When should you replace a timing chain?
Like a pacemaker, the timing chain ensures that everything in your engine runs smoothly and efficiently.
This chain allows all motor components to communicate with one another and prevents them from damaging or colliding with other engine components. Everything could be thrown off kilter if one step is missed.
That being said because the timing chain is such an important part of your vehicle’s engine, keeping it in good condition is a top priority and an important part of your vehicle’s maintenance process and car service in Reading. With that said, here is a quick guide to understanding what a timing chain is and what it does in relation to your vehicle’s engine.
What exactly is a timing chain?
It is a metal chain that uses engine power to drive the camshaft. It is much quieter, lighter, and requires less maintenance than its rubber belt counterpart. Timing chains are also known for their longevity and durability because they do not need to be replaced as frequently as their rubber-based timing belt counterpart. These will also frequently last the life of a car with minimum maintenance.
What is the purpose of a timing chain?
A timing chain synchronises the position of an engine’s pistons and camshafts in the same way that a timing belt does. It ensures that the motor is properly timed and allows the engine’s valves to open and close in accordance with the engine’s combustion process. The chain is located inside the engine and must be kept lubricated at all times to prevent wear and tear.
When should you replace a timing chain?
Because this part lasts longer than a timing belt, it will be replaced between 120,000 and 150,000 miles on a vehicle. However, this is still dependent on the engine and the manufacturer’s specifications. It is also critical to keep the timing chain lubricated because using the incorrect viscosity oil can damage the timing chain pins and plates.
While a timing chain is more durable than a timing belt, signs of stretching or failure are slightly more difficult to detect. It is also more difficult to cause a timing chain to jump teeth, causing the engine to run out of sync. Here is a quick checklist of warning signs that it may be time to replace a timing chain:
The engine fails to start or runs poorly — This could indicate that the engine’s timing is off because the valves aren’t properly in sync with one another, leaving a small gap between the combustion process.
Metal shavings are found in the oil — Looking at the oil in the engine during an oil change is a good way to see if a chain is failing. If there are metal shavings in the oil, it could mean that the timing chain has been stretched and is about to fail. It could, however, be a sign of something else, so keep that in mind when inspecting the oil.
The engine won’t start or won’t idle — A broken or damaged timing chain will prevent the engine from starting or will cause it to fail while driving. If this occurs, your engine’s timing may be thrown off, and the pistons may come into contact with the valves, resulting in a costly repair and impairing your vehicle’s movement.
The check engine light is illuminated — The check engine light is another indicator of a stretched or damaged timing chain. The vehicle’s computer will illuminate this warning light only if it detects a problem with the vehicle. If its sensors detect a problem, the light will illuminate, requiring immediate attention and a scan to determine the source of the problem.
Listen for unusual rattling noises from the engine while it is idling — This is one audio way to determine if your timing belt is failing. A normal engine should produce a consistent and smooth sound, indicating that everything is working properly. When a timing chain becomes stretched, it causes vibrations inside the engine, resulting in a rattling sound as the engine idles.
What should I anticipate from a timing chain replacement?
When your timing chain needs to be replaced, the engine must be opened up or even removed from the vehicle. Aside from the costly repair bill for parts and labour, expect the car to be out of commission for a few days as this process may take a few days to complete. It is important to note that the availability of the car service centre will also be a factor. Aside from the initial process of replacing the timing chain, expect your vehicle to go through a short break-in period to ensure that everything is working properly. This is done to ensure that the installation process was completed correctly and that nothing else needs to be addressed afterward.
