The dedicated gas computer that reads stock vehicle sensor signals and applies an offset calculation to map petrol injection pulses cleanly over to LPG. Diagnostic LED Switch Fault Codes
1.2 Ohms to 1.5 Ohms (Low Impedance - Peak & Hold driven)
Unlike vapor systems, there is no traditional vaporizer, though regular professional inspection of the pump and filters is required.
Understanding the exact operational phases is critical for diagnosing intermittent faults. lpi vialle technical manual top
Every Vialle LPi installation relies on an auxiliary electronic control module called the . The fundamental strategy of the LPE is straightforward: it measures the vehicle's stock petrol injection timing and dynamically converts it into a corresponding LPG injection pulse width .
The following components and accessories are included with the LPI Vialle system:
: Because the inlet system remains free of restrictive venturis or throttles used in vapor systems, engine output is comparable to petrol. Environmental Resilience The dedicated gas computer that reads stock vehicle
(if equipped) may require service every 40,000 km, involving replacement of diaphragms and seals. Common Troubleshooting Steps Poor Running/Misfires
Safely bleed the remaining pressure in the lines using a dedicated service manifold connected to the engine bay test port. Ensure the workspace is well-ventilated and free from open flames, sparks, or electronic switching equipment.
) indicates a broken internal pump winding. Connect an oscilloscope to the LPI ECU RPM input wire to confirm a clean square-wave signal during cranking. Every Vialle LPi installation relies on an auxiliary
: Synthetic feed and return lines that replace standard copper piping. Operational Principles Liquid Injection
For advanced diagnostics, technicians use the Vialle Diagnostic Tool and a specialized interface cable (like the ) to communicate with the LPE via a laptop. Technical Resources
Always check the on the title page of your manual. If the document is older than three years, visit the Vialle support site for an addendum.
These injectors operate under high pressure and utilize specialized internal seals resistant to the chemical properties of liquid propane. 2. Advanced Diagnostic Steps & Symptom Analysis
This comprehensive technical manual serves as a definitive guide for automotive technicians and LPG specialists working on the Vialle LPi system. 1. System Overview and Core Operating Principles