Mechanics is a relatively Cartesian profession. However, if there is indeed a phenomenon which is sometimes complex to explain, it is an unstable idle or acceleration holes. Whether it concerns a Smart Forvision, or for any other type of vehicle. However, we are here to help you. Undeniably, the origin can come from many components of the engine, or even electronic. To detect the source of your Smart Forvision failure, you will have to follow a fairly simple method. But before, we will see the symptoms of a faulty idle.
Idle problem on a Smart Forvision: symptoms
Un unstable idle close to stall . This is really the most common problem in slow motion. This feeling that the vehicle will stall while traveling at normal speed, or that the Smart Forvision grazes . It may indeed happen that the vehicle stalls. Consequently, it is a real danger for the motorist. If so, do not delay in worrying about it. We suggest that you do a check via the next paragraph. We can also understand that your Smart Forvision has a acceleration problem . No relation this time with a problem of low mode. Losses of power and acceleration holes could happen for many reasons. These two different concerns should not be confused. We suggest you browse our posts related to power losses.
Smart Forvision: develop a diagnosis to understand the origin of idling
We must start by performing several extremely simple checks, before going a little more in detail.
Idling of Smart Forvision: exhaust fumes.
A black smoke escapes from the exhaust. This generally means that the air and fuel mixture is bad. But also that the air filter is clogged. In both situations, an idle problem can occur on your Smart Forvision. A White smoke escapes from the exhaust. This time again it can come from a fault. White smoke is usually water vapor. It is therefore probable that it is an intake or cylinder head gasket problem.
Engine components check
As we have seen, an idle problem on this Smart Forvision can come from several points. Take the time to inspect the engine carefully. However, it is still recommended to be extremely careful and not to touch the engine components too much, as this may aggravate the breakdown or conceal the origin of the problem. We obviously advise you to go to an auto repairer for further inspection. Here are therefore step by step the components to be examined.
- The first thing to do is check all hoses . These can be perforated, or even detached.
- We will also have to examine the sensors and sensors of your engine. It is however difficult to verify that they are working properly. You can find tutorials on youtube, and it usually requires electronic devices.
- Perform a control of pressures Hydraulic. Again, pressure controls require suitable equipment.
Idle malfunctions are common however are difficult to recognize. A visual check on your Smart Forvision will allow you to have an idea, however it is more advisable not to venture into amateur DIY.