ALT400 Automotive Leak Detector & Locator
– Comprehensive Leak Detection
– Blazing-Fast Diagnostics
– Built-in Mini Air Compressor
– Advanced Overheat Protection
– User-Friendly Operation
– Wide Vehicle Compatibility
UDIAG ALT400 automotive leak detector is a professional-grade smoke machine tester designed for fast, accurate leak detection in intake, fuel, coolant, exhaust, and EVAP systems. Featuring dual-mode testing (smoke + air pressure) and a built-in air pump, it eliminates the need for external compressors, saving time and cost. Generates dense smoke in under 5 seconds for rapid diagnostics, with auto-shutoff safety and IP54 waterproofing for shop durability. Compatible with cars, light trucks, ATVs, and marine engines, it’s the ultimate tool for emissions testing, preventive maintenance, and repair efficiency.
Features
Comprehensive Leak Detection
Conforming to SAE standards, automotive smoke leak tester is designed for detecting the leakage of automotive pipe systems, such as air intake system, coolant tank system, fuel, exhaust, EVAP systems and so on. Dual-mode detection (smoke + air pressure) for pinpoint accuracy.
Rapid & High-Efficiency Smoke Testing
ALT400 automotive smoke leak detector produces dense smoke in less than 5 seconds, which is immediately visible. It fills the pipe in about 1 minute (with a good seal). It can identify leaks in 3 minutes, which speeds up diagnosis. It can generate smoke quickly and in large quantities, effectively helping technicians improve the efficiency of repairing leaks.
Built-In Air Compressor & Smart Safety
This automotive smoke leak tester has a built-in mini air compressor that can generate smoke on demand. It also has overheat protection (automatically shuts off at 75°C) and anti-freeze design, making it suitable for use in a variety of environments.
User-Friendly Operation
ALT400 smoke machine tester features an intuitive interface and hanging hook for easy operation. Includes a tapered, inflatable fitting for universal connection. Pressure gauge enables quick leak diagnosis.
Upgraded Smoke-Oil Canister
The seamless leak-proof design makes this automotive smoke test machine to prevent oil spills. The optimized heating system ensures stable temperature and safer operation.
Leak Quantification & EVAP Mode
Measures leakage quantity for precise repair assessments. Dedicated EVAP system test mode for emissions compliance checks.
Lightweight & Self-Contained Operation
ALT400 smoke diagnostic leak detector is equipped with an internal air pump and does not require an external compressor, which reduces setup time and confusion. Its portable design is highly suitable for mobile technicians and compact working spaces.
Universal Vehicle Coverage
ALT400 automotive smoke leak detector allow you to test leak-prone systems on a variety of vehicles, including cars, motorcycles, ATVs, snowmobiles, light trucks, and marine engines. Adaptable fittings ensure compatibility with both common and specialty vehicle types.
Advantages
- Comprehensive Leak Detection
- Blazing-Fast Diagnostics
- Built-in Mini Air Compressor
- Advanced Overheat Protection
- User-Friendly Operation
- Wide Vehicle Compatibility
| Voltage | DC12V (Optional AC100-240V Power supply) |
| Current | 6A |
| Test Pressure | EVAP/3-4 KPa |
| Air Flow | 1-10 L/Min |
| Oil Volume | 30 ML |
| Oil Consumption | 0.5 ML/Min |
| Test Hose Length | 2.5 M |
| Power Cable Length | 2.0 M |
Feature & Specification Comparison
Model | ALT550 | ALT500 | ALT400 | ALT300 |
Dual Mode Detection ( Smoke & Air Mode) | √ | √ | √ | √ |
Bulit-in Air Pump | √ | √ | √ | √ |
LED Display | √ | √ | × | × |
Self Protection System | √ | √ | √ | √ |
Pressure Guage | √ | √ | √ | √ |
Adjustable Flowmeter | √ | √ | √ | × |
Oil Level Guage | × | × | √ | √ |
Test Oil Capacity | 30ML | 30ML | 30ML | 30ML |
EVAP Test Pressure | 5-8 KPa | 5-8 KPa | 3-4 KPa | 3-4 KPa |
Turbo Test Pressure | 0.8-1.2 Bra | 0.8-1.2 Bra | × | × |
HD Test Pressure | 2.8 Bra | × | × | × |
Output Flow Rate | 1-25 L/Min; 1-60 L/Min (external air source) | 1-25 L/Min | 1-25 L/Min | 1-25 L/Min |
Time Of Smoke Appearance | EVAP & TURBO: Adjust freely 5/10/15s | Adjust freely 5/10/15s | 5s | 5s |
Power Supply | DC12V/6A | DC12V/6A | DC12V/6A | DC12V/6A |
Wide Vehicles Compatibility | √ | √ | √ | √ |
Applicable Test Systems | Intake System, Exhaust System, Fuel Tank System, Coolant Tank Test, Combustion Chamber Test, Car Sealing Test, Various Pipe Fittings Test, A/C System Leak Test, Air Brake System Test | Intake System, Exhaust System, Fuel Tank System, Coolant Tank Test, Combustion Chamber Test, Car Sealing Test, Various Pipe Fittings Test, Turbo System | Intake System, Exhaust System, Fuel Tank System, Coolant Tank Test, Combustion Chamber Test, Car Sealing Test, Various Pipe Fittings Test | Intake System, Exhaust System, Fuel Tank System, Coolant Tank Test, Combustion Chamber Test, Car Sealing Test, Various Pipe Fittings Test |