Preignition. If timing correct, you need more octane in your fuel.
The sound of a jet engine vibrates more than the sound of a lawn mower.
from a distance away why does a jet sound loader than a lawn mower
Most likely the serpentine belt, when you rev the engine does it get louder, once the car runs for a minute does it go away or it may still do it.....If this applies most definitely I would have the serp belt checked or changed...
from a distance away why does a jet sound loader than a lawn mower
It takes energy for sound to travel through air, and sound is energy. So the more air the sound has travelled through the less sound there is left.
Because of the type of engine, and how the exhaust is made. If take away the silencer on the exhaust pipe, you will get a whole different sound. And If the engine has for example a four cylindre, it will make a nicer, and not so deep sound. With a 8 cylindre engine , it will make a more dark and "groggy" sound.
Lifters or valves.
Not really an answer, more to the question. You can hear the knock at idle. However, if the engine has time to cool, it's not so audible. Also, if you hit the accelerator, the sound seems to die away when the engine returns to idle. The sound is coming from both the top and bottom of the engine.
90,000 cans are thrown away every minute by Americans ourselves.Sad, huh?
yes and yes
If the engine has a knocking sound like someone hitting something with a hammer then it could be a rod bearing. It is best to have it looked at right away. It may require a complete engine rebuild.
Yes, but if you want one just don't rev up the engine in front of the po pos cuz some pigs might recognize the sound of the engine and stop you and take away your car