The No.3398 EFI Injector Tester connects to a vehicle's 12V battery and generates four different output signal pulses to assess the condition of an injector. This unit helps determine if an injector is clogged, leaking, or blasting. Additionally, the continuous pulse function can be used to assist in cleaning the injector.

Features:
•    Injector Type: EFI (Electronic Fuel Injection, 12V) / GDI (Gasoline Direct Injection, 5V)
•    Input Power: 12V Vehicle Battery
•    Connector with Insulating sleeve for safe wiring.
•    Working Environment: 0 ~ 40°C; <80%RH
•    Storage Environment: -10 ~ 50°C; <85%RH

Instructions:
1. Switching off the engine, then connect the black battery clip to the negative of the car battery, and the red battery clop to the positive of the car battery.
2. Check the injector type before connecting the tester with the injector. Press and hold the Mode / Injector Type Setting button to select the injector type.
    If it is GDI, the Injector Type Indicator needs to be red color.
    If it is EFI, the Injector Type Indicator needs to be green color.
3. Disconnecting the injector with connector from the vehicle; then connecting the Output Signal Connector with the injector.
4. Short press Mode / Injector Type Setting button to select the output signal pulse mode;
    there are 4 modes of the pulse, and the mode number will be displayed by Mode Indicator.
 
For GDI Injector Test:
Mode 1: If user press PULSE button, the tester generates1 pulse; the width of the pulse is 100ms.
Mode 2: If user press PULSE button, the tester generates 50 pulses; the width of the pulse is 20ms.
Mode 3: If user press PULSE button, the tester generates 100 pulses; the width of the pulse is 15ms.
Mode 4: If user press PULSE button, the tester generates 50 pulse every 2500ms continuously; the width of the pulse is 20ms.
               Press PULSE  button again will stop the signal.

For EFI Injector Test:
Mode 1: If user press PULSE button, the tester generates 1 pulse; the width of the pulse is 250ms.
Mode 2: If user press PULSE button, the tester generates 50 pulses; the width of the pulse is 8ms.
Mode 3: If user press PULSE button, the tester generates 100 pulses; the width of the pulse is 4ms.
Mode 4: If user press PULSE button, the tester generates 50 pulse every 1500ms continuously; the width of the pulse is 8ms.
               Press PULSE button again will stop the signal.

5. After selecting the pulse mode, press the PULSE button to generate the pulse. The Pulse Indicator will flashing as the signal is generating.
User can check the injector ondition by watching the pressure variation or the shape of fuel been spread out.