Mechanics is a relatively Cartesian profession. However, if there is a problem that is at times complex to understand, it is unstable idling or acceleration holes. Whether it concerns a Kia Carnival 2, or any model of car. Nevertheless we can help you understand. Indeed, the origin can come from a good quantity of constituents of the engine block, even electronic. To find the nature of the failure of this Kia Carnival 2, you must follow a fairly simple methodology. But first, we'll see the signs of a poor idle.idle-problem-Kia-Carnival-2

Idling problem on a Kia Carnival 2: the symptoms

Un unstable idle close to stall . This is completely the most common problem at idle. That feeling that the engine may stall while driving at a normal speed, or that the Kia Carnival 2 grazes . It even happens that the vehicle stalls. In this situation, it is a real danger for the motorist. In this case, do not wait too long to take care of it. We suggest you make a diagnosis through the paragraph below. We can also understand that your Kia Carnival 2 has a acceleration problem . No link in this case with a low speed problem. Losses of power and acceleration holes can appear for many reasons. We must avoid confusing these two different concerns. We advise you to read our posts related to power losses.

Kia Carnival 2: developing a diagnosis to understand the origin of idling

You should start by performing several relatively simple checks, just before going into more detail.

Slow motion of the Kia Carnival 2: exhaust fumes.

A black smoke comes out of the exhaust. This often means that the air and fuel mixture is bad. Or that your air filter is clogged. In both situations, an idling problem can appear on this Kia Carnival 2. White smoke comes out of the exhaust. This time it could also come from a fault. White smoke is often water vapor. It is thus plausible that it is a problem of admission or of the cylinder head gasket.

Checking the engine block components

As we said, an idling problem on this Kia Carnival 2 can originate from many constituents. It is therefore necessary to take the time to go through the engine block carefully. However, it is still suggested to be very careful and not to touch too much the connections of the engine block, as this could worsen the malfunction or divert the cause of the problem. We obviously suggest that you go to an auto repairer for a more in-depth diagnosis. These are therefore point by point the elements to be checked.

  • The first thing to do is check all hoses . These can be pierced or even detached.
  • In addition, the sensors and sensors of your engine block. However, it is complex to check that they are working properly. You can find tutorials on youtube, and that often requires electronic devices.
  • Perform a control of pressures hydraulic. Again, pressure testing requires appropriate tools.

Idling malfunctions are common however are hard to recognize. A visual check on your Kia Carnival 2 will give an idea, however it is preferable not to tackle amateur DIY.