Top |link| — Lpi Vialle Technical Manual

Turn off the engine while it is running on LPG. Remove the intake manifold vacuum hoses or pull the injector rail out slightly while leaving it pressurized. Visually check for liquid LPG leaking or seeping out of the injector tips. A dripping injector floods the intake tract with fuel, creating an extremely rich condition that prevents a clean restart until the excess vapor dissipates. 5. Technical Diagnostic and Pressure Testing Steps

: Vialle offers a series of installation videos covering safety, fuel module fitting, and calibration.

| Symptom | Top-Level Cause | Solution | |---------|----------------|----------| | Engine stalls on switch to LPG | Liquid pressure drop >2 bar during injection | Replace LPG filter; check tank pump flow rate | | Poor cold start on LPG | Vaporizer top cover diaphragm stiff | Replace diaphragm kit (PN VIL-TOP-DIA) | | Rough idle, backfire | Injector rail top O-rings leaking | Replace injector seals (liquid-rated green FKM) | | ECU comms error | Corrosion on top of ECU connector | Clean with contact spray, seal with dielectric grease | lpi vialle technical manual top

| Component | Interval | Action | |-----------|----------|--------| | Liquid LPG filter | 20,000 km | Replace (top-access on filter head) | | Vaporizer top diaphragm | 60,000 km | Inspect, replace if hard | | Injector rail top seals | 80,000 km | Replace (prevent external liquid LPG leaks) | | ECU firmware | As released | Update via Vialle programmer |

The Complete LPI Vialle Technical Manual: Troubleshooting, Maintenance, and System Optimization Turn off the engine while it is running on LPG

: Placement guidelines on the engine and discharge angle specifications.

The system reads engine speed and load to fine-tune pump speed control, ensuring sufficient fuel volume under wide-open throttle conditions. A dripping injector floods the intake tract with

The technical manual emphasizes that while the system is robust, maintenance is key to long-term reliability.

: The tank features an integrated LPG pump that circulates liquid fuel through the system. The pump motor is lubricated by an internal oil lift screw that carries oil to the top bearing.

Interfaces with the vehicle’s original signals to manage the LPG injectors.

The following technical specifications apply to the LPI Vialle system: