关键词: 汽油电喷发动机；加速不良；故障诊断

Abstract: The poor acceleration fault of gasoline electronic fuel injection(EFI) engine is one of the key points and difficulties for automobile maintenance personnel to diagnose and eliminate. This paper analyzes and sorts out the influencing factors of the oil circuit, circuit, gas circuit and machinery that cause the poor acceleration of gasoline EFI engine, explores and summarizes the diagnosis methods and ideas combined with years of practical experience, and analyzes and applies them with cases, so as to provide reference for engine troubleshooting.

Key words: Gasoline EFI engine; Poor acceleration; Failure diagnosis