long run
Gladys ✓ Verified Purchase –
Great gift for mechanic
Awesome price. Bought for my dad. Hopefully it works great
gv4h ✓ Verified Purchase –
Excellent Smoker and easy to use
Well made. Good price. Puts out a large amount of smoke. Better quality than the paint can types and is priced several hundred dollars less than the professional ones. Very easy to use and to test for leaks on your vehicle. I had never used one before but this made it child’s play to find subtle leaks in my intake system. I’m going to also test for interior wind noise by turning the heater fan on high and smoking along the outside door seals, etc. Plus, it’s a great company with excellent customer service. Pretty rare to find all of these qualities in one product these days. Highly recommend. The only drawback is the odor of the smoke. It stinks and it stays in your nostrils but that’s no fault of this product. It’s the nature of the oil used.