It is never relaxing to find out a sound in your vehicle that you don’t know the cause of. So, what if you identify a loud noise that persists on your Citroen C4 Picasso? It is very plausible that this is a minor trouble, but before beeing sure, it is better to operate some checks. Whether that loud noise comes from the front of the automobile, from the rear, whether it happens when you accelerate or when you are parked, our team has written this content to help you fix it. First, we will describe the possible explanations for the problem according to when loud noise shows up on your Citroen C4 Picasso, and then we will give attention to the region of origin of the noise. In any case, if this noise remains, follow these recommendations to help you find the origin.
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When does my Citroen C4 Picasso generate a loud noise?
One way to discern a noise from your Citroen C4 Picasso is to define when it appears. Indeed, some complications can be related to parts that are only stressed under certain circumstances. It is this technique that we will focus on in this first part.
Loud noise Citroen C4 Picasso when accelerating
Loud noise on Citroen C4 Picasso that happens when you are accelerating can be symptomatic of different failures. In fact, if you feel a noise that is louder and louder when you accelerate, it can come from a faulty turbo that will generate a much higher noise than during normal use. Moreover, it is also highly plausible that loud noise on your Citroen C4 Picasso is linked to a wheel bearing, which is one of the most common causes of these types of manifestations. Another alternative 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 Citroen C4 Picasso is stopped
If your Citroen C4 Picasso 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 Citroen C4 Picasso and how can I be sure of its origin?
Now that we have defined the source of the noise, we will look into the verification stage to be sure that this is the matter you are experiencing.
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The loud noise comes from the wheels of my Citroen C4 Picasso
As we have seen before, loud noise from the wheels of your Citroen C4 Picasso may be connected to two main disorders. 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 consider to examine 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 swap it or them quickly. 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 Citroen C4 Picasso that is the matter, 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 technician to change the tires or do a balancing.
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The loud noise comes from the engine of my Citroen C4 Picasso
In case you have discovered loud noise as coming from the engine of your Citroen C4 Picasso, 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 Citroen C4 Picasso 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 cause an air intake, if it is just disconnected you can reconnect the air intake tubes yourself. Then examine that the engine idle speed is not random. In case you confirm one of these two problems, take your vehicle to your garage .
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Loud noise comes from the exhaust pipe of the vehicle
If the noise you have discovered comes from the exhaust pipe of your Citroen C4 Picasso, it is highly plausible that you have rust if your automobile is old and has created holes in it over time and therefore generates a very high noise close to aircraft noise on your Citroen C4 Picasso, that a part has been cut off due to wear, or, finally, that a clamp has become loose due to vibrations. To validate this, get help from someone who will stand under the automobile 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.
