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AUTOOL DIY Smoke Machine for Vacuum Leaks
AUTOOL DIY Smoke Machine for Vacuum Leaks
AUTOOL DIY Smoke Machine for Vacuum Leaks
AUTOOL DIY Smoke Machine for Vacuum Leaks
AUTOOL DIY Smoke Machine for Vacuum Leaks
AUTOOL DIY Smoke Machine for Vacuum Leaks
AUTOOL DIY Smoke Machine for Vacuum Leaks
AUTOOL DIY Smoke Machine for Vacuum Leaks
AUTOOL DIY Smoke Machine for Vacuum Leaks
AUTOOL DIY Smoke Machine for Vacuum Leaks
AUTOOL DIY Smoke Machine for Vacuum Leaks
AUTOOL DIY Smoke Machine for Vacuum Leaks
AUTOOL DIY Smoke Machine for Vacuum Leaks
AUTOOL DIY Smoke Machine for Vacuum Leaks
AUTOOL DIY Smoke Machine for Vacuum Leaks
  1. AUTOOL DIY Smoke Machine for Vacuum Leaks
  2. AUTOOL DIY Smoke Machine for Vacuum Leaks
  3. AUTOOL DIY Smoke Machine for Vacuum Leaks
  4. AUTOOL DIY Smoke Machine for Vacuum Leaks
  5. AUTOOL DIY Smoke Machine for Vacuum Leaks
  6. AUTOOL DIY Smoke Machine for Vacuum Leaks
  7. AUTOOL DIY Smoke Machine for Vacuum Leaks
  8. AUTOOL DIY Smoke Machine for Vacuum Leaks
  9. AUTOOL DIY Smoke Machine for Vacuum Leaks
  10. AUTOOL DIY Smoke Machine for Vacuum Leaks
  11. AUTOOL DIY Smoke Machine for Vacuum Leaks
  12. AUTOOL DIY Smoke Machine for Vacuum Leaks
  13. AUTOOL DIY Smoke Machine for Vacuum Leaks
  14. AUTOOL DIY Smoke Machine for Vacuum Leaks
  15. AUTOOL DIY Smoke Machine for Vacuum Leaks

AUTOOL DIY Smoke Machine for Vacuum Leaks

(1 customer review)

Price range: US$69.00 through US$429.00

Key Features
  • Visible Leak Tracing
  • Faster Diagnosis
  • Series Setup Options
Key Features
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AUTOOL SDT Series

Product Overview

The AUTOOL SDT series is a full smoke leak detector lineup for automotive vacuum, EVAP, intake, exhaust, fuel line, turbocharger, and pipe leak diagnostics. It includes simple smoke-only models, EVAP-focused low-pressure models, built-in pump models, air + smoke dual-output models, and higher-workload workshop options, helping users choose the right smoke machine based on air source, pressure range, flow, monitoring features, and diagnostic frequency.

EVAP / Vacuum Leak Testing Built-In Or External Air Source Air + Smoke Mode Options 10-15ml Test Oil
10 ModelsSDT50-SDT208
10-15mlTest Oil Volume
35 psiMax SDT208 Mode
75°CProtection Point
How To Choose

How To Choose

Choose your SDT series smoke machine by checking whether you need external-compressor EVAP testing, built-in pump convenience, air + smoke dual output, higher workshop efficiency, or SDT208 dual pressure modes.

Need Simple Smoke Testing?

Choose SDT50, SDT100, SDT106, or SDT203 if you mainly need a smoke-mode leak detector for general automotive pipe, vacuum, intake, exhaust, and fuel system leak checks.

Need EVAP Low-Pressure Testing?

Choose SDT101 or SDT103 for EVAP-focused low-pressure testing around 32mbar. These two models do not have built-in air pumps and must be used with an external air compressor.

Need Built-In Pump Convenience?

Choose SDT60 if you want an EVAP-friendly model with a built-in air pump for easier direct use instead of connecting SDT101 or SDT103 to an external compressor.

Need Air + Smoke Dual Output?

Choose SDT205, SDT205S, SDT206, or SDT208. These models support air mode for pressure checking and smoke mode for visual leak locating.

Need A Busy Workshop Model?

Choose SDT206 for built-in dual air pumps, air + smoke modes, flow monitoring, pressure display, oil drain, and oil level observation. It is better suited to frequent workshop use.

Need Dual Pressure Modes?

Choose SDT208 if you need both 10 psi low-pressure mode and 35 psi high-pressure mode, plus DC12V / 24V input support and higher output flow for flexible diagnostic scenarios.

Product Comparison

Product Comparison

Compare SDT models before choosing the right vacuum leak smoke machine. The key differences are air source type, rated pressure, output flow, air / smoke mode, pressure gauge, flow meter, oil drain valve, oil level gauge, and SDT208 dual pressure support.

SDT101 / SDT103EVAP-focused low-pressure models around 32mbar. They use an external air source and do not include built-in air pumps.
SDT60Built-in air pump model with a pressure gauge, suitable for users who want easier direct smoke testing without an external compressor.
SDT205 / SDT205S / SDT206 / SDT208Support air mode + smoke mode for pressure checking first, then visual smoke leak location.
SDT206Built-in dual air pumps, pressure gauge, flow meter window, flow adjustment knob, oil drain valve, fault indicator, and oil level gauge for high-frequency workshop use.
SDT208Supports DC12V / 24V input, air + smoke modes, 10 psi low pressure mode, 35 psi high pressure mode, and output flow up to 15L/min.
Decision CheckCheck the comparison chart for pump type, pressure range, flow, mode output, gauge options, oil drain, oil level gauge, and compressor requirement before ordering.
AUTOOL SDT series smoke leak detector comparison chart with pressure flow air source and mode output differences Click to enlarge
Specifications

Specifications

Use this compact summary together with the comparison chart. All listed SDT models use low-oxygen smoke generation, 10-15ml test oil filling volume, and high-temperature protection that stops operation above 75°C. The chart lists fast smoke response; actual time to fill a tested line depends on model, pipe volume, sealing condition, and oil condition.

Model Selection Summary
Model Power Input Air Source Rated Pressure Output Flow Best Fit
SDT50 DC12V Built-in air pump <10 psi <5L/min Entry smoke-mode leak checks without pressure gauge.
SDT60 DC12V Built-in air pump <10 psi <5L/min EVAP-friendly built-in pump option with pressure gauge.
SDT101 DC12V / 5A External air source <32mbar >10L/min Low-pressure EVAP testing with external compressor.
SDT103 DC12V / 5A External air source <32mbar >10L/min Low-pressure EVAP testing with external compressor and SDT103-specific flow-meter troubleshooting.
SDT106 DC12V Built-in air pump <12 psi <5L/min Simple built-in pump smoke-mode testing.
SDT203 DC12V Built-in air pump <15 psi <6L/min Smoke-mode testing with pressure gauge, flow meter window, flow adjustment knob, and fault indicator light.
SDT205 DC12V Built-in air pump <15 psi <6L/min Air + smoke dual output with pressure gauge, oil drain valve, and fault indicator light.
SDT205S DC12V Built-in air pump <15 psi <6L/min Air + smoke dual output with pressure gauge, flow meter, adjustment knob, oil drain valve, and fault indicator light.
SDT206 DC12V Built-in dual air pumps <18 psi <6L/min Workshop-focused model with air + smoke modes, pressure gauge, flow meter, oil drain, and oil level gauge.
SDT208 DC12V / 24V Built-in air pump <10 psi / 35 psi <15L/min Dual pressure mode model for flexible low- and high-pressure diagnostic scenarios.
Entry And EVAP Models
SDT50DC12V, built-in air pump, <10 psi, smoke mode.
SDT60DC12V, built-in air pump, <10 psi, pressure gauge.
SDT101 / SDT103DC12V / 5A, external air source, <32mbar, EVAP-focused low-pressure testing.
SDT106 / SDT203Built-in pump smoke-mode models; SDT203 adds pressure and flow monitoring features.
Air + Smoke Models
SDT205Air + smoke modes, pressure gauge, oil drain valve, fault indicator.
SDT205SAir + smoke modes with flow meter, adjustment knob, and oil drain valve.
SDT206Built-in dual pumps, air + smoke modes, flow meter, oil drain, oil level gauge.
SDT208DC12V / 24V, 10 psi / 35 psi dual pressure mode, up to 15L/min output flow.
Key Features

Key Features

The SDT series focuses on visible smoke leak detection, model-specific air source options, dual-mode diagnostics, monitoring functions, protection design, and broad automotive system coverage.

Visible Smoke Leak Detection

SDT smoke machines generate visible smoke to help locate leaks in sealed automotive systems, reducing blind troubleshooting and unnecessary disassembly.

Built-In Or External Air Source

Most SDT models include built-in air pumps. SDT101 and SDT103 are external-air-source models and must be connected to an external air compressor.

Air + Smoke Dual Mode Options

SDT205, SDT205S, SDT206, and SDT208 support air mode and smoke mode, allowing users to check pressure behavior first and then locate leaks visually.

Pressure And Flow Monitoring

Selected models include pressure gauges, flow meter windows, flow adjustment knobs, oil drain valves, and oil level gauges, depending on model configuration.

Protection For Workshop Use

The SDT series stops working above 75°C for high-temperature protection. Related instructions also note low-temperature operation down to -20°C under proper conditions.

Wide Automotive Coverage

Suitable for checking leaks in intake pipes, exhaust pipes, fuel lines, turbochargers, vacuum lines, EVAP systems, and other sealed low-pressure automotive systems.

How It Works

How It Works

AUTOOL SDT smoke leak detectors use low-oxygen smoke generation. Test oil is heated into visible smoke, then the smoke is introduced into the tested system and escapes from leak points.

Heating Element

The internal heating element raises the temperature of mineral oil, baby oil, or liquid paraffin until it reaches smoke-generating conditions.

Low-Oxygen Smoke Generation

Because the intake flow is limited, the low-oxygen environment helps produce thick visible smoke instead of full combustion.

Leak Visualization

Smoke enters the sealed system and escapes through cracks, loose joints, weak seals, or leaking pipes so the user can locate the leak visually.

How To Use

How To Use

Use the SDT series with the correct power supply, 10-15ml baby oil or liquid paraffin, and a properly sealed test system. For SDT101 and SDT103, connect the required external air compressor before testing.

Add Test Oil

Add 10-15ml baby oil or liquid paraffin into the detector before use. Do not overfill, because excessive oil can occupy the internal smoke-generation space and cause abnormal smoke output.

Seal And Connect The Test System

Open the vehicle system or pipe section that needs testing, seal the connection as needed, and connect the smoke hose or suitable adapter to the tested pipeline.

Connect Power And Air Source

Connect the detector to the required power supply. Most models use DC12V; SDT208 supports DC12V / 24V. Connect an external air compressor when using SDT101 or SDT103.

Run Air Or Smoke Mode

Use air mode first on supported models to check pressure behavior, then use smoke mode to introduce smoke and visually locate leak points. Visible smoke response depends on model and sealing condition.

Use Notes

  • SDT101 and SDT103 require an external air compressor.
  • Use baby oil or liquid paraffin as test oil when professional test oil is unavailable.
  • Do not overfill test oil; excessive oil may cause no smoke or liquid spray.
  • Do not run continuously for more than 8 minutes. Let the detector rest between uses.
  • If no smoke appears, drain excess oil and add about 10ml fresh test oil again.
Before You Order And Use

Before You Order And Use

Review oil filling, power supply, compressor requirements, continuous-use limits, hot-surface caution, and unsuitable residential duct testing before operation.

Purchase And Operation Notes

  • Each use only requires about 10-15ml baby oil or liquid paraffin.
  • Testing oil may not be included due to logistics restrictions. Buy liquid paraffin or baby oil locally if needed.
  • Avoid adding excessive test oil, because overfilling may occupy the internal smoke-generation space and prevent normal smoke output.
  • If the source instruction mentions 15-20ml for first use, avoid exceeding the safe internal oil level. If smoke output is abnormal, drain oil and restart with about 10ml fresh oil.
  • Most SDT models require DC12V power. SDT208 supports DC12V / 24V input.
  • Only SDT101 and SDT103 do not have built-in air pumps and require connection to an external air compressor.
  • If you need direct use with a built-in air pump, choose another model such as SDT60.
  • Do not run the detector continuously for more than 8 minutes. Allow rest intervals between uses.
  • Metal parts and heated areas may become hot during operation. Avoid direct contact to prevent burns.
  • Residential AC duct leak testing is not recommended because duct openings usually have poor sealing, which can make smoke testing unreliable.
Related Products

Related Products

Compare related AUTOOL SDT smoke leak detector models before choosing the right built-in pump setup, EVAP support, air / smoke output mode, pressure range, monitoring features, and workshop function.

Questions And Answers

These answers cover SDT model selection, external compressor requirements, air + smoke dual output, workshop model choice, test oil, no-smoke troubleshooting, no-power troubleshooting, SDT103 flow meter issues, smoke stopping after normal use, pressure gauge behavior, and residential AC duct limitations.

Related Guides

Related Guides

Use these related articles to learn more about SDT206 workshop use, air / smoke mode workflows, and SDT model comparison.

Warranty And Contact

Warranty And Contact

For discounts, SDT model selection, test oil confirmation, built-in pump / external compressor questions, no-smoke troubleshooting, no-power troubleshooting, SDT103 flow meter troubleshooting, pressure gauge support, warranty, or replacement parts, contact AUTOOL support.

Pre-Sales And After-Sales Support

Use support if you need help confirming the correct SDT model, pressure mode, external compressor requirement, oil filling amount, power supply, workshop suitability, or troubleshooting steps before replacing parts.

  • SDT model selection and pressure mode confirmation
  • Test oil and 12V / 24V power setup confirmation
  • Built-in pump / external compressor model guidance
  • No-smoke and no-power troubleshooting
  • SDT103 flow meter and pressure-reducing valve troubleshooting
  • Pressure gauge self-check and leak judgment support
  • 3-year warranty and replacement parts support for eligible non-human damage cases
Email Supportsupport@autoolstore.com WhatsApp Support+86 189 2647 7404

Customer Reviews

  1. 5
    (1 customer review)
    100% of customers recommend this product.
    5 Stars100%4 Stars0%3 Stars0%2 Stars0%1 Star0%

  2. Brennen Brinker –

    I really like the AUTOOL smoke leak detector. It has a built-in air pump, reliable quality, and the material feels very thick, not a thin piece of iron sheet. It is much more reliable than the Ancel smoke leak detector I used before. The test oil only requires 15ml of baby oil, and it produces smoke easily!

    0 of 0 found this review helpful
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AUTOOL DIY Smoke Machine for Vacuum Leaks
AUTOOL DIY Smoke Machine for Vacuum Leaks

Price range: US$69.00 through US$429.00

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