What could possibly be more disturbing than noises when you start your vehicle… In fact, you maybe previously discovered noises when you start your Mercedes Cla and generally speaking it’s frustrating. It may not be anything serious, but each new engine starts usually will turn into a scary moment during which you don’t know if your engine will start. That is why our editorial staff has made the decision to prepare this content to help you find its source. To do this, first, we will see the case of noise when starting on Mercedes Cla but the vehicle does not start, and finally, the noise you can feel on your vehicle if it starts, first cold and then hot.
I listen a noise when I try to start my Mercedes Cla, but the engine doesn’t start
I find a clicking noise at the start of my Mercedes Cla
If you listen a noise when you want to start your vehicle, and it does not want to turn on, it is most likely that it is the battery that is contributing to the problem. In fact, if you perceive clicking noise when you start your Mercedes Cla, and it sounds like a ticking, you most likely lack the energy to run your starter, check your battery with a voltmeter and replace it if necessary. In case that after looking at your battery, you still encounter a noise when starting your Mercedes Cla and it does not want to start, consult this article about starter motor noises on Mercedes Cla for more information and to find the origin of your problem.
I experience a noise when I start my Mercedes Cla but the engine it starts
I listen a noise when I start my Mercedes Cla
- Grinding or squealing type noises when I start cold Mercedes Cla :
If you listen a noise when you start your Mercedes Cla, and this noise is like grinding or squealing noise, which can also be relating to vibrations, it is possible that it is the combustion of your vehicle that is involved. In fact if you have an air/fuel mixture that is not good the normal running of the engine will be altered. Check the state of your injectors and air intake system. For more information on the origins of injection-related noises on Mercedes Cla, read this content page. - Cold start friction parts Mercedes Cla :
If you know cold friction noises on Mercedes Cla, it is practically certain that they come from one of your belts. Either the serpentine belt starts to wear out and therefore causes a friction noise. It is also possible that the tensioner roller or damper pulley is worn out and that as a result the extension belt make a friction noise, often when cold. Visually check your belt and replace it if necessary. If you have other friction noises, and it doesn’t result from your serpentine belt, we have a full article on engine of your Mercedes Cla.
I listen a noise when starting my Mercedes Cla even when hot
- rubber mount / silent bloc dead motor
If you listen a clacking noise just as you start your car’s engine and it is more than 100,000 km long, it is possible that some of your engine silentblocks or rubber mounts are good to be replaced. And the huge vibrations produced by starting the engine can produce starting noise on Mercedes Cla. Check their state and swap them if necessary. Browse this article if you would like to have detailed information on rubber mount noises on Mercedes Cla. - Motor flywheel
Finally, if you have a noise that sounds a little like a crank noise when you start your Mercedes Cla, even when hot, it is possible that if your series is equipped with a dual-mass flywheel, it is the origin of your concerns. In fact, these parts have created a lot of concerns on many automobiles. When they take part in the game they generate noise when you start your Mercedes Cla and when you turn off the engine. Have his state checked by a professional.
