Usually when you hear a squealing sound from your engine it's a drive belt that's causing it to happen, and particularly your serpentine belt. Since it rotates at such a very high rate of speed, when these teeth aren't clicking in properly along the pulleys, you're going to hear that distinctive ticking noise.Īdditionally, you may also notice a squealing sound. When your timing belt starts making a ticking sound it's not because it's simply misaligned, it's because the teeth that are on the inside of the belt which allow its to grip the pulleys at the end of your camshaft and crankshaft are either wearing down or breaking off entirely. When your timing belt starts making these noises you have one option to fix it. And that's how you know if there is a problem with your timing belt because the sounds it makes only happen when something is wrong. The bottom line is that a brand-new timing belt should not be producing any sound that you'll notice when you're driving. If it doesn't, you may want to get your engine looked at. If this happens at all, and that is a rare case to begin with, but if it does happen it should fade away pretty quickly within a few days worth of driving. That's just because it needs to be worked in a little. If you hear something that's like a bit of a high-pitch whining sound, it may be a new tensioner giving you trouble. You'll hear the normal hum of any engine, but the timing belt itself should run entirely silently. If they are ok, proceed to dig deeper to troubleshoot the timing belt tensioner.If you have a new car, or if you just had a new timing belt installed in an old one, the sound you should be hearing when you are driving is relative silence. Also, if they are failing, they generally do not cause stumbling or hard starting. So if you have doubts about where the noise is coming from, take steps to rule them out first. They are both relatively easy to inspect, and simple and inexpensive to replace. Both of these can also make the same noises as a timing belt tensioner. Keep in mind that the serpentine belt also has a tensioner, and also sometimes and idler pulley. When the engine is idling, listen for the following noises from the timing cover area: For example, the pulley may not be rotating freely. Or you may hear timing belt tensioner noise. When the timing belt isn’t tight enough, it starts making noise.
Even if you manage to start the engine, expect the engine to misfire or run rough. This leads to hard starting It may take a while for the engine to fire up properly. When there are timing belt tensioner issues, the valve timing is slightly off. Lack of perfect timing leads to acceleration issues. Look for the following signs of timing belt tensioner failure: Acceleration Issues The crankshaft and camshaft will come out of perfect time for a moment or two. Instead, when the throttle is abruptly opened the tensioner can’t keep the right tension on the timing belt. One thing to keep in mind is that when the tensioner begins to fail, the timing belt, which has teeth, doesn’t actually slip. There are several different ways to detect timing belt tensioner failure simply by driving the vehicle. If the timing belt tensioner is leaking, it will lose the tension it needs to keep the timing belt tight. It uses hydraulic oil to maintain the tension. Hydraulic oil leak: A hydraulic timing belt tensioner assembly works like a small shock absorber.It may cause the timing belt to slip off. Dirt and dust build-up on the timing belt tensioner pulley: When this happens, the pulley will fail to support the timing belt.As a result, the entire tensioner becomes too weak. Over time, the spring stretches out and loses its tension.
As a result, the timing belt becomes loose and the valve timing can be thrown off. When a timing belt tensioner fails, it loses tension. Usually, the tensioner is replaced along with the timing belt. Some timing belt tensioners last a long time.
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