[Start] | v Check LED Switch on Dash ---> (Flashing rapidly?) ---> Check LPE Main Fuse & Ground | No v Listen to Tank Area upon Ignition ---> (No priming sound?) ---> Check Pump Relay & Pump Driver Voltages | Sound Present v Measure Fuel Rail Pressure ---> (Differential pressure < 3 Bar?) ---> Replace/Rebuild Tank Pump | Pressure OK v Inspect Injector Pulse via Oscilloscope ---> (No pulse?) ---> Diagnose LPE Interruption Wiring To narrow down your specific repair needs, tell me:
The complete manual is available on trusted automotive documentation platforms: lpi vialle technical manual top
Symptom: Engine runs on petrol, not switching to LPG → Check LPG tank level (>15% required) → Check LPG pressure (if 0 bar → pump or fuse) → Check vaporizer temp (if <30°C → coolant flow or air in system) [Start] | v Check LED Switch on Dash ---> (Flashing rapidly
Technical manuals like the Vialle LPi LPE-7 Assembly Manual provide strict guidelines for electrical integration: projekt-tech
Located at the end of the fuel rail, this mechanical regulator maintains a constant differential pressure between the fuel rail and the tank. It ensures that fluid pressure never drops below the vaporization point before reaching the injectors. The LPE ECU (Electronic Control Unit)
: The system typically requires a brief priming period to reach is greater than 30 bar pressure before switching from petrol to gas. projekt-tech.com Advanced Functionality (2FUEL) Lpi Vialle Technical Manual
These injectors are calibrated specifically to inject liquid propane directly into the intake port.
