{"id":59840,"date":"2025-08-29T03:05:51","date_gmt":"2025-08-29T03:05:51","guid":{"rendered":"https:\/\/shop.autooltech.com\/?post_type=product&p=59840"},"modified":"2026-05-15T06:42:02","modified_gmt":"2026-05-15T13:42:02","slug":"autool-diy-smoke-machine-for-vacuum-leaks","status":"publish","type":"product","link":"https:\/\/autoolstore.com\/sl\/product\/autool-diy-smoke-machine-for-vacuum-leaks\/","title":{"rendered":"AUTOOL DIY Smoke Machine for Vacuum Leaks"},"content":{"rendered":"
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AUTOOL SDT Series<\/div>\r\n

Product Overview<\/h2>\r\n

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.<\/p>\r\n

EVAP \/ Vacuum Leak Testing<\/span> Built-In Or External Air Source<\/span> Air + Smoke Mode Options<\/span> 10-15ml Test Oil<\/span><\/div>\r\n
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10 Models<\/span>SDT50-SDT208<\/span><\/div>\r\n
10-15ml<\/span>Test Oil Volume<\/span><\/div>\r\n
35 psi<\/span>Max SDT208 Mode<\/span><\/div>\r\n
75\u00b0C<\/span>Protection Point<\/span><\/div>\r\n<\/div>\r\n<\/div>\r\n<\/section>\r\n
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How To Choose<\/div>\r\n

How To Choose<\/h2>\r\n

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.<\/p>\r\n<\/div>\r\n

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Need Simple Smoke Testing?<\/h3>\r\n

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.<\/p>\r\n<\/article>\r\n

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Need EVAP Low-Pressure Testing?<\/h3>\r\n

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.<\/p>\r\n<\/article>\r\n

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Need Built-In Pump Convenience?<\/h3>\r\n

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.<\/p>\r\n<\/article>\r\n

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Need Air + Smoke Dual Output?<\/h3>\r\n

Choose SDT205, SDT205S, SDT206, or SDT208. These models support air mode for pressure checking and smoke mode for visual leak locating.<\/p>\r\n<\/article>\r\n

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Need A Busy Workshop Model?<\/h3>\r\n

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.<\/p>\r\n<\/article>\r\n

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Need Dual Pressure Modes?<\/h3>\r\n

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.<\/p>\r\n<\/article>\r\n<\/div>\r\n<\/section>\r\n

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Product Comparison<\/div>\r\n

Product Comparison<\/h2>\r\n

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.<\/p>\r\n

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SDT101 \/ SDT103EVAP-focused low-pressure models around 32mbar. They use an external air source and do not include built-in air pumps.<\/strong><\/div>\r\n
SDT60Built-in air pump model with a pressure gauge, suitable for users who want easier direct smoke testing without an external compressor.<\/strong><\/div>\r\n
SDT205 \/ SDT205S \/ SDT206 \/ SDT208Support air mode + smoke mode for pressure checking first, then visual smoke leak location.<\/strong><\/div>\r\n
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.<\/strong><\/div>\r\n
SDT208Supports DC12V \/ 24V input, air + smoke modes, 10 psi low pressure mode, 35 psi high pressure mode, and output flow up to 15L\/min.<\/strong><\/div>\r\n
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.<\/strong><\/div>\r\n<\/div>\r\n<\/div>\r\n
\"AUTOOL Click to enlarge<\/span><\/figure>\r\n<\/div>\r\n<\/section>\r\n
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Specifications<\/div>\r\n

Specifications<\/h2>\r\n

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\u00b0C. The chart lists fast smoke response; actual time to fill a tested line depends on model, pipe volume, sealing condition, and oil condition.<\/p>\r\n<\/div>\r\n

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Model Selection Summary<\/td>\r\n<\/tr>\r\n
Model<\/td>\r\nPower Input<\/td>\r\nAir Source<\/td>\r\nRated Pressure<\/td>\r\nOutput Flow<\/td>\r\nBest Fit<\/td>\r\n<\/tr>\r\n
SDT50<\/td>\r\nDC12V<\/td>\r\nBuilt-in air pump<\/td>\r\n<10 psi<\/td>\r\n<5L\/min<\/td>\r\nEntry smoke-mode leak checks without pressure gauge.<\/td>\r\n<\/tr>\r\n
SDT60<\/td>\r\nDC12V<\/td>\r\nBuilt-in air pump<\/td>\r\n<10 psi<\/td>\r\n<5L\/min<\/td>\r\nEVAP-friendly built-in pump option with pressure gauge.<\/td>\r\n<\/tr>\r\n
SDT101<\/td>\r\nDC12V \/ 5A<\/td>\r\nExternal air source<\/td>\r\n<32mbar<\/td>\r\n>10L\/min<\/td>\r\nLow-pressure EVAP testing with external compressor.<\/td>\r\n<\/tr>\r\n
SDT103<\/td>\r\nDC12V \/ 5A<\/td>\r\nExternal air source<\/td>\r\n<32mbar<\/td>\r\n>10L\/min<\/td>\r\nLow-pressure EVAP testing with external compressor and SDT103-specific flow-meter troubleshooting.<\/td>\r\n<\/tr>\r\n
SDT106<\/td>\r\nDC12V<\/td>\r\nBuilt-in air pump<\/td>\r\n<12 psi<\/td>\r\n<5L\/min<\/td>\r\nSimple built-in pump smoke-mode testing.<\/td>\r\n<\/tr>\r\n
SDT203<\/td>\r\nDC12V<\/td>\r\nBuilt-in air pump<\/td>\r\n<15 psi<\/td>\r\n<6L\/min<\/td>\r\nSmoke-mode testing with pressure gauge, flow meter window, flow adjustment knob, and fault indicator light.<\/td>\r\n<\/tr>\r\n
SDT205<\/td>\r\nDC12V<\/td>\r\nBuilt-in air pump<\/td>\r\n<15 psi<\/td>\r\n<6L\/min<\/td>\r\nAir + smoke dual output with pressure gauge, oil drain valve, and fault indicator light.<\/td>\r\n<\/tr>\r\n
SDT205S<\/td>\r\nDC12V<\/td>\r\nBuilt-in air pump<\/td>\r\n<15 psi<\/td>\r\n<6L\/min<\/td>\r\nAir + smoke dual output with pressure gauge, flow meter, adjustment knob, oil drain valve, and fault indicator light.<\/td>\r\n<\/tr>\r\n
SDT206<\/td>\r\nDC12V<\/td>\r\nBuilt-in dual air pumps<\/td>\r\n<18 psi<\/td>\r\n<6L\/min<\/td>\r\nWorkshop-focused model with air + smoke modes, pressure gauge, flow meter, oil drain, and oil level gauge.<\/td>\r\n<\/tr>\r\n
SDT208<\/td>\r\nDC12V \/ 24V<\/td>\r\nBuilt-in air pump<\/td>\r\n<10 psi \/ 35 psi<\/td>\r\n<15L\/min<\/td>\r\nDual pressure mode model for flexible low- and high-pressure diagnostic scenarios.<\/td>\r\n<\/tr>\r\n<\/tbody>\r\n<\/table>\r\n<\/div>\r\n
\r\nEntry And EVAP Models<\/summary>\r\n
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SDT50DC12V, built-in air pump, <10 psi, smoke mode.<\/strong><\/div>\r\n
SDT60DC12V, built-in air pump, <10 psi, pressure gauge.<\/strong><\/div>\r\n
SDT101 \/ SDT103DC12V \/ 5A, external air source, <32mbar, EVAP-focused low-pressure testing.<\/strong><\/div>\r\n
SDT106 \/ SDT203Built-in pump smoke-mode models; SDT203 adds pressure and flow monitoring features.<\/strong><\/div>\r\n<\/div>\r\n<\/details>
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SDT205Air + smoke modes, pressure gauge, oil drain valve, fault indicator.<\/strong><\/div>\r\n
SDT205SAir + smoke modes with flow meter, adjustment knob, and oil drain valve.<\/strong><\/div>\r\n
SDT206Built-in dual pumps, air + smoke modes, flow meter, oil drain, oil level gauge.<\/strong><\/div>\r\n
SDT208DC12V \/ 24V, 10 psi \/ 35 psi dual pressure mode, up to 15L\/min output flow.<\/strong><\/div>\r\n<\/div>\r\n<\/details><\/div>\r\n<\/section>\r\n
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Key Features<\/div>\r\n

Key Features<\/h2>\r\n

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.<\/p>\r\n<\/div>\r\n

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Visible Smoke Leak Detection<\/h3>\r\n

SDT smoke machines generate visible smoke to help locate leaks in sealed automotive systems, reducing blind troubleshooting and unnecessary disassembly.<\/p>\r\n<\/article>\r\n

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Built-In Or External Air Source<\/h3>\r\n

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.<\/p>\r\n<\/article>\r\n

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Air + Smoke Dual Mode Options<\/h3>\r\n

SDT205, SDT205S, SDT206, and SDT208 support air mode and smoke mode, allowing users to check pressure behavior first and then locate leaks visually.<\/p>\r\n<\/article>\r\n

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Pressure And Flow Monitoring<\/h3>\r\n

Selected models include pressure gauges, flow meter windows, flow adjustment knobs, oil drain valves, and oil level gauges, depending on model configuration.<\/p>\r\n<\/article>\r\n

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Protection For Workshop Use<\/h3>\r\n

The SDT series stops working above 75\u00b0C for high-temperature protection. Related instructions also note low-temperature operation down to -20\u00b0C under proper conditions.<\/p>\r\n<\/article>\r\n

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Wide Automotive Coverage<\/h3>\r\n

Suitable for checking leaks in intake pipes, exhaust pipes, fuel lines, turbochargers, vacuum lines, EVAP systems, and other sealed low-pressure automotive systems.<\/p>\r\n<\/article>\r\n<\/div>\r\n<\/section>\r\n

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How It Works<\/div>\r\n

How It Works<\/h2>\r\n

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.<\/p>\r\n<\/div>\r\n

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Heating Element<\/h3>\r\n

The internal heating element raises the temperature of mineral oil, baby oil, or liquid paraffin until it reaches smoke-generating conditions.<\/p>\r\n<\/article>\r\n

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Low-Oxygen Smoke Generation<\/h3>\r\n

Because the intake flow is limited, the low-oxygen environment helps produce thick visible smoke instead of full combustion.<\/p>\r\n<\/article>\r\n

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Leak Visualization<\/h3>\r\n

Smoke enters the sealed system and escapes through cracks, loose joints, weak seals, or leaking pipes so the user can locate the leak visually.<\/p>\r\n<\/article>\r\n<\/div>\r\n<\/section>\r\n

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How To Use<\/div>\r\n

How To Use<\/h2>\r\n

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.<\/p>\r\n<\/div>\r\n

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Add Test Oil<\/h3>\r\n

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.<\/p>\r\n<\/article>\r\n

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Seal And Connect The Test System<\/h3>\r\n

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.<\/p>\r\n<\/article>\r\n

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Connect Power And Air Source<\/h3>\r\n

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.<\/p>\r\n<\/article>\r\n

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Run Air Or Smoke Mode<\/h3>\r\n

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.<\/p>\r\n<\/article>\r\n<\/div>\r\n

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Use Notes<\/h3>\r\n