There is nothing more disturbing than unwanted noises coming from the engine block. Do not go directly to your car repairer, the problem is probably not as critical as you might imagine. So well identifier this problem let's see the most regular noises on a Smart Fortwo 3 and where they come from.engine-noise-Smart-Fortwo-3

The engine block of my Smart Fortwo 3 makes a thud

If you are ever at a standstill and the engine block emits some kind of roar , there is indeed a problem. This could come from a loose engine block cover, which rebounds repeatedly on another element. It is also likely that a serious rustling noise will come from the belt. If your Smart Fortwo 3 never produces any suspicious noise when it is stopped, but a deaf noise appears as soon as you drive, the problem most likely arises from bearings and not from the engine block. Don't wait too long to get to a car repairer, it can get worse.

My Smart Fortwo 3 engine makes a tractor noise

The Smart Fortwo 3 emits a airplane noise , you think you are at the airport. In general, it comes from a drilled or defective exhaust pipe, and not from the engine block. The noise should be louder and more serious than normal, but related to acceleration. the harder you press the accelerator, the more noise the car emits. If ever this is not the case and the noise does not vary with acceleration, go to the auto repairer. The problem is certainly due to a faulty engine block element.

The engine block of my Smart Fortwo 3 makes a pan noise

A pan noise on a Smart Fortwo 3 generally remains linked to the belt, and not of the engine block as such. It is usually the accessory belt not tight enough, a damaged tensioner. Put a few wrenches on the belt if it is slack, or replace the tensioner roller.

The engine of my Smart Fortwo 3 makes a lot of noise

If your Smart Fortwo 3 ever emits a lot of noise, it can generally 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 sufficiently swollen, or worn out. If the engine block produces a lot of noise, it could also come from a fuel combustion problem, or exhaust hole. Finally, it is quite rare that the engine block is responsible for this kind of noise.

My Smart Fortwo 3 engine makes a popping sound

This is a relatively common and quite annoying problem. This noise of slam could arise from several parts of the engine block. However, here are the two main ones.

  • Poor combustion. And yes, poor or partial combustion could generate clicking noises. Do not engage in repairs if that's right, go to your car repairer instead.
  • If this snap comes only in the first few minutes, it could be because of hydraulic lifters .
  • The problem could also come from pistons , rockers , etc.

Not easy to diagnose. Engine noises should be taken seriously. We advise you to go to your auto repairer for a more precise audit. Be vigilant!