When your vehicle stops running all of the sudden, it is commonly due to a broken timing belt or timing chain. Different engine combinations utilizeeither a belt or chainthat is connected to the cam and crankshaft and is responsible for the internal operation of a combustion engine. They are both protected from exposure by a定时盖which can be opened and accessed by a mechanic to repair damage to these components or make adjustments as needed.
正时链盖负责防止污垢和碎屑进入发动机内部。由于正时链和皮带位于发动机内部的事实，正时盖甚至有助于保持正时皮带或正时链固体固体和安全的操作。正时盖由塑料或金属构建，并与时机盖垫圈一起工作，以防止油泄漏到地面上。
Although the timing cover is not a moving part,from time to time可能会对盖子或内部的垫圈造成损坏，这些垫片需要由ASE认证的机械师进行服务或替换。当零件磨损时，它们倾向于显示某些警告信号或症状。下面指出的是一些常见的警告指标problem with the timing coverexists.
1. Oil is leaking in the center of the vehicle
The timing cover has a gasket that allows the cover to be securely attached to the engine block. Over time and due to exposure to heat, dirt, road grime, and more, the gasket can often become cracked or wear out. This will reduce the tightness of the timing cover and may result in oil escaping the engine and leaking onto the ground. A broken gasket is not the only reason why oil might be leaking from the timing cover. In some cases the timing cover may be cracked, especially if it is manufactured out of plastic. If you notice thatoil is leaking从电动机的中心（靠近前部），这可能是由于定时盖或正时盖垫圈的故障。
2. Engine runs rough
另一个常见的信号表明，正时盖存在问题是电动机是否运行粗糙。当定时盖被损坏并且无法与发动机块正确密封时，污垢和碎屑可以进入发动机；特别是在曲轴或凸轮轴等关键区域。发生这种情况时，发动机可能会粗糙。如果问题不尽快解决，则可能导致发动机故障。如果您注意到引擎运行粗糙或听起来像是失火, please contact a mechanic as soon as possible to determine the cause of this symptom and if needed,更换定时盖.
3.发动机发出的声音
When the timing cover is loose, it may cause a敲击声音从电动机前部附近出现. If you hear this type of sound, drive the vehicle home as soon as possible. Once you arrive home, open the hood and look right behind the radiator fan. If you see a flat, metal plate that appears to be shaking, this is most likely the timing cover that is loose. The sound is due to clanking against the engine block. If this is happening, do not start the engine again. Contact a local ASE certified mechanic so they can inspect the problem and replace the timing cover if needed.
4. Check Engine Light comes on
The timing cover is designed to seal the engine and keep oil or pressure from escaping. If a pressure or vacuum situation occurs, sensors in the motor will trigger the检查引擎灯在仪表板上照亮。每当出现此灯时，建议认真对待它，因为它可能意味着引擎内的主要问题。当定时盖松动时 - 这是一个主要问题。
Under normal driving situations, the timing cover should never cause a problem. Typically when an engine approaches 100,000 miles of service, the timing cover gasket may begin to wear out, causing oil to drip from the engine. Since the timing cover is also near the serpentine belt, it may cause the oil to splatter and run under the entire engine. If you notice any of the above warning signs, contact a certified mechanic from YourMechanic as soon as possible.
