It is never enjoyable to find out a noise in your vehicle that you don’t know the starting point of. So, what if you discern a loud noise that lasts on your Kia Optima? It is highly plausible that this is a minor trouble, but before beeing sure, it is better to carry out some inspections. Whether that loud noise comes from the front of the vehicle, from the rear, whether it shows up when you accelerate or when you are parked, our team has made this article to help you fix it. First, we will detail the possible explanations for the issue according to when loud noise appears on your Kia Optima, and then we will concentrate on the region of origin of the noise. In any case, if this noise persists, follow these instructions to help you find the origin.
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When does my Kia Optima make a loud noise?
One way to discern a noise from your Kia Optima is to determine when it appears. Indeed, some complications can be linked to components that are only stressed under certain occasions. It is this process that we will focus on in this first part.
Loud noise Kia Optima when accelerating
Loud noise on Kia Optima that happens when you are accelerating can be symptomatic of several failures. Indeed, if you feel a noise that is louder and louder when you accelerate, it can come from a faulty turbo that will create a much higher noise than during normal operation. Additionally, it is also highly plausible that loud noise on your Kia Optima is associated with a wheel bearing, which is one of the most common origins of these types of symptoms. Another possibility is that your exhaust pipe may have holes or a collar may have become loose. Finally, it is also plausible that the trouble may come from a deformed tire or an unbalanced wheel that will tend to vibrate as it gains speed.
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When my Kia Optima is stopped
If your Kia Optima makes a loud noise while not accelerating, engine on, the trouble may be connected to poor air intake. An air intake hose that has come loose or has a hole in it may be the reason.
Where does loud noise come from on my Kia Optima and how can I be sure of its origin?
Now that we have found the source of the sound, we will look into the verification step to be certain that this is the concern you are experiencing.
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The loud noise comes from the wheels of my Kia Optima
As we have seen earlier in this article, loud noise from the wheels of your Kia Optima may be connected to two main trouble. If it is one of your tired bearings, it will tend to make a thumping noise that intensifies when it is under stress (spins faster and faster). So keep in mind to check by driving “fast” (neutral gear on and window open to hear only the noise of the wheels) that the noise is located here, if this is the case change it or them straight away. If it is a deformed tire, remember to visually check the entire tread area for linearity. If it is the balancing of the wheels of your Kia Optima that is the issue, you will tend to feel a vibration in the direction of the vehicle as you go faster. In both cases, you will have to go to your auto mechanic to change the tires or execute a balancing.
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The loud noise comes from the engine of my Kia Optima
In case you have discovered loud noise as coming from the engine of your Kia Optima, the two most likely causes are turbo and air intake. In the first case, a turbo failure may also be connected to a compression loss during the engine ramp-up phase, so you should experience a power loss during your acceleration. If the loud noise on your Kia Optima is related to air intake, the check will be done mainly visually, check all your air intake hoses by a visual control in your engine block to be sure that it is not damaged or disconnected which would induce an air intake, if it is just disconnected you can reconnect the air intake tubes yourself. Then check that the engine idle speed is not random. In case you confirm one of these two trouble, take your vehicle to your mechanic .
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Loud noise comes from the exhaust pipe of the vehicle
If the noise you have noticed comes from the exhaust pipe of your Kia Optima, it is highly plausible that you have rust if your vehicle is old and has created holes in it over time and therefore generates a very high noise close to aircraft noise on your Kia Optima, that a part has been cut off due to wear, or, finally, that a clamp has become loose due to vibrations. To ensure this, get help from someone who will stand under the vehicle while you accelerate to find the exact area of source of this noise. If it is a hole, you can repair it with a putty provided for this purpose, or, if it is a collar, “reattach” it. If it is cut or the hole is too big, it is better to get closer to your mechanic.
