发动机时正时链条异响故障一般都是链条过长、紧链器失效或导链板磨损所致,但笔者在排除一辆苏联拉达2105轿车发动机正时链条响故障时,发现故障竟是由点火时间不准促使正时链加速“拉”长而引起, 拉达2105型轿车发动机凸轮轴与曲轴之间相距较远,正时链条较长,故易被“拉”长。笔者在检查这辆拉达车时,发现链条长 Engine timing chain abnormal sound failure are generally too long chain, chain tensioner failure or lead plate wear caused by, but I ruled out in a Soviet Union ROTAC 2105 sedan engine timing chain ring fault, actually found fault By the ignition timing is not allowed to accelerate the timing chain to accelerate the “pull” caused by long, Lada 2105 car engine camshaft and crankshaft far apart, the timing chain longer, it is easy to “pull” long. When I checked this car Lada, I found the chain is long