AUTOOL SDT103 EVAP Smoke Machine
US$90.00
- Fixed 0.46 psi EVAP Output
- Visible Adjustable Airflow
- External-Air Operation
- Airbag Adapter Sealing
- Fixed 0.46 psi EVAP Output: Regulate output to 3.2 kPa / 0.46 psi for permitted low-pressure EVAP checks.
- Visible Adjustable Airflow: View current airflow on the meter and adjust smoke delivery with the regulator.
- External-Air Operation: Connect shop air or an external compressor through the air-source interface.
- Airbag Adapter Sealing: Use the airbag adapter to seal compatible test openings during leak checks.
- Compact Grouped Controls: The handle, flow meter, switches, air inlet, and smoke outlet are grouped on a portable body.
- Fixed 0.46 psi EVAP Output: Regulate output to 3.2 kPa / 0.46 psi for permitted low-pressure EVAP checks.
- Visible Adjustable Airflow: View current airflow on the meter and adjust smoke delivery with the regulator.
- External-Air Operation: Connect shop air or an external compressor through the air-source interface.
- Airbag Adapter Sealing: Use the airbag adapter to seal compatible test openings during leak checks.
- Compact Grouped Controls: The handle, flow meter, switches, air inlet, and smoke outlet are grouped on a portable body.
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- 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 SDT103 · External-Air Automotive Smoke Leak Detector with Flow Meter
Control Smoke Flow with Regulated Shop Air
Connect regulated shop air, view current airflow on the meter, and adjust smoke delivery for the selected low-pressure test. SDT103 provides fixed 3.2 kPa / 0.46 psi EVAP output, an airbag adapter for compatible openings, and compact grouped controls for workshop leak tracing when a built-in pump is not required.
- External Shop-Air Input
- 3.2 kPa / 0.46 psi Output
- Visible Airflow Meter
- Adjustable Smoke Delivery
- Airbag Adapter For Openings
Key Features
Adjustable Smoke with a Visible Flow Meter
EVAP-Focused 3.2 kPa / 0.46 psi Testing
SDT103 regulates output to 3.2 kPa / 0.46 psi for low-pressure EVAP smoke testing, helping reduce excessive-pressure risk; confirm that this pressure matches the vehicle procedure before connection.
Visual Airflow Meter
The external flow meter shows the current airflow, making it easier to adjust smoke output and protect the system under test.
Adjustable Smoke Flow
The airflow regulator helps adjust smoke flow for different test lines. Avoid excessive pressure and use the minimum practical airflow for the test.
Quick Smoke Generation
The unit generates smoke quickly to improve leak-check efficiency. Actual line filling time depends on line volume, adapter setup, airflow, and test conditions.
External-Air Setup
SDT103 accepts shop air or an external compressor through its air-source interface, then lets you monitor and adjust airflow at the unit.
Airbag Adapter Sealing Support
The airbag adapter supports test-port sealing during leak checks.
Engine, Lines, Vehicle Sealing and Fuel-Tank Checks
Supports intake system, exhaust system, throttle, intercooler, crankcase, oil seal, and line-fitting leak checks. Can help inspect vehicle sealing areas, fuel-tank leaks, valves that do not close fully, and air or water leak paths for low-pressure smoke checks.
Compact Portable Design
The compact body is designed for carrying, storage, and positioning around the engine bay.
Grouped Controls and Connections
The handle, flow meter, smoke switch, power socket, air source interface, and smoke output are grouped together for quick component identification during setup.
Overheat and Low-Temperature Protection
The protection system shuts down power above 75°C and supports operation down to about -20°C.
3 Years Warranty Support
Main unit: 3-year warranty. Standard accessories: 1-year warranty. Warranty Policy.
How to Use
Regulate Air, Seal, Check Flow, Add Smoke, and Inspect
Add Testing Oil
Fill 10–15 mL baby oil or liquid paraffin into the detector before first use. Do not overfill.
Connect the Test Line
Access the system to be tested and position the detector as needed. Disconnect the line you want to test, then connect it to the smoke output hose or the adapter that matches the selected test port.
Connect External Air Source
Connect shop air or an air compressor to the air source interface. SDT103 does not have a built-in air pump.
Connect 12V DC Power
Connect the detector to a 12V DC vehicle battery, then turn on the power switch to start the detector.
Open Airflow and Start Smoke
Gently turn the airflow regulator valve to open airflow, then switch on smoke generation. Observe the flow meter while testing.
Locate Leaks
The line under test can fill with smoke in about 30 seconds, depending on system volume and setup. Inspect for escaping smoke to locate leaks and use a headlamp if necessary.
Confirm and Retest
Confirm any visible escape path against the system layout, repair the verified leak, and repeat the same controlled test. Continue with the vehicle procedure if no smoke is visible or the fault is intermittent or functional.
Safety & Compatibility
Use Low Pressure and the Correct Vehicle Procedure
External Air and 12V Power Are Required
SDT103 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 vehicle battery before smoke testing.
Test Output Is Fixed at 3.2 kPa / 0.46 psi
SDT103 regulates the incoming air to a fixed 3.2 kPa / 0.46 psi EVAP test output. The compressor supplies air to the unit; its supply pressure is not the pressure applied directly to the test line.
Adjust Airflow Gradually
Start with the airflow regulator near minimum, then increase flow only as needed. Use the flow meter to watch airflow through the connected test line; changing airflow does not increase the unit’s fixed test pressure.
Testing Oil Is Not Included
Testing oil is not included. Use liquid paraffin or baby oil and add 10–15 mL before first use.
Limit Continuous Use to 8 Minutes
Do not run SDT103 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
SDT103 supports operation down to -20°C. The round metal housing can become hot during use, so avoid touching hot surfaces directly.
Use Only for Permitted Low-Pressure Systems
Use SDT103 only where low-pressure smoke testing is permitted. Do not use it for direct high-pressure automotive A/C pressure testing or on systems excluded by the vehicle or component service procedure.
Low-Pressure Systems Only
Use SDT103 only for low-pressure systems that the applicable vehicle or component service procedure permits for smoke testing. Do not use it on high-pressure systems or excluded components.
Trace the Smoke Path
Follow the visible smoke path to inspect the leak area. If no smoke appears, verify isolation, valve state and smoke delivery before changing test methods.
Never Refill While Running
Do not refill testing oil while SDT103 is running.
Drain Excess Oil First
Drain excess oil before operation if the unit has been overfilled.
Regulator Changes Airflow Only
Use the airflow regulator to change flow, not test pressure.
Check Procedure Before Smoke Testing
Follow the vehicle or component service procedure before introducing smoke into a system.
Test Results
Read Airflow and Smoke at the Correct Stage
Airflow Changes
Use airflow change to select the next inspection, then confirm the leak path with smoke or the applicable service test.
Visible Smoke Escape
Check that the outlet is not an intentional opening, then inspect, repair and retest the exact area.
No Visible Smoke
Verify access, isolation, valve state and smoke delivery before moving to functional diagnosis or another test method.
Compare Models
Compare Flow Monitoring and Air Supply
Model Guide
Choose one or more models. SDT103 is selected by default.
| Product Name | SDT50 | SDT60 | SDT100 | SDT101 | SDT102 | SDT103 | SDT106 | SDT203 | SDT205 | SDT205S | SDT206 | SDT208 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Smoke Output & Protection | ||||||||||||
| Working Principle | 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 |
| Test Oil Filling Volume | 10-15ml | 10-15ml | 10-15ml | 10-15ml | 10-15ml | 10-15ml | 10-15ml | 10-15ml | 10-15ml | 10-15ml | 10-15ml | 10-15ml |
| Rated Output Pressure | ＜10psi | ＜10psi | ＜10psi | 3.2Kpa(0.46psi) | ＜10psi | 3.2 kPa (0.46 psi) machine-rated output; use the target-system procedure. | ＜12psi | ＜15psi | ＜15psi | ＜15psi | ＜18psi | <10psi/35psi |
| Rated Output Flow | ＜5L/min | ＜5L/min | ＜5L/min | >10L/min | ＞6L/min | >10L/min | ＜5L/min | ＜6L/min | ＜6L/min | ＜6L/min | ＜6L/min | ＜15L/min |
| High-Temperature Protection | Stops working above 75°C | Stops working above 75°C | Stops working above 75°C | Stops working above 75°C | Stops working above 75°C | Stops working above 75°C | Stops working above 75°C | Stops working above 75°C | Stops working above 75°C | Stops working above 75°C | Stops working above 75°C | Stops working 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 |
| Power & Physical Size | ||||||||||||
| Input Power | DC12V | DC12V | DC12V | DC12V/5A | DC12V | DC12V/5A | DC12V | DC12V | DC12V | DC12V | DC12V | DC12V/24V |
| Rated Power | 50W | 50W | 50W | 48W | 48W | 48W | 50W | 65W | 65W | 65W | 70W | 80W |
| Net Weight (Main Unit) | 1.5kg | 1.6kg | 1.6kg | 1.6kg | 1.6kg | 1.15kg | 3.5kg | 1.7kg | 3.2kg | 3.2kg | 3.5kg | 4.2kg |
| Main Unit Dimensions | 145mm*80mm*200mm | 145mm*80mm*200mm | 180mm*102mm*143mm | 180mm*100mm*135mm | 180mm*102mm*143mm | 180mm*100mm*135mm | 110mm*135mm*210mm | 145mm*80mm*200mm | 295mm*295mm*207mm | 295mm*295mm*207mm | 150mm*150mm*275mm | 350mm*250mm*300mm |
| Monitoring & Controls | ||||||||||||
| Flow Meter Window | × | × | × | × | × | ✓ | × | ✓ | × | ✓ | ✓ | ✓ |
| Pressure Gauge | × | ✓ | × | × | ✓ | × | × | ✓ | ✓ | ✓ | ✓ | ✓ |
| Air Source Type | 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 | Built-in Air Pump | Built-in 2 Air Pump | Built-in Air Pump |
| Mode Output | 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 | × | × | × | × | × | × | × | × | × | × | × | Standard 35 psi / EVAP 10 psi machine modes; use the vehicle procedure. |
| Flow Adjustment Knob | × | × | × | × | × | ✓ | × | ✓ | × | ✓ | ✓ | ✓ |
| Oil Drain Valve | × | × | × | × | × | × | × | × | ✓ | ✓ | ✓ | ✓ |
| Fault Indicator Light | × | × | ✓ | × | ✓ | × | × | ✓ | ✓ | ✓ | ✓ | ✓ |
| Oil Level Gauge | × | × | × | × | × | × | × | × | × | × | ✓ | ✓ |
Manual & Downloads
Use the Manual for Setup and Test Pressure
AUTOOL SDT103 User Manual
Open the PDF manual for SDT103 shop-air connection, flow adjustment, permitted low-pressure smoke tests, adapter setup, test-oil safety, and troubleshooting.
Package
What’s Included
- Main UnitAUTOOL SDT103 smoke leak detector
- Retail BoxSDT103 retail box
- Power Cable12V DC battery clamp cable
- Smoke HoseSmoke output hose
- AdaptersCone adapter, intake airbag adapter, red connector, and short hose
- Oil BottleEmpty oil bottle included; testing oil is not included
- DocumentationAUTOOL SDT103 user manual
FAQs
Flow Meter, EVAP, and Air Questions
Does SDT103 Have a Built-In Air Pump?
No. AUTOOL SDT103 does not have a built-in air pump. It must be connected to an external air source or shop air compressor before use.
What Power Supply Does SDT103 Need?
SDT103 requires a 12V DC vehicle battery power supply. SDT103 input power is 12V DC / 5A.
What Testing Oil Should I Use?
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?
Add 10–15 mL testing oil before first use. Do not exceed this range, and do not add more than 15 mL at one time. If too much oil is added, drain excess oil before operating the unit.
When Should I Refill the Oil?
Refill only when the smoke becomes thin. Before adding fresh oil, pour out the remaining oil in the detector and replace the testing oil regularly.
Can SDT103 Test EVAP Systems?
Yes. SDT103 is designed for EVAP low-pressure smoke leak detection. Its output pressure is 3.2 kPa / 0.46 psi to help prevent EVAP lines from being damaged by excessive pressure.
How Do I Control Smoke Flow?
Before use, gently open the airflow regulator valve. The flow meter shows the current airflow, and the regulator lets you adjust smoke flow for different test lines.
How Long Can SDT103 Run Continuously?
Do not run the detector continuously for more than 8 minutes. Allow the unit to rest between tests.
What Happens If SDT103 Gets Too Hot?
If the unit exceeds 75°C, automatic overheat protection turns off the power. Wait until the unit cools before operating it again. The round metal housing can become hot, so avoid direct contact.
What Systems and Vehicles Can SDT103 Test?
- Systems: EVAP, intake, exhaust, sealing, line fittings, fuel tank, crankcase, oil seals, intercooler, throttle, and intake-duct gasket paths.
- Other visible paths: Valves that do not close fully and permitted air/water leaks. 12 V vehicle types: Cars, motorcycles, snowmobiles, off-road vehicles, ATVs, light trucks, and speedboats.
Can SDT103 Directly Test High-Pressure A/C System Leaks?
No. SDT103 is a low-pressure smoke leak detector and should not be used as a direct high-pressure automotive A/C pressure tester. Use it only where the applicable vehicle or component service procedure permits low-pressure smoke testing.
Why Does Smoke Start Quickly While the Test Line Takes About 30 Seconds to Fill?
The unit begins producing smoke in about 5 seconds, while the line under test may take about 30 seconds to fill, depending on system volume. Actual fill time depends on line volume, adapter sealing, airflow setting, oil condition, and test setup.
What Accessories Are Included?
Check the product listing or your selected package option for the exact items included. The package includes the SDT103 main unit, retail box, 12V DC battery clamp cable, smoke hose, cone adapter, and intake airbag adapter. It also includes an empty oil bottle, red connector, short hose, and user manual. Testing oil is not included.
How Is SDT103 Different from Other AUTOOL Smoke Leak Detector Models?
SDT103 is an EVAP-focused external-air-source model with visual airflow monitoring. Other AUTOOL models vary by air source, gauges, output pressure and flow, and available Air / Smoke modes. Depending on the model, they may also add dual-pressure control, an oil drain valve, a fault indicator, an oil level gauge, or different accessories. Compare the model chart before ordering.
How Long Is the Warranty?
Main unit: 3-year warranty. Standard accessories: 1-year warranty. Warranty Policy.
Quentin Laurie ✓ Verified Purchase –
Works great, lots of smoke.
Works great, lots of smoke. Beware the heated mineral/baby oil will stink up your garage for a long time. So bad I am unable to use this inside my garage. In storage the smell is still so bad, I have to store this outside.
For the money I am satisfied. Still could not find the Evap leak on my 2005 Suburban, but not the fault of the machine. Think the leak may be on the top of the gas tank where I cannot see the evap lines.
The pressure gage is a must. It is missing on other similar priced smoke machines. Tells you there is a leak if the ball does not fall to the bottom. To test, close off the smoke tube and it will go to the bottom
Ethan ✓ Verified Purchase –
Muy practice para encontrar fugas.
Muy practice para encontrar fugas.
Solo la calidad de los caimanes que se conectan a la batería es muy baja se rompen con facilidad.
Omar Gissing ✓ Verified Purchase –
Le produit a été livré dans son emballage d'origine dans ma boîte aux lettres…
Le produit a été livré dans son emballage d’origine dans ma boîte aux lettres, dans les délais normaux. La notice indiquait qu’il s’agissait d’une huile de massage pour bébés, j’ai donc passé commande et reçu le lendemain 1 litre de liquide fumigène pour le tester.