LANGUAGE & CURRENCY
AUTOOL SML400 Digital Automotive Smoke Leak Detector
US$999.00
Key Features
- 180-Second Pressure-Hold Test
- Smoke Leak Location
- Pressure + Flow Monitoring
- Adjustable Built-In Air
- 180-Second Pressure-Hold Test: Run the automatic three-minute hold routine and view its countdown and PASS or ERR result on the TFT display.
- Smoke Leak Location: After the air or hold stage, use Smoke mode to inspect an indicated escape path.
- Pressure + Flow Monitoring: View pressure and delivery on separate gauge and flow-meter indications while filling the test volume.
- Adjustable Built-In Air: Use the internal 12 V pump and gradually adjust pressure and flow to the permitted procedure values.
- Expanded Sealing Kit: Cone, inflatable-airbag, EVAP, plug, and BMW oil-cap adapters connect and seal different compatible openings.
- 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 SML400 · TFT Smoke Tester with Pressure-Hold Check
Screen a Timed Hold Result Before Smoke Tracing
This automotive smoke machine runs an automatic 180-second pressure-hold routine and shows its countdown plus configured PASS or ERR result on the TFT screen. Then use Smoke Mode to trace visible escaping smoke. Separate pressure and flow indications, adjustable built-in air, and expanded sealing adapters support the permitted test setup.
- 180-Second Pressure Hold
- TFT PASS / ERR Result
- Built-In Pump, No Shop Air
- Pressure And Flow Feedback
- Expanded Sealing Adapter Kit
Key Features
Three-Minute Pressure Hold with TFT Status
Smoke, Air and Pressure-Hold Modes
Run Air mode or the three-minute pressure-hold routine before Smoke mode, then use visible smoke to inspect an indicated escape path.
Built-In Air Pump
The internal pump supplies test airflow from the 12 V power connection, keeping the pressure and smoke workflow in one unit.
TFT Result Display
The TFT shows the 180-second countdown and the routine’s PASS or ERR result for the configured sealed test.
Pressure Gauge and Flow Meter
Use the gauge for pressure and the flow meter for delivery while filling and checking the selected test volume.
Adjustable Flow and Pressure
Adjust pressure and flow gradually to the values permitted by the vehicle or component procedure.
Oil Level Gauge and Drain Valve
Check the oil level before use and drain aged or excess fluid before refilling or storage.
Overheat Protection
Temperature protection stops operation when the model reaches its protection condition; allow the unit to cool before further use.
Expanded Sealing Adapter Kit
The included sealing and connection accessories support different opening types; verify each adapter against the selected test point.
3 Years Warranty Support
Main unit: 3-year warranty. Standard accessories: 1-year warranty. Warranty Policy.
How to Use
Seal, Run the Hold Check, Add Smoke, and Inspect
Step progress1 / 6
01
Confirm the Procedure
Identify the target system, permitted pressure or threshold, access point, valve state and openings that must be sealed.
02
Prepare the Machine
Inspect the power lead, air connection where required, hose and adapters. Add or confirm only the smoke oil specified by the manual.
03
Connect and Isolate
Use the correct adapter, make a leak-free connection to the selected test point, and isolate normal escape paths according to the vehicle procedure.
04
Run Air or Pressure Mode
Use Air Mode or the pressure-hold routine first and observe the gauge or display under the selected test conditions.
05
Use Smoke to Inspect
Switch to Smoke mode when visual tracing is needed, allow the connected volume to fill, and inspect accessible joints, hoses and seals for escaping smoke.
06
Repair and Retest
Repair the confirmed escape path, repeat the same controlled test, and continue with functional diagnosis if the result is inconclusive or no smoke is visible.
Safety & Compatibility
Use the Display Only with the Specified Test Setup
Match Pressure to the System
The machine rating is not permission to apply its maximum to every vehicle system. Use the OEM or component procedure and the lowest appropriate controlled setting.
Confirm Air and Power
Use a stable DC 12 V supply and the built-in pump. Confirm the selected unit’s maximum output rating before connecting a vehicle system.
Protect People and Components
Work in a dry, well-ventilated area away from flame and hot sources; use eye and hand protection and avoid directing smoke at smoke-sensitive or precision electronic parts.
Inspect Hoses and Adapters
Do not operate with damaged power leads, hoses or adapters. Clean an opening before inserting an inflatable airbag so sharp edges do not puncture it.
Use Approved Smoke Machine Fluid
Follow the model manual for fluid selection, fill level, draining and storage. Do not use water, viscous or corrosive liquids.
Use the Test Result to Guide Inspection
Use the screen result, pressure behavior, and escaping smoke to guide inspection. If the result is unclear, recheck isolation and the test setup.
Test Results
Read PASS or ERR Within the Programmed Test Conditions
Pressure Holds Within the Selected Threshold
The tested volume met the configured condition under this setup. Confirm that the threshold and procedure are correct before treating it as a pass.
Pressure Drops or Exceeds the Threshold
Check the machine self-test, connection and intentional openings, then use smoke to inspect for an escape path.
Smoke Escapes
Confirm the smoke is not leaving a normal open route, repair the verified leak and repeat the same test.
No Smoke Is Visible
Recheck setup and isolation, then investigate valve control, blockage, intermittent behavior or a non-leak cause as the vehicle procedure directs.
Compare Models
Compare Displayed Hold Checks and Smoke Controls
Model Guide
Choose one or more models. SML400 is selected by default.
1 model selected
No model is selected. Choose a model to compare.
| Product Name | SML310 | SML330 | SML400 | SML500 |
|---|---|---|---|---|
| Operating specifications | ||||
| Working Principle | Low Oxygen Combustion | Low Oxygen Combustion | Not stated | Not stated |
| Input Power | DC 12V/5A | DC 12V/5A | DC 12V | Confirm the selected regional power configuration |
| Test Oil Filling Volume | 10ml | 10ml | Not stated | Not stated |
| Rated Output Pressure | ＜15psi | ＜15psi | Not stated | Not stated |
| Rated Output Flow | ＜6L/min | ＜6L/min | Not stated | Not stated |
| Rated Power | 65W | 65W | Not stated | Not stated |
| High-Temperature Protection | Stops working above 75°C | Stops working above 75°C | Not stated | Not stated |
| LOW-Temperature Protection | Confirm the operating-temperature limit for the selected unit. | Confirm the operating-temperature limit for the selected unit. | Not stated | Not stated |
| Hardware and air supply | ||||
| Flow Meter Window | × | × | Not stated | Not stated |
| Net Weight (Main Unit) | 3.2kg | 3.2kg | Not stated | Not stated |
| Main Unit Dimensions | 250mm*160mm*165mm | 250mm*160mm*165mm | Not stated | Not stated |
| Pressure Gauge | Gauge | Gauge | Not stated | Not stated |
| Air Source Type | Built-in pump | Built-in pump | Built-in pump | Confirm the selected unit’s required air connection |
| Modes and controls | ||||
| Mode Output | Air Mode/Smoke Mode | Air Mode/Smoke Mode | Not stated | Not stated |
| Dual Pressure Mode | × | × | Not stated | Not stated |
| Flow Adjustment Knob | × | √ | Not stated | Not stated |
| Oil Drain Valve | × | × | Not stated | Not stated |
| Fault Indicator Light | × | × | Not stated | Not stated |
| Oil Level Gauge | × | × | Not stated | Not stated |
| Setup & Control | ||||
| Control level | Gauge, Air/Smoke | Gauge + flow adjustment, Air/Smoke | TFT + fixed pressure-hold routine + flow controls | Touchscreen configurable pressure-hold and smoke workflow |
Manual & Downloads
Use the Manual for Setup and Test Pressure
AUTOOL SML400 User Manual
Open the PDF manual for SML400 timed pressure-hold tests, TFT results, smoke tracing, pressure and flow adjustment, oil care, safety, and troubleshooting.
Package
What’s Included
- Power Cable1× power cable for vehicle-battery connection.
- Smoke Output Hose1× smoke output hose.
- Conical Adapters2× conical adapters, listed as two separate one-piece entries.
- Universal Airbag Adapters2× universal airbag adapters for sealing suitable intake openings.
- Valve Core Wrench1× valve-core wrench.
- EVAP Connector1× connector for a compatible EVAP service port.
- Oil Filling Bottle1× graduated oil-filling bottle.
- Universal Hard Rubber Plugs1 set for blocking suitable pipelines.
- Red Cap Plugs1 set for sealing suitable hoses.
- Universal Soft Rubber Plug1× soft rubber plug for suitable small pipes.
- BMW Oil-Cap Adapter1 set for a compatible BMW oil-filler connection.
- User Manual1× user manual.
FAQs
Hold Test, Display, and Smoke Questions
What air source does SML400 use?
It has a built-in air pump powered from the machine’s 12 V connection.
Can I use the maximum pressure on an EVAP system?
Do not assume so. Choose pressure from the vehicle procedure; machine capacity and EVAP-safe pressure are different facts.
What does Air or Pressure-Hold mode tell me?
Use the displayed pressure behavior under the configured sealed setup to decide where further leak inspection is needed.
What does Smoke mode add?
Smoke gives a visible tracer for inspecting an escape path after the test volume is connected and isolated correctly.
What if no smoke is visible?
Verify smoke delivery, access, isolation, adapter sealing and valve state. Then continue with the applicable functional diagnosis because blockage, intermittent or non-leak faults may not produce visible smoke.
Are all pictured accessories included?
Use the listed package as the baseline and confirm every item and quantity for the selected version before purchase.
Does a visible leak guarantee the entire repair?
It identifies an area to inspect and confirm. Repair the verified problem and repeat the test, then complete any required vehicle checks.
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