AUTOOL SDT50 Automotive Smoke Leak Detector with Built-In Air Pump
US$85.00
- Multi-System Visual Checks
- Built-In Air Pump
- Smoke in About 5 Seconds
- -20°C + 75°C Protection
- Multi-System Visual Checks: Trace leaks in permitted intake, exhaust, fuel-tank, crankcase, sealing, line-fitting, and coolant-tank paths.
- Built-In Air Pump: Run smoke leak checks in different locations without an external air supply.
- Smoke in About 5 Seconds: Start producing smoke in about five seconds for visual leak location.
- -20°C + 75°C Protection: Operate down to -20°C with automatic power-off at 75°C.
- Portable 1.5 kg Body: Carry and store the compact 1.5 kg detector for workshop, mobile, or DIY checks.
- Multi-System Visual Checks: Trace leaks in permitted intake, exhaust, fuel-tank, crankcase, sealing, line-fitting, and coolant-tank paths.
- Built-In Air Pump: Run smoke leak checks in different locations without an external air supply.
- Smoke in About 5 Seconds: Start producing smoke in about five seconds for visual leak location.
- -20°C + 75°C Protection: Operate down to -20°C with automatic power-off at 75°C.
- Portable 1.5 kg Body: Carry and store the compact 1.5 kg detector for workshop, mobile, or DIY checks.
- 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 SDT50 · Compact Smoke Leak Detector with Built-In Pump
Carry Self-Contained Smoke Testing Between Bays
Use this automotive smoke leak detector for permitted low-pressure checks in different locations without an external air supply. The built-in pump starts producing smoke in about five seconds, while the compact 1.5 kg body supports visual tracing across approved intake, exhaust, fuel-tank, crankcase, sealing, line-fitting, and coolant-tank paths.
- Built-In Pump, No Shop Air
- About 5-Second Smoke Start
- 1.5 kg Main Unit
- Permitted Low-Pressure Systems
- Cold And Overheat Protection
Key Features
Portable Built-In Air and Smoke Generation
Smoke Starts in About 5 Seconds
Smoke generation starts in about 5 seconds, helping users locate leaks sooner.
Built-In Air Pump
No external air supply is required. The built-in pump keeps setup simple for testing in different locations.
Intake / Exhaust / Fuel Tank / Crankcase Leak Checks
Supports checks for crankcase, oil seal, intercooler air, throttle valve, intake manifold, exhaust, fuel tank, line fittings, and coolant tank.
Lightweight and Portable
The SDT50 smoke leak detector weighs only 1.5 kg, takes up little storage space, and is easy to carry for mobile diagnostics.
High / Low Temperature Protection
The unit automatically powers off at 75°C and supports operation down to -20°C.
Controls & Connections
The filling port, smoke indicator switch, hook port, power socket, and smoke outlet are grouped on the unit for quick identification during setup and leak testing.
3 Years Warranty Support
Main unit: 3-year warranty. Standard accessories: 1-year warranty. Warranty Policy.
How to Use
Add Oil, Connect, Power, Inspect, and Retest
Add Testing Oil
Fill 10–15 mL baby oil or liquid paraffin into the detector before first use. Do not exceed this range.
Connect the Test Line
Access the system to be tested and position the detector near the test area. Disconnect the line you want to test, then connect it to the smoke hose.
Power On
Connect the detector to a 12V DC battery. Confirm that the smoke hose and test line are connected securely, then turn on the power switch.
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.
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
Confirm System Pressure, Ventilation, and Connections
12V Power and Built-In Air Pump
The built-in pump supplies test airflow after SDT50 is connected to a 12V DC battery.
Add 10–15 mL of Testing Oil
Use liquid paraffin or baby oil as testing oil. Add 10–15 mL before first use and do not exceed 15 mL at one time.
Limit Continuous Use to 8 Minutes
Do not run SDT50 continuously for more than 8 minutes. If the internal temperature exceeds 75°C, the unit shuts off automatically. Let it cool before restarting.
Operating Temperature and Hot Surfaces
SDT50 supports operation down to -20°C. The round metal housing can become hot during use, so avoid touching hot surfaces directly.
Check Connections Before Starting Smoke
Before starting smoke, make sure the smoke hose and test line are connected securely. Follow the vehicle or component service procedure, and do not introduce smoke into any system where smoke testing is not permitted.
Use Smoke to Locate the Leak
Use visible smoke to locate the leak area, then repair and retest. If no smoke appears, recheck isolation, flow, and the test setup before continuing.
Never Refill While Running
Do not refill testing oil while SDT50 is running.
No Pressure or Airflow Measurement
Do not use SDT50 to measure pressure or airflow.
Cool Before Restarting
Let the unit cool before restarting after overheat protection is triggered.
Avoid Hot Metal Housing
Avoid touching the metal housing when it is hot.
Compare Models
Compare Compact Smoke Leak Detectors
Model Guide
Choose one or more models. SDT50 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 | <10 psi machine-rated output; use the target-system procedure. | ＜10psi | ＜10psi | 3.2Kpa(0.46psi) | ＜10psi | 3.2Kpa(0.46psi) | ＜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 SDT50 User Manual
Open the PDF manual for SDT50 built-in pump operation, permitted low-pressure smoke tests, system connections, test-oil handling, safety, maintenance, and troubleshooting.
Package
What’s Included
- Main UnitAUTOOL SDT50 Smoke Leak Detector
- Power Cable12V battery clamp cable
- Smoke HoseSmoke output hose
- Filling AccessoriesFunnel and filling bottle
- HookHanging hook
- DocumentationUser manual
- Testing OilNot included; use liquid paraffin or baby oil
FAQs
Power, Pump, and Smoke Questions
Does SDT50 Need an External Air Pump?
No. AUTOOL SDT50 has a built-in air pump, so it does not require a separate air supply or extra air pump for normal smoke leak detection.
What Testing Oil Should I Use?
Liquid paraffin and baby oil are both acceptable testing oils for SDT50. Replace the testing oil regularly, and drain remaining old oil before adding fresh oil.
How Much Oil Should I Add?
Fill 10–15 mL oil before first use. Do not exceed this range. Fresh oil can be added only when smoke becomes thin, and do not add more than 15 mL each time.
What Power Supply Does SDT50 Need?
SDT50 must be connected to a 12V DC battery and is designed for 12V DC vehicle leak checks.
How Long Can SDT50 Run Continuously?
Do not run the detector continuously for more than 8 minutes. Allow the unit to rest between operating cycles.
Why Did the Unit Shut Off Automatically?
If the temperature exceeds 75°C, automatic overheat protection turns off the power. Let the unit cool before restarting.
Is Any Part of the Detector Hot During Operation?
Yes. The round metal housing can become hot during operation. Avoid direct contact to prevent burns.
Should I Avoid Any Parts During Leak Detection?
Yes. Do not introduce smoke into any component or system that the vehicle or component service procedure excludes from smoke testing.
How Does SDT50 Differ from Other AUTOOL Smoke Leak Detectors?
- SDT50: Built-in pump, Smoke Mode, <10 psi, <5 L/min, 50 W, 1.5 kg.
- Add pressure monitoring: SDT60.
- External-air EVAP: SDT101/103.
- Separate Air + Smoke modes: SDT205/205S/206/208; SDT208 also provides 35 psi Standard and 10 psi EVAP.
Tim Hendry ✓ Verified Purchase –
Good smoke effect
Very good quality, better than other brands I have used before. This smoke leak detector has a built-in air pump. It is small and easy to carry. I can use it easily. The smoke effect is good. A lot of smoke is produced in 20 seconds. I use baby oil.
Otto Sam ✓ Verified Purchase –
Pipe inspection is very useful.
Pipe inspection is very useful. Although it is very small, it has a built-in air pump, so it can be used for inspection at any time without the need for an additional air source, providing greater convenience. I am very satisfied with it.
David ✓ Verified Purchase –
The smoker is a great product, portable and lightweight, I used the Johnson's…
The smoker is a great product, portable and lightweight, I used the Johnson’s baby oil they recommended to go with it, it’s an amazing combo, but the smoke comes out very well, I have a repair tool sales store, can I resell it please? Please contact me, thanks!