The system functions as a continuous loop. Fuel is pumped from the tank, sent to the engine bay, distributed to the injectors, and the unused portion is returned to the tank. This continuous flow prevents heat soak from vaporizing the fuel in the fuel rail.
Clean or replace faulty liquid injector; check purge valve operation. Worn tank pump bearings; Restricted fuel filter. lpi vialle technical manual top
Heavy engine bogging under high loads, sudden switching back to petrol mode, or loud whining noises coming from the LPG tank area. The system functions as a continuous loop