Mechanics is a fairly Cartesian profession. However, if there is a phenomenon that is hard to explain at times, it is an unstable idle or acceleration holes. Whether it concerns a Smart Crosstown, or for any other car model. However, we can help you understand. Indeed, the reason can come from many parts of the engine, even electronic. To detect the nature of the breakdown of your Smart Crosstown, you must follow a strict procedure. But above all, we will see the signs of a slowdown idle.slow-motion-problem-Smart-Crosstown

Idle problem on a Smart Crosstown: symptoms

Un unstable idle close to stall . This is completely the most common idle malfunction. This impression that the engine may stall while driving at ordinary speed, or that the Smart Crosstown grazes . Sometimes it happens that stalling occurs. In this case, it is a real danger for the driver. In this case, don't wait too long to take care of it. We invite you to carry out a diagnosis via the paragraph below. We can also understand that the Smart Crosstown has a acceleration malfunction . More report this time with a low speed dysfunction. Losses of power and acceleration holes are going to happen for multiple reasons. We must avoid confusing these two phenomena. We suggest you browse our posts on power losses.

Smart Crosstown: developing a diagnosis to understand the origin of idling

You have to start by performing several relatively easy checks, just before going into more detail.

Idle of the Smart Crosstown: exhaust fumes.

A black smoke escapes from the exhaust. This generally implies that the air and fuel mixture is bad. Or that your air filter is clogged. In both cases, an idle malfunction can occur on the Smart Crosstown. A White smoke escapes from the exhaust. This time too it could be due to a defect. White smoke is usually water vapor. It is therefore possible that it may be a malfunction of the intake or the cylinder head gasket.

Engine components check

As we have shown, an idle malfunction on a Smart Crosstown can come from many constituents. You should therefore try to inspect the engine carefully. On the other hand, it is recommended to be very careful and not to tamper with the elements of the engine, because that could amplify the problem or conceal the cause of the malfunction. We suggest of course going to a garage for a more in-depth audit. Here are therefore step by step the components to be checked.

  • The first thing to do is check all of the hoses . These can be perforated or even detached.
  • You will also need to check the sensors and sensors of your engine. It is nevertheless difficult to verify that they are working properly. You can find tutorials on youtube, and it usually requires electronic devices.
  • Perform a check of pressures hydraulic. Again, pressure controls require appropriate equipment.

Idle worries are common but are hard to diagnose. A visual check on the Smart Crosstown gives the opportunity to have a clearer vision, but it is wiser not to tackle amateur DIY.