![]() The camshaft synchronizes the opening of the valves at the right time, in order to have the ideal engine compression, the ideal efficiency, and to obtain the engine power promised by the car manufacturer. Here I will go into further details on power loss in correlation with the valves. This is usually the first symptom that appears and that can tell you that you have a timing belt or chain wrongly incorrectly installed. ![]() This happens because the valves do not close at the proper timing. ![]() You will notice that the engine operating sound is not as usual and changed, or another noise might appear. How to know that the timing belt or chain is installed correctly?.Today we will talk about possible signs of an incorrectly installed timing belt or timing chain. On the other hand, there are also unforced errors of mechanics that forget to do just one simple step, leading to incorrect timings in the engine, and to possible damage. Sometimes we make mistakes in choosing the right workshop for this kind of operation that requires some skills. If you’re interested in the differences between timing belts and timing chains you can read the article I wrote about them.īut what if the timing belt or timing chain was installed wrong? And, for this operation to be done correctly, you need to go to a respected and authorized car workshop, so as to not have unpleasant surprises later. If the timing system fails, pistons are likely to strike open valves as the valvetrain and crankshaft come out of sync - leading to severe engine damage that can cost thousands to repair! To prevent this, just have the timing system inspected regularly by a trained Subaru technician.There is no doubt that almost all drivers know that the timing, either belt or chain, is an extremely important car part for the engine, and it needs to be changed at some mileage number or a certain amount of time.Īlthough this change is not made often, it needs to be done for the engine to run properly for a long time. In an interference engine, the valves and pistons will occupy the same space in the top of the cylinder at different times in the engine's cycle. But if your Subaru was built after 1995, it's probably equipped with an interference engine. In most Subaru engines built before 1995, this will cause the engine to stall but probably won't do much harm. For example, the 2009 Subaru Impreza owner's manual recommends timing system inspections every 30,000 miles and having the timing belt replaced every 105,000 miles.įailure to change the timing belt on time could lead to a timing system failure. While most Subaru models moved to a permanent timing chain, if your Subaru still has a timing belt, you'll want to check your owner's manual or maintenance schedule to find out how often it needs to be replaced. What Maintenance Does My Vehicle's Timing System Require However, since the timing belt is made of rubber, it's a wearable part that will need to be replaced at regular intervals. By contrast, a timing belt is a much simpler, lighter weight system which can allow for better performance. Most engine timing chains are designed to last the entire lifetime of the engine. Metal timing chains are heavier and often louder than timing belts - however, they won't require as much maintenance as the engine's oil system keeps the whole timing system lubricated and protected from wear and tear. Instead, manufacturers developed timing chains and timing belts. A huge crankshaft gear meshing with the camshaft gears just isn't practical. But, as engines got larger and more complex, overhead cam designs moved the camshafts further away from the crankshaft. The earliest engine timing system used a simple set of gears and sprockets. What Are The Advantages Of A Timing Chain?
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