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故障现象一辆桑塔纳2000 GSi乘用车,累计行程10多万km。该车在缓加速时发动机工作尚可,但在急加速时发动机严重抖动,并回火“放炮”。排除过程首先用修车王故障检测仪读取故障代码,无故障代码显示。观察数据流,除喷油时间偏长(5.5ms)外,其余也正常。由于无故障代码,数据流也正常,所以先从非电控部分着手。先后检查了燃油管路、高压线、点火线圈、火花塞和配气机构等,并无异常。拆下喷油器,发现有积碳附着在喷油器头部。将喷油器用超声波清洗
Symptom A Santana 2000 GSi passenger car, a total of more than 100,000 km. The car at slow acceleration engine work is acceptable, but in the case of rapid acceleration engine jitter, and tempering “blasting.” Exclusion process First, with the repair vehicle king fault detector read fault code, fault-free code display. Observed data flow, in addition to long injection time (5.5ms), the rest are normal. Due to trouble-free code, data flow is also normal, so start with the non-electronic control section. Has checked the fuel lines, high voltage lines, ignition coils, spark plugs and gas distribution agencies, etc., there is no exception. Remove the injector and found that there is carbon deposition in the injector head. The injector ultrasonic cleaning