There is nothing as concerning as unusual noise from the engine. Do not suddenly go to your auto repairer, the problem may not be as serious as you think. So well identifier the problem we will find out the most usual noises on the smart forfour and where they came from.
The engine of my smart forfour makes a thud
If you are at a standstill and the engine produces some kind of roar , there is indeed a problem. This can be caused by an improperly attached engine cover, which repeatedly rattles against another component. It is also conceivable that a serious rustling sound comes from your belt. If your smart forfour does not make a suspicious noise in neutral, but a deaf noise occurs as soon as you are on the move, the problem most likely comes from bearings not the engine. Do not wait too long to go to a car repairer, it could get worse.
The engine of my smart forfour makes a tractor noise
The smart forfour produces a airplane noise , you think you are at the airport. Usually this comes from a drilled or defective exhaust pipe, not from the engine. The noise should be louder and louder than usual, but dependent on acceleration. the faster you accelerate, the more noise the automobile produces. When the noise does not vary according to your acceleration, go to your auto repairer. The problem is most likely a damaged engine component.
The motor of my smart forfour makes a pan noise
A sharp noise on the smart forfour remains regularly linked to the belt, and not of the engine as such. It is usually the loose accessory belt, a faulty idler. Put a few wrenches on your belt when it is not tight enough, or replace the tensioner roller.
The engine of my smart forfour makes a lot of noise
If your smart forfour ever produces a lot of noise it can usually come from two main sources. For the first, it is a thud that will come from bearings . However, it can also come from tires not inflated enough, or even too worn. If your engine makes a lot of noise, it could also be due to a problem with fuel combustion, or exhaust hole. Finally, it is rather rare that the engine is responsible for this kind of noise.
The engine of my smart forfour makes a clicking noise
This is a relatively common and quite annoying problem. This noise of slam may arise from various parts of the engine. However, here are the two most common.
- Poor combustion. And yes, poor or partial combustion can cause clicking noises. Do not engage in repairs if ever it is, rather go to your car repairer.
- If this noise only comes from cold, it may come from hydraulic lifters .
- The problem can also come from pistons , rockers , etc.
Not easy to diagnose. Noises from the engine should be considered as signals. It is advisable to go to your car repairer for a more precise check. Be careful !