I often ask questions in channel, email, and website in the comments – "how to determine what is knocking in the engine"? Many even pieces videos take off in social networks. BUT often cannot be determined, because shooting from a distance, the cabin – to hear unreal! And to diagnose something on your materials, it is not grateful. It often happens that the master of a HUNDRED will not know where the sound and then the video. No, of course there are times when rattling obvious, but often not so simple. In this article I will tell you a couple of simple ways (one of them old "antiquated") which will help determine which part of the motor you need to watch.
THE CONTENT OF THE ARTICLE:
- What is the stethoscope for the engine?
- Ordinary stick
- Microphone from phone
Knock in the power unit is audible from almost all sides. If you have something faulty and rattles something to hide it will not work. Does not happen so that to the right is heard, and left there. After the engine metal, and the metal is a good conductor of sound.
What is the stethoscope for the engine?
If the master of a HUNDRED cannot to the ear (near the motor) to determine where the knock is. IT connects specialized equipment called a STETHOSCOPE, but it is for the engine! Because in any pharmacy you can meet the medical stethoscope (probably all of them saw the doctors at the neck), so the car runs also, one side of his stick in the ears. ON the other side, at the end it has a metal needle, which is pressed against the engine block and picks up the metal bumps into the unit or the head unit.
It is worth noting that sometimes it may not knock the motor, and for example attachments, injectors, alternator, tensioner pulleys, but even metal protection
You end up with the nearest centimeter to determine where and what noise.
Stethoscopes for use in cars, are sold on ALIEXPRESS, and are not so expensive about 300 – 500 rubles. You can buy yourself and determine what they say with their hands (or rather ears).
BUT what if to wait for the order would not be desirable (all the same packages going long), and the extra money to spend too. There are methods easier.
Ordinary stick
When there wasn't any new-fangled machines, the machine that was also our fathers and grandfathers listened to the motor in the usual stick. It is as though banal did not sound.
Perfect wooden leg of a chair, part of the MOP handle, "dosochki" from cots, etc.
In General, any hard wood, which has no core and is not wet. To check if it fits, you can use any metal object, tap on the "wood" it should be ringing (details will be in the video).
The point here, because knocking in the engine (ice) are in all directions, then leaned against one side "stick" in the drive unit, and the other leaned to your ear, you can understand where it was coming from.
If knocking is strong, the mix will be extremely difficult.
However, there is a small problem, before all the ice was almost all metal, and that is the valve cover, fuel injection, etc. BUT now there's a lot of plastic, and for example to hear the chirps atomizer, "wood" is not suitable! You simply banal it is strongly pressed against the plastic (you can break). However, there is another working method
Microphone from phone
There are separate microphones for phones, for example, for the filming of the video (which I use). But you can take a standard, for example from a headset which is in combination with any modern phone (it is a thickening of the wire where you say when you call, there is a microphone)
The principle is also simple. Instead of a stick, we pressed the microphone to the part which interests us, and film. Important! Below the surface of the microphone fits tight to all the vibration passed to it.
In difficult places the microphone can be tied on a stick or wire, and to reach out to, say the block or pan.
Then you just see that shot, and analyze what you can knock.
And can listen and injectors, and alternator, and circuit. Personally, I listened to many times, and often it works.