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故障现象:一辆1993款的凯迪拉克·弗利伍德轿车,V型8缸电喷发动机,TBI(节气门体喷射),排量为5．7L,采用自动变速器。车主叙述:“此车是在跑一次长途后开始犯病的。冷车时,发动机没有任何故障征兆,但热车时,发动机有严重的敲缸声,动力不足,车速上不去,且伴有回火声,有时发动机在怠速运转一会还熄火。如果长时间行驶发动机水温偏高。”
Symptoms: a 1993 Cadillac Fleetwood sedan, V-8 cylinder EFI engine, TBI (throttle body injection), the displacement of 5.7L, the use of automatic transmission. The owner described: "This car is running a long distance after the start of the disease.Cold car, the engine without any symptoms, but the hot car, the engine has a serious knock on the cylinder, lack of motivation, speed does not go, and accompanied by Tempering sound, sometimes the engine running at idle for a while still turn off .If the prolonged driving engine water temperature is high.