Use an ohmmeter to verify continuity from front to back, especially at the under-bonnet relay that powers the tank pump.
The LPI + Vialle technical manual is available through various sources, including:
Unlike standard tanks, the Vialle tank contains a high-pressure pump that keeps the LPG pressurized throughout the fuel lines.
Depressurize the system completely using the service valve on the tank. Disconnect the electrical harnesses. lpi+vialle+technical+manual
Professionals working with LPI and Vialle systems can benefit greatly from using the LPI + Vialle technical manual. Some of the benefits include:
To ensure longevity, the manual outlines routine maintenance procedures, including:
If you smell gas, the manual advises checking the circular aluminum tank lid and the coupling block seals. Use an ohmmeter to verify continuity from front
Unlike the common vapor-based systems of the era, the Vialle LPi was a beast of precision. Elias flipped the manual to the section on the . He knew that in this system, the gas wasn't just a mist; it stayed liquid right up to the intake valve, keeping the engine cool and the power high.
The in-tank pump is the most crucial, yet vulnerable, component. The manual emphasizes clean fuel and strict maintenance of the filter.
Traditional LPG systems use a reducer-vaporizer to turn liquid gas into vapor before it enters the intake manifold. The Vialle LPi system skips this step entirely. Disconnect the electrical harnesses
: Resources are available for individual components such as the Vialle LPE6.6 injector cut-off relay (which electrically switches off petrol injectors during LPG operation), the PTS-50 pump (suitable for engines up to 210 kW), V17 injectors (rated at 20–25 kW per cylinder), and cylindrical LPG tanks specifically designed for Vialle LPi and LPdi systems with large openings suitable for pump and multivalve installation.
Test the power at the tank connection; check fuse holder integrity. Loose high-pressure crimp couplings or return valve leak.
The pump circulates liquid LPG from the tank to the front of the vehicle at a pressure roughly 5 bars higher than the tank’s natural vapor pressure. This pressure boost ensures the fuel remains liquid even in a hot engine bay.
A specially designed fuel tank that houses the integrated electric pump and Multivalve assembly. The pump draws LPG from the tank and pressurizes the entire fuel system.