AUTOOL SDT205S Smoke Leak Detector

(43 customer reviews)

US$249.00

Secure checkoutFast supportBulk ready
AUTOOL SDT205S

Product Overview

The AUTOOL SDT205S automotive smoke tester is a DC 12V smoke leak detector with a built-in air pump, air mode, smoke mode, pressure gauge, flow meter window, flow adjustment knob, oil drain valve, and fault indicator light. It is designed for low-pressure leak checks on intake, exhaust, EVAP, crankcase, fuel tank, vehicle sealing, and various pipe fitting systems.

Air & Smoke Mode Built-In Air Pump Pressure Gauge Flow Meter Window 10-15ml Test Oil
<15psiRated Pressure
<6L/minOutput Flow
65WRated Power
3 YearsWarranty
AUTOOL SDT205S smoke leak detector used for intake exhaust crankcase fuel tank and pipe fitting leak tests Click to enlarge
AUTOOL SDT205S smoke leak detector product image with air mode smoke mode pressure gauge and flow meter Click to enlarge
Before You Order And Use

Before You Order And Use

Review the DC 12V power requirement, testing oil rule, airflow regulator, operating time limit, overheat protection, and hot-surface warning before using the SDT205S smoke test machine.

DC 12V Battery Required

The SDT205S smoke leak detector must be connected to a DC 12V car battery before operation.

Testing Oil Not Included

Use liquid paraffin or baby oil as the testing liquid. Testing oil is usually purchased locally due to logistics restrictions.

Add 10-15ml Only

Fill 10-15ml testing oil before use. Do not overfill, because excess oil can reduce the space needed for stable smoke generation.

Open Airflow Regulator

Before use, gently turn the knob to open the airflow regulator valve, then choose the proper air or smoke mode for the test.

Refill Only When Smoke Is Thin

Only add fresh oil when smoke becomes thin. Do not add more than 15ml each time, and drain old oil before refilling.

8-Minute Use Limit

Do not run the detector continuously for more than 8 minutes. Allow the unit to rest between test cycles.

75°C Protection

The intelligent protection system stops operation when the temperature exceeds 75°C. Use the machine again after it cools down.

Avoid Sensitive Parts

During leak detection, keep smoke away from smoke-sensitive parts and avoid applying smoke to unsuitable high-pressure systems.

Hot Surface Warning

The round metal part of the smoke detector can become hot during operation. Avoid direct contact to prevent burns.

Safety Reminder

  • Do not refill testing oil while the smoke tester is running.
  • If too much oil is added accidentally, drain some oil before operation.
  • Replace the detector oil regularly and pour out remaining old oil before adding fresh oil.
  • If overheat protection is triggered, wait until the internal temperature drops before restarting.
Key Features

Key Features

SDT205S combines air mode, smoke mode, built-in air supply, pressure observation, flow control, quick smoke output, portable structure, and smart protection for low-pressure automotive leak diagnostics.

Air Mode And Smoke Mode

The built-in air pump and smoke generator allow the user to switch between air output and smoke output for different diagnostic needs.

Built-In Air Pump

No additional air machine is required. The integrated air pump saves setup time and is suitable for workshop and mobile automotive repair use.

Quick Smoke Output

The smoke generator starts producing smoke quickly, helping reduce diagnostic waiting time. The connected pipe may fill with smoke after a short test period.

External Pressure Gauge

The pressure gauge helps observe pipeline pressure changes. A dropping gauge reading may indicate a leak that needs further inspection.

Flow Meter And Adjustment Knob

The flow meter window and flow adjustment knob help control output for different pipes, reducing the risk of using unsuitable pressure or flow.

Portable Design

The compact body, handle, hook-friendly setup, cone adapter, and airbag adapter help improve portability, storage, and inlet compatibility.

Overheat And Anti-Freeze Protection

The protection system shuts down power when the internal temperature exceeds 75°C and supports low-temperature use under proper conditions.

Oil Drain Valve

The oil drain valve helps remove old testing oil before refilling, supporting cleaner maintenance and more stable smoke output.

3-Year Support

AUTOOL provides 3-year support for eligible non-human damage cases, including help with setup, accessories, and troubleshooting.

Specifications

SDT205S Product Specifications

SDT205S is a DC 12V low-oxygen combustion smoke leak detector with built-in air pump, <15psi rated pressure, <6L/min rated output flow, 65W power, air and smoke mode output, pressure gauge, flow meter window, flow adjustment knob, and oil drain valve.

Core Specifications
Product AUTOOL SDT205S Automotive Smoke Leak Detector
Working Principle Low oxygen combustion
Input Power DC 12V
Test Oil Filling Volume 10-15ml
Recommended Testing Liquid Liquid paraffin or baby oil
Rated Output Pressure <15psi
Rated Output Flow <6L/min
Rated Power 65W
High-Temperature Protection Stops working above 75°C
Net Weight Of Main Unit 3.2kg
Gross Weight / Package Reference 3.7kg
Function Configuration
Air Source Type Built-in air pump
Mode Output Air mode / Smoke mode
Pressure Gauge Yes
Flow Meter Window Yes
Flow Adjustment Knob Yes
Oil Drain Valve Yes
Fault Indicator Light Yes
Oil Level Gauge No
Core Specifications
Working PrincipleLow oxygen combustion
Input PowerDC 12V
Test Oil Filling Volume10-15ml
Rated Output Pressure<15psi
Rated Output Flow<6L/min
Rated Power65W
ProtectionStops above 75°C
Main Unit Weight3.2kg
Function Configuration
Air SourceBuilt-in air pump
Mode OutputAir / Smoke
Pressure GaugeYes
Flow Meter WindowYes
Flow Adjustment KnobYes
Oil Drain ValveYes
Oil Level GaugeNo
How To Use

How To Use

Use SDT205S with a DC 12V battery and 10-15ml liquid paraffin or baby oil. Open the airflow regulator before testing, then select the proper air or smoke mode for low-pressure leak detection.

Add Test Oil

Fill 10-15ml baby oil or liquid paraffin into the detector before use. Do not overfill.

Open The Regulator

Gently turn the knob to open the airflow regulator valve, then prepare the machine for air mode or smoke mode.

Connect The Test Pipe

Open the engine cover, hang the detector if needed, disconnect the pipe that needs testing, and connect it to the detector.

Connect DC 12V Power

Connect the detector to a DC 12V car battery, then turn on the power switch so the detector starts working.

Observe Pressure And Flow

Use the pressure gauge and flow meter window to observe the test. Adjust flow carefully according to the pipe system being tested.

Locate Leaks

After smoke enters the pipe, check visible leak points. Use a headlamp if necessary for easier inspection.

Use Notes

  • Testing oil is not included due to logistics restrictions.
  • Use liquid paraffin or baby oil as testing oil.
  • Only refill when smoke becomes thin.
  • Drain old test oil before adding fresh test oil.
  • Do not operate continuously for more than 8 minutes.
  • Wait for the detector to cool down if overheat protection is triggered.
Applications

Applications

AUTOOL SDT205S is suitable for 12V DC low-pressure leak detection on vehicle pipe systems. It can be used for cars, motorcycles, snowmobiles, off-road vehicles, ATVs, light trucks, and speedboats under proper test conditions.

Automotive Pipe Systems

Use for intake, exhaust, crankcase, fuel tank, vehicle sealing, and various pipe fitting leak checks.

EVAP And Vacuum Checks

Supports EVAP and vacuum-related low-pressure leak tests when proper adapters and ports are used.

Powersports Vehicles

Suitable for motorcycles, ATVs, snowmobiles, and off-road vehicles that use appropriate 12V DC test conditions.

Light Trucks And Speedboats

Can assist with low-pressure pipe system leak checks on light trucks and speedboats where the test conditions are suitable.

AUTOOL SDT205S wide range of applications for cars motorcycles ATVs light trucks snowmobiles and speedboats Click to enlarge
Product Comparison

Product Comparison

Compare SDT205S with other AUTOOL smoke leak detector models before choosing the right air source, pressure range, flow capacity, mode output, flow control, oil drainage, and workshop function.

SDT205S FocusDC12V smoke leak detector with built-in air pump, air mode, smoke mode, pressure gauge, flow meter window, flow adjustment knob, oil drain valve, fault indicator light, <15psi pressure, <6L/min output flow, and 65W power.
Compared With SDT205SDT205S keeps air mode and smoke mode, and adds the flow meter window and flow adjustment knob for easier flow observation and control.
Compared With SDT203SDT205S adds air mode, oil drain valve, and the SDT205S-style flow control configuration while staying in the standard <15psi class.
Compared With SDT206SDT206 adds a built-in dual air pump and oil level gauge. Choose SDT206 if you need those higher-end configuration details.
Compared With SDT208SDT208 supports dual pressure mode with 35psi high pressure and 10psi low pressure, plus higher output flow. Choose SDT208 if dual pressure testing is required.
Decision CheckBefore ordering, compare input power, output pressure, output flow, air source, air/smoke mode, pressure gauge, flow meter window, flow adjustment knob, oil drain valve, and oil level gauge.
AUTOOL smoke leak detector comparison chart including SDT103 SDT106 SDT203 SDT205 SDT205S SDT206 and SDT208 Click to enlarge
Related Products

Related Products

Compare related AUTOOL smoke leak detector models before choosing the right EVAP support, pressure range, built-in pump, air/smoke mode, flow control, and workshop function.

Manual And Downloads

Manual And Downloads

Download the SDT205S manual for setup, testing oil, 12V power, air mode, smoke mode, operation, accessories, and safe-use instructions.

AUTOOL SDT205S Multi-Language User Manual preview Click to enlarge

AUTOOL SDT205S Multi-Language User Manual

Open the PDF manual for SDT205S operation and setup guidance.

Download Manual

Need Setup Confirmation?

Contact AUTOOL Store before ordering if you need to confirm testing oil, 12V power, air mode, smoke mode, EVAP testing, A/C auxiliary testing, accessories, package contents, or model selection.

Questions And Answers

These answers cover testing oil, oil amount, EVAP testing, A/C auxiliary testing, supported systems, power supply, pressure setup, accessories, model differences, and warranty.

Warranty And Contact

Warranty And Contact

For SDT205S setup, testing oil, 12V power, air mode, smoke mode, flow adjustment, EVAP tools, A/C auxiliary testing, package confirmation, accessories, no-smoke troubleshooting, or model selection, contact AUTOOL Store directly.

Pre-Sales And Product Support

Use support if you need help confirming SDT205S testing oil amount, oil refill rules, package contents, 12V battery setup, flow adjustment, EVAP service tools, A/C auxiliary testing limits, smoke output behavior, or comparison with other SDT smoke leak detectors.

  • 3-year warranty for eligible non-human damage cases
  • Testing oil and DC 12V setup confirmation
  • Air mode, smoke mode, pressure gauge, and flow adjustment guidance
  • Packing list and accessory confirmation
  • EVAP tool and A/C auxiliary testing explanation
  • No-smoke troubleshooting and replacement accessory support
  • SDT60 / SDT101 / SDT103 / SDT106 / SDT203 / SDT205 / SDT205S / SDT206 / SDT208 model selection

Customer Reviews

  1. 4.91
    (43 customer reviews)
    98% of customers recommend this product.
    5 Stars93%4 Stars5%3 Stars2%2 Stars0%1 Star0%
  2. Walmart Customer

    item was a godsend! I typically do a rather simple boost leak test on cars prior to ecu recalibration, but with this smoke machine I can REALLY tell if its leaking and from exactly where!

    0 of 0 found this review helpful
  3. C. Hayes

    Works great and made great I would also recommend it to anyone.

    0 of 0 found this review helpful
  4. WB

    Would give five stars, but dies not come with any smoke oil. Works very fast at generating smoke and lots of it.

    0 of 0 found this review helpful
  5. DV

    Very well-built Machine Works real well easy to use what I like the most is just got his own compressor

    0 of 0 found this review helpful
  6. Greg M.

    PRETTY SIMPLE TO USE SO FAR

    0 of 0 found this review helpful
  7. One

    Yes, excellent

    0 of 0 found this review helpful
  8. merkurfan

    I get it, it’s cheap. I am not expecting snapon-otc quality. it’s decent in build but I have some issues.

    the first one, who’s bright idea was it to use a 120 volt power cord for 12 volts? the connection on the tool is the same as a computer power cord. I am sure this will cause problems for someone. I know as I was unboxing it I though “that’s strange, 120 volts?” when I saw the connection on the back of the unit.

    how well does it work? I don’t know. why? because they don’t even include 1 ounce of oil. so now that it is finely here. I still can’t use it.

    0 of 0 found this review helpful
  9. Andrews Tire & Service

    It¡¯s plug and play. Evan leak code. Not only identified quickly but found leaks in line set as well. Very fun.

    0 of 0 found this review helpful
  10. stan posley

    what i liked about it is very easy to hook up and light weight

    0 of 0 found this review helpful
  11. Marco Olguin

    I was impress with the kit that came with this smoker. It was well packaged and nothing appears to be out of ordinary. It doesn’t come with the oil but will get some for the smoker. I will have to report back on how it works.

    0 of 0 found this review helpful
  12. bill luzius

    good stuff

    0 of 0 found this review helpful
  13. Gorge Amin (verified owner)

    Kvalitet byggt och levererar r?k som ska.

    0 of 0 found this review helpful
  14. Gorge

    Quality built and delivers smoke that should.

    0 of 0 found this review helpful
  15. Ray

    Received the goods, thanks

    0 of 0 found this review helpful
  16. Ike Jakubowski

    very good

    0 of 0 found this review helpful
  17. Bradly Lind

    Thank you!?

    0 of 0 found this review helpful
  18. jamie howell

    Works great once I followed the instructions lol…only put the amount it suggests in it, or it don’t work

    0 of 0 found this review helpful
  19. Car Cure

    I recommend AUTOOL

    0 of 0 found this review helpful
  20. Car Cure

    Looking all good

    0 of 0 found this review helpful
  21. Clyde Streich

    many thanks

    0 of 0 found this review helpful
  22. Charles Kozel

    Checking for an evaporator system leak on a vehicle

    0 of 0 found this review helpful
  23. STEPHEN A STERN

    This smoker is a necessity for any auto shop. I’ve used it to find evap leaks and diagnose systems, and find intake leaks. Yes I know it’s only 1/4 the price of a professional name brand, but if you don’t have one at all buy this, it works. Just get the one with the oil level indicator. Honestly I can’t think of one thing wrong about it.

    0 of 0 found this review helpful
  24. Else Gaylord

    working good

    0 of 0 found this review helpful
  25. Mason Barrows

    Works norms

    0 of 0 found this review helpful
  26. Leonel Hagenes

    Normal work

    0 of 0 found this review helpful
  27. Shirley Rowe

    Functioning well

    0 of 0 found this review helpful
  28. TATIANA SANDINO GALINDO (verified owner)

    Compr¨¦ una herramienta en Colombia y fue genial, muy r¨¢pido y seguro.

    0 of 0 found this review helpful
  29. TATIANA SANDINO GALINDO (verified owner)

    Compr¨¦ una herramienta en Colombia y fue genial, muy r¨¢pido y seguro.

    0 of 0 found this review helpful
  30. Diamond Farrell

    Everything is fine

    0 of 0 found this review helpful
  31. Arnoldas Brazi¨±nas (verified owner)

    AUTOOL SDT205S Pipe Leak Locator EVAP System Leakage Analyze & Detect Tool

    0 of 0 found this review helpful
  32. Peggie Kilback

    works as it should

    0 of 0 found this review helpful
  33. Louisa Harvey

    a wonderful device

    0 of 0 found this review helpful
  34. Gilberto Huels

    Fast delivery.

    0 of 0 found this review helpful
  35. Ralph Bouwmeester (verified owner)

    AUTOOL SDT205S Pipe Leak Locator EVAP System Leakage Analyze & Detect Tool

    0 of 0 found this review helpful
  36. Esperanza Deckow

    great product

    0 of 0 found this review helpful
  37. graham kennedy (verified owner)

    great little machine used it a couple times so far and works great!

    0 of 0 found this review helpful
  38. Shanda Gatling

    There are all the necessary adapters, plugs, a container for storing oil. Made a good discount. The seller is worthy. If someone decides to buy, I advise you to take it without hesitation.

    0 of 0 found this review helpful
  39. Tony

    The first time I did it, I poured too much oil and it didn’t smoke, used baby oil. Great

    0 of 0 found this review helpful
  40. Gomez

    I would recommend AUTOOL products to my close friends, it’s just that baby oil is hard to get in our area

    0 of 0 found this review helpful
  41. Tenessa Madison

    Previously I had bought a cheap smoke detector, one of those that looks like an aluminum can. Well it wasn¡¯t a good buy, especially because you also need to set up an air compressor to use it. Worst of all I could never find the Evan leak with it. So I decided to buy a better smoke machine, especially one with a built in air pump. So I bought this and it worked perfectly. The built in pump made it easy to use

    0 of 0 found this review helpful
  42. Owen Bryce

    I¡¯ve use many of these to diagnose vehicles. I like this little smoke machine.

    0 of 0 found this review helpful
  43. Aldrich Virginia

    This smoke tester is a game-changer! The built-in air pump means I don’t need any extra equipment¡ªjust plug it into a 12V battery, and it’s ready to go. It starts producing smoke in under 10 seconds, which really speeds up diagnostics. The compact design makes it easy to carry around the shop, and the included adapters fit most vehicles I work on. Overall, it’s a reliable and efficient tool that’s made leak detection much simpler for me.

    0 of 0 found this review helpful
  44. Bart Waegeman

    The delivery speed is super fast, the response speed to questions is also very fast, and the service is impeccable. The product is easy to operate, the smoke volume is large, and it can be adjusted, which is very convenient to use! It is recommended to try it with baby oil. You only need about 15ml each time. Don’t add more (I added 50ml, there was no room to generate smoke, and I poured out the baby oil to use it normally)

    0 of 0 found this review helpful
Leave A Review

Your email address will not be published. Required fields are marked *

AUTOOL SDT205S automotive smoke tester
AUTOOL SDT205S Smoke Leak Detector

US$249.00

Add to cart This product has multiple variants. The options may be chosen on the product page