AUTOOL SDT102 Vacuum Leak Smoke Machine with Pressure Gauge

LANGUAGE & CURRENCY

AUTOOL SDT102 · Smoke Leak Detector with Pump and Pressure Gauge

Watch Pressure While Tracing Visible Leak Paths

This automotive smoke machine uses a built-in pump to run low-pressure smoke checks without an external compressor. Watch the pressure gauge for changes and follow escaping smoke to the leak path. The compact 12 V unit supports permitted EVAP, vacuum, intake, exhaust, crankcase, sealing, line-fitting, and low-pressure turbo checks.

Built-In Pump, No Shop Air
Pressure-Gauge Feedback
12 V Vehicle-Battery Power
EVAP Service-Tool Compatibility
Permitted Low-Pressure Systems

Key Features

Built-In Pump with an Analog Pressure Gauge

Pressure Gauge Leak Check

Use the pressure gauge to monitor pressure changes and quickly check whether the test line may be leaking.

EVAP Detection

Supports EVAP leak detection and is compatible with American cars from 1996+ when connected with EVAP service tools that match the vehicle test port.

Built-In Air Pump

No external air compressor is required. The built-in pump saves setup time and makes SDT102 easier for DIY and workshop use.

Intake / Exhaust / Vacuum / Low-Pressure Turbo Checks

For vacuum-system diagnostics, SDT102 can be used as a smoke tester for vacuum leaks. It also supports low-pressure testing of intake, exhaust, crankcase, engine sealing areas, line fittings, and low-pressure turbo systems.

EVAP / Vacuum

Supports EVAP and vacuum leak checks when the service access tools and adapters match the vehicle test port.

Intake / Exhaust

Helps find leaks in intake and exhaust systems by filling the test section with smoke for visual inspection.

Crankcase / Oil Seal

It can also check crankcase leaks, oil seals, intercooler air paths, and engine sealing areas under low-pressure conditions.

Fuel Tank / Coolant Tank / Line Fittings

Supports fuel tank, coolant tank, line fittings, and low-pressure turbo system leak checks; do not smoke-test any component that the vehicle or component service procedure excludes.

Overheat + Low-Temperature Protection

Overheat and low-temperature protection help protect the unit. The unit can operate at temperatures down to -20°C.

Compact Interface

The body integrates the power interface, smoke output, oil filler, pressure gauge, handle, and operation controls in a compact structure.

3 Years Warranty Support

Main unit: 3-year warranty. Standard accessories: 1-year warranty. Warranty Policy.

How to Use

Seal, Pressurize, Observe the Gauge, Add Smoke, and Inspect

Step progress1 / 5

Add Testing Oil

Fill 10–15 mL baby oil or liquid paraffin into the detector. Do not overfill.

Safety & Compatibility

Match Pressure and Procedure to the Tested System

12V Power and Built-In Air Pump

Connect SDT102 to a 12V DC vehicle battery and confirm correct polarity before use. The built-in air pump provides the test airflow, so you do not need an external compressor.

Use the Pressure Gauge to Watch Test Pressure

SDT102 outputs less than 10 psi with rated flow above 6 L/min. Watch the gauge for pressure changes in the connected test path, and stay within the pressure allowed by the vehicle or component service procedure.

Testing Oil Is Not Included

Testing oil is not included. Use liquid paraffin or baby oil and add 10–15 mL before use.

Limit Continuous Use to 8 Minutes

Do not run SDT102 continuously for more than 8 minutes. Automatic overheat protection stops operation above 75°C. Let the unit cool before restarting.

Operating Temperature and Hot Surfaces

SDT102 supports operation down to -20°C. The round metal housing can become hot during use, so avoid touching hot surfaces directly.

Do Not Use for Direct A/C Pressure Testing

SDT102 cannot directly pressure-test an automotive A/C system. If a service procedure permits smoke on an isolated A/C line section, follow that procedure and use smoke only as an indirect visual aid.

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 SDT102 is running.

Drain Excess Oil First

Drain excess oil before operation if the unit has been overfilled.

Read Gauge and Indicator Correctly

Use the pressure gauge for pressure changes and the fault indicator for unit status.

Follow Service Pressure Limits

Stay within the pressure limits in the vehicle or component service procedure.

Test Results

Use Pressure and Smoke as Separate Clues

Pressure Changes

Use pressure behavior under the configured, sealed test setup to guide the next inspection, then trace the leak area with visible smoke.

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 Gauge and Air-Supply Options

Comparison of AUTOOL Smoke Leak Detectors
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)	<10 psi machine-rated output; use the target-system procedure.	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	145mm80mm200mm	145mm80mm200mm	180mm102mm143mm	180mm100mm135mm	180mm102mm143mm	180mm100mm135mm	110mm135mm210mm	145mm80mm200mm	295mm295mm207mm	295mm295mm207mm	150mm150mm275mm	350mm250mm300mm
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

Manual / PDF

AUTOOL SDT102 User Manual

Open the PDF manual for SDT102 built-in pump operation, pressure-gauge checks, permitted smoke tests, test-oil handling, safety, maintenance, and troubleshooting.

Download Manual

Package

What’s Included

Main unitIncluded
Power clamp cableIncluded
Smoke output hoseIncluded
Universal airbag adapterIncluded
Empty testing oil refill bottleIncluded
Rubber cone adapterIncluded
User manualIncluded

FAQs

Gauge, Pump, and Smoke Questions

What Testing Oil Should I Use for SDT102?

Testing oil is not included. If dedicated smoke-testing oil is unavailable, use liquid paraffin or baby oil.

How Much Testing Oil Should I Add?

Add 10–15 mL before use. Do not add more than 15 mL at a time. If too much oil is added accidentally, drain some oil out before operation; the extra oil can be reused next time. Refill only when the smoke becomes thin, and drain remaining testing oil before adding fresh oil.

What Should I Check If SDT102 Does Not Produce Smoke?

Power: Confirm a 12 V DC connection with correct polarity.
Oil/temperature: Check 10–15 mL liquid paraffin or baby oil, overheating, and oil condition; never add oil while running.
Escalation: If smoke remains weak, send support photos or a short setup video.

What Systems Can SDT102 Test?

SDT102 supports low-pressure leak checks for EVAP, intake, exhaust, crankcase, vacuum, engine sealing areas, and low-pressure turbo systems. It can also check fuel tanks, coolant tanks, oil seals, intercooler air paths, and line fittings.

Can SDT102 Detect EVAP Leaks?

Yes. AUTOOL smoke leak detectors can test leaks in the EVAP system. SDT102 supports EVAP leak detection, including American cars from 1996+ when connected with EVAP service tools and adapters that match the vehicle test port.

Can SDT102 Directly Test Automotive A/C System Leaks?

No. Automotive A/C systems operate at about 1.7–3.0 MPa output pressure, while SDT102 has rated output pressure below 10 psi. SDT102 cannot directly pressure-test the automotive A/C system for leaks. Use smoke only to help inspect an A/C line section after isolating and pressurizing it according to the service procedure.

How Can SDT102 Help Check an Isolated A/C Line?

First isolate and pressurize the A/C line segment according to the vehicle or A/C service procedure. Then apply smoke near the test section and observe whether escaping airflow disturbs the smoke. If escaping air moves the smoke, inspect that area for a possible leak. This can help locate a leak; it is not a direct A/C pressure test.

Does SDT102 Need an External Air Compressor?

No. SDT102 has a built-in air pump, so no external air compressor is required. It only needs 12V DC vehicle battery power and the correct amount of testing oil.

Can I Adjust the Pressure on SDT102?

SDT102 uses fixed smoke-mode output below 10 psi. If separate Standard and EVAP pressure modes are required, compare SDT208. Use SDT102 only within its specified low-pressure range.

What Accessories Are Included with SDT102?

Included accessories vary by package option. Check the product listing for the exact items included. Testing oil is not included.

How Do AUTOOL Smoke Leak Detector Models Differ?

SDT101 and SDT103 use external air sources and 3.2 kPa / 0.46 psi EVAP pressure.
SDT106 uses a built-in air pump with <12 psi output.
SDT203, SDT205, and SDT205S use <15 psi output, while SDT206 uses <18 psi with two built-in air pumps.
SDT208 provides Standard 35 psi and EVAP 10 psi modes.

Air source, pressure, flow, modes, gauges, and accessories differ by model.

How Long Is the Warranty for SDT102?

Main unit: 3-year warranty. Standard accessories: 1-year warranty. Warranty Policy.

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AUTOOL SDT102 Automotive Smoke Leak Detector with Built-In Air Pump & Pressure Gauge