The task force on the liquefied-petroleum gas vehicle-stalling incident has submitted findings of the LPG Vehicle Testing Scheme and made recommendations on enhancing the safety of LPG vehicles.

There were 33 substantiated engine-stalling cases during the test period. Among them, 17 were caused by the improper fuel/air ratio of vaporisers and 12 by malfunctioning parts. The remaining four cases were caused by electrical-circuit problems.

The study group found systematic examination and methods, with assistance from specific tools, are required to identify the cause of stalling problems and all failing parts involved. It also needs more time to examine ageing vehicle parts.

The study group concluded that if the LPG quality complies with the existing auto-LPG specification of Hong Kong, LPG vehicles can achieve normal operation through regular maintenance.

Director of Electrical & Mechanical Services Stephen Chan said the department will follow up and implement the task force's recommendations.

Click here to see the recommendations.