Lpi Vialle Technical Manual Top Jun 2026

System switched back to gasoline or is completely powered down. System Fault Code

Standard LPG systems rely on an engine-bay regulator to vaporize fuel using engine coolant. The Vialle LPi system eliminates the regulator entirely. Instead, an integrated fuel pump submerged within the LPG tank maintains the fuel under high pressure throughout the entire fuel loop.

Leaking LPi injector dripping fuel into the manifold after shutdown.

The is more than a book; it is the combined knowledge of Vialle’s Dutch and Australian engineering teams. Whether you are troubleshooting a P0190 pressure code, replacing a stepper motor on the tank valve, or flashing the ECU with new injector trim tables, this manual provides the safety, accuracy, and speed required for professional repair. lpi vialle technical manual top

: The gauge features a vertical stack of five LEDs. The top 4 green LEDs represent increments of fuel capacity (Full down to 25%), while the bottom red LED signals a critical low-gas warning or an empty tank. Fuel Source Triangle : Solid Red : The engine is running strictly on petrol.

Detailed diagrams and full service procedures can be found in the following authoritative documents:

When a system fails to switch to gas, experiences a drop in performance, or triggers a check engine light, mechanics should reference the structured troubleshooting protocols found in the Vialle LPG System Help Guide : 1. Pressure Loss & Low-Pressure Petrol Cutback System switched back to gasoline or is completely

The "brain" of the system (common versions include LPE-7 ) which manages the switching between fuels and regulates injection duration.

Interfaces with the vehicle's original sensors (crankshaft, throttle position) to precisely meter fuel based on engine load.

Heavy engine bogging under high loads, sudden switching back to petrol mode, or loud whining noises coming from the LPG tank area. Instead, an integrated fuel pump submerged within the

Switch the system to LPG mode to turn the pump on. The pressure reading must immediately rise by 3.0 to 5.0 bar above the static tank pressure baseline . If the pressure increases by less than 2.0 bar, the pump cannot keep the propane in a pure liquid state inside the hot engine bay. This shortfall will cause vapor locks and intermittent stalling. Step 2: Injector Resistance Verification

All injectors fire at the exact same moment. Semi-Sequential Injection: Injectors fire in grouped pairs.

: These units replace the traditional gas/air mixer. The regulator maintains a constant pressure (typically 5 bar above tank pressure) to ensure consistent flow to the injectors. Manifold Injectors

Because it does not depend on engine coolant temperature to vaporize the fuel, performance remains consistent across all ambient weather conditions.