A negative timing belt or timing chain deserve to be a severe issue. If the jumps a tooth, or breaks totally it have the right to lead to long-term engine damage. It’s important to recognize the symptom of a bad timing belt or chain, for this reason this doesn’t happen to her Scion XB.

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Timing belts are made the end of rubber and nylon, unlike a time chain which looks a lot like a bicycle chain. Here’s much more on a time chain vs a timing belt. For all intents and purposes, they develop the very same symptoms as soon as they go bad.

Timing belts space not the common. You’re much an ext likely to uncover a time chain in cars and also trucks 보다 belts. Smaller cars, an especially Japanese make ones, have the right to use timing belts rather of a time chain. They are most frequently found on 4 cylinder engines.

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Scion XB: bad Timing Belt/Chain Symptoms

Here are several of the most usual signs that a poor timing belt on the Scion XB:

Noise– A great indication the a timing belt has gone poor is walk to it is in noise. There might be a sound the rubber beating against something. It’ll commonly be a stormy rattling sound, and also it is regularly most noticeable right when you begin up her XB. Performance Decrease– If the timing belt has actually jumped a few teeth, however hasn’t fallen or broken off yet, it deserve to knock the engine out of time. The timing belt is responsible for maintaining the camshaft(s) in sync with the crankshaft. If the time belt has actually moved, that way that the valves will open and close in ~ the dorn time. This will lead to a power decrease. It’s extremely likely the the engine is walking to it is in misfiring together well. Loss of Fuel Mileage– Fuel mileage will certainly suffer as soon as the engine is no much longer kept in time. Glazing andDry-rot(Timing Belt Only)– If you are looking in ~ the XB’stiming belt itself, inspect to watch if the belt is glossy. It have to grip your finger as you easy brush across it. If that is slippery and also dry, the is a an excellent indication it can be bad as well. Check Engine Light– If the time chain or belt needs replaced as result of wear, however hasn’t jumped a tooth, the service engine quickly light will certainly not come on. But, if it has actually jumped, the inspect engine irradiate will really likely come on. At the least, you should gain some type of misfire said codes.
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A typical timing belt

Don’t skipping the Tensioner

The time tensioner can additionally go bad. The tensioners task is to save the ideal amount of push on your Scion XB’s timing belt or chain. As the belt/chain stretches with normal operation, it would get loosened and loss off or jump. The tensioner keeps this indigenous happening by keeping a continuous amount of pressure on the belt. So, as the belt stretches it adjusts for this stretching. If the tensioner is no much longer keeping enough pressure top top the timing belt, it’ll reason it come fail.

If you space going to change the tensioner, make certain to swap the belt as well. It’s so tough to gain to, and also timing belts/chains are reasonably affordable. It’s just the TIME that it would take friend or her mechanic to get to it that’s the problem.

Conclusion: Scion XB timing Chain Symptoms

Most manufacturers will recommend changing the time belt in ~ 60k or 100k miles. There isn’t generally a service window at every for the chains. Although, it deserve to vary. Where a many of human being get into trouble is as soon as they to buy a used vehicle with 100k no realizing the the belt service is going to be automatically due.

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Good luck through your XB. If over there is anything that you would prefer to add, please leave a comment below. We would appreciate it.