Overview
GODIAG C4 Smoke Leak Detector USER MANUAL
1. The GODIAG C4 is designed for:
- Professional auto repair shops to check intake, turbo, exhaust, vacuum pipeline leakage
- Motorcycle, ATV, snowmobile maintenance technicians for air pipeline tightness inspection
- Small boat & yacht service stores for onboard air pipeline leak locating
- Used car inspection personnel to screen air pipeline hidden leakage faults
- Mobile roadside mechanics with limited storage space, no external air compressor
- DIY vehicle owners for daily self-inspection of vehicle air pipelines
2. Supported Key Functions & Features
The GODIAG C4 supports efficient vehicle leak detection with smoke test and air test modes.
Main Functions:
- Smoke test mode for pipeline leak detection
- Air test mode for pressure checking
- Detect leaks in various vehicle pipe systems
- Quickly generate smoke for easier leak identification
- Built-in air pump, no external air compressor required
- Equipped with cooling fan for stable operation
- Overheat protection system for safer use
- Liquid observation window to monitor smoke oil level
- Pressure output monitoring during testing
- Lightweight and portable design
Applicable Testing Areas:
- Intake system
- Vacuum lines
- Turbocharger related pipelines
- Exhaust system
- Other vehicle piping systems
Note: The GODIAG C4 cannot test EVAP systems. For EVAP testing, a dedicated EVAP smoke leak testing kit is required.
3. What Vehicles Does It Support?
The GODIAG C4 is a universal automotive smoke leak detector and does not require vehicle software or ECU communication.
It supports most 12V vehicles, including:
- Passenger cars
- Motorcycles
- Snowmobiles
- ATVs
- Light trucks
- Boats
Compatible with vehicles from various brands, including but not limited to:
- BMW
- Mercedes Benz
- Volkswagen
- Audi
- Toyota
- Honda
- Ford
- GM
- Hyundai
- Kia
- Nissan
- Mazda
- Subaru
- Other 12V vehicles
Supported systems depend on the vehicle pipeline structure and testing requirements.
4. Please Note the Following Limitations
- CANNOT test vehicle EVAP fuel vapor recovery system, dedicated test equipment is required for EVAP inspection
- Only detects air pipeline gas leakage, unable to test engine oil, coolant, hydraulic liquid seepage
- Not compatible with 24V heavy-duty trucks, large construction machinery and industrial high-pressure pipelines
- No function for ECU diagnosis, fault code reading, key programming or vehicle electronic maintenance
- Not suitable for high-pressure industrial pipeline detection (max flow rate 15L/min)
- Smoke oil is consumable and not included in the standard package
- Cannot detect air conditioning refrigerant leakage
- Must follow 10-minute single working cycle to avoid triggering overheat protection
5. Hardware Accessories & Licensing Requirements
- Authorization & Activation: No registration, activation code or annual subscription fees; plug-and-play directly out of box
- Mandatory Power Source: External 12V vehicle battery (power cable with clamps included)
- Separately Purchased Consumables: Special smoke oil for leak tester
- No extra host, mobile phone or computer needed for daily testing
- Matching adapters are pre-installed in the package for mainstream pipeline interfaces
6. GODIAG C4 Specification
- Input Voltage: DC 12V / 6A
- Air Flow Rate: 0–15L/Min, rated about 10L/Min
- Smoke Oil Tank Capacity: 30ml
- Built-in Configuration: Air pump, cooling fan, overheat protection, pressure gauge, oil viewing window
- Test Hose Length: 1.8m
- Power Cable Length: 1.6m
- Single Continuous Working Time: Max 10 minutes per cycle
- Overall Dimension: 350 × 130 × 240mm
- Gross Weight: 2.5KG
- Structure Design: Reserved hanging hole for convenient placement
7. Software Update
- Update Property: Pure physical hardware testing equipment without built-in firmware, database or operating software
- Update Cost: N/A, no online upgrade function exists
- Free Update Term: N/A, no software iteration or version upgrade needed
8. Global Version
- Full unrestricted global version without regional lock, usable for vehicle maintenance in all countries worldwide
- Hardware physical test only, no regional data or brand limitation
9. Warranty
- 12-month official hardware warranty covering factory manufacturing defects from delivery date
- Free text guidance for equipment assembly, oil filling and standard test procedures
- Damage from wrong power connection, overfilled smoke oil, long-time continuous operation, water immersion or unauthorized disassembly is not covered by warranty
10. Package List
1pc x Main Unit
1pc x Inflatable Adaptor
1pc x Power Cords
1pc x Smoke Tube
1pc x Intake Adaptor Core
1pc x User Manual
1pc x Certification
How to Use it?
Preparation
1.Mount the hook to the D screw hole.
2.Plug the power cords in the G socket on side of main unit. Red to red, black to black.
3.Mount the smoke tube to the H vent on the main unit.
4.Unscrew the E cap and fill amount of smoke oil and view the oil level through the F window make sure the oil within the rank of scale.
Note: Too much oil will inundate the hydro-cylinder and too less oil will make less smoke.
Test Run
1.Connect 12V vehicle battery with the clamps on the Power Cords. The Power Indicator will be ON and the unit will start generating air pressure.
Note: red clamp to positive (+), and black clamp to negative (-).
2.Block off the smoke nozzle on the Smoke Tube with fingertip, the Pressure Gauge will indicate the real time output pressure.
3.Switch on the smoke mode switch, the smoke mode indicator will be ON. The unit will start producing smoke.
Note: The equipment will be in self-protection state after a long working time to avoid the smoke maker overheated, the B indicator light will be off. And the equipment will stop making smoke, until the temperature comes to safety level. Users can cool the equipment with the air pump. Do not fill oil while working.