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故障现象 一辆日产阳光(B13,GA16)轿车怠速发抖,伴有发喘,加速性能均正常。 故障检查 常规检查,断缸试验。逐缸断开分火线。发现各缸分别断开后,发动机转速变化不大。由此怀疑缸压有问题。检查缸压,分别检查各缸压力。第1缸为1.08MPa,第2缸是1.23MPa,第3缸是1.13MPa,第4缸有0.1MPa。但标准的最小缸压为1.13MPa。按实际经验来说,缸压在0.78MPa以上、各缸压力相差0.1～0.2MPa都无大问题。保险起见,为
Symptoms A Nissan Sunshine (B13, GA16) car idling shivering, accompanied by asthma, acceleration performance are normal. Fault inspection routine inspection, broken cylinder test. By cylinder off the fire line. Found that the cylinder were disconnected, the engine speed changed little. It is suspected that cylinder pressure problems. Check the cylinder pressure, check each cylinder pressure. The first cylinder was 1.08 MPa, the second cylinder was 1.23 MPa, the third cylinder was 1.13 MPa, and the fourth cylinder was 0.1 MPa. But the standard minimum cylinder pressure is 1.13MPa. According to actual experience, the cylinder pressure above 0.78MPa, the pressure difference between the cylinder 0.1 ~ 0.2MPa no major problem. For insurance purposes