Lpi+vialle+technical+manual -

If your live data deviates by >20% from these manual values, the manual instructs you to perform a (disconnect return line and run pump at 10 bar). Chapter 6: Common Errors and Manual-Based Fixes | Error Code (Manual Ref) | Meaning | Fix (From Manual) | | :--- | :--- | :--- | | Err 12 | "Pressure build-up timeout" | Replace LPG filter (Vialle P/N 80-00-0015). Bleed air using manual priming routine. | | Err 27 | "Injector rail temp >95°C" | LPG is too hot. Check cooling loop; ensure engine coolant flows through the vaporizer (even LPI has a small heat exchanger). | | Err 44 | "CAN bus heartbeat lost" | Verify wiring between Vialle ECU and petrol ECU. Manual specifies pin 6 (CAN-H) and 14 (CAN-L) at OBD port. | | No comms | PC cannot connect | Loopback test: short pin 2 & 3 on serial cable. Timing: Manual requires 9600 baud, 8N1. | Chapter 7: Maintenance Schedules (The Forgotten Pages) At the back of every LPI Vialle technical manual is a maintenance table. Most installers ignore it—at the cost of system longevity.

If you work on a car with a Vialle LPI kit (common on Volvo bi-fuel, Holden Commodore, or aftermarket conversions), keep a digital copy on your diagnostic tablet. And remember: Call to action: Do you need a specific diagram or pinout from the LPI Vialle manual? Leave the year and engine type in the comments, and we will help you locate the right page reference. lpi+vialle+technical+manual

However, the complexity of LPI systems makes the indispensable. Without it, diagnosing a high-pressure pump failure, setting injector rail voltages, or programming the dedicated ECU (Electronic Control Unit) becomes guesswork. If your live data deviates by >20% from

Meta Description: Struggling to find the correct specs for your LPI system? This comprehensive guide breaks down the LPI Vialle technical manual—covering fuel maps, injector calibration, pressure diagnostics, and ECU troubleshooting for LPG bi-fuel vehicles. Introduction: Why the LPI Vialle Technical Manual is a Mechanic’s Bible In the world of alternative fuel conversions, LPI stands for Liquid Phase Injection . Unlike traditional vapor LPG systems, LPI—pioneered by Vialle (now part of the Prins Autogassystemen group after the collapse of the original Vialle)—injects cold, liquid LPG directly into the intake ports. This technology delivers near-petrol power output and eliminates the risk of backfires. | | Err 27 | "Injector rail temp >95°C" | LPG is too hot

| Parameter | Petrol Mode | LPG Mode (Target) | | :--- | :--- | :--- | | LPG Pressure | N/A | 5.5 – 6.5 Bar | | Injector opening time | 2.0 – 3.5ms | 2.2 – 4.0ms | | Lambda correction factor | 0.95 – 1.05 | 0.98 – 1.02 | | Pump PWM duty cycle | 0% | 65% – 85% |

This article is for informational use only. Always consult a licensed LPG installer and use the official Vialle/Prins technical manual for any repairs or modifications to fuel systems.

Engine starts on petrol but fails to switch to LPG; switch beeps three times.