To check for abnormal engine noise, you must have: Manual intuitive method is a method to determine the technical condition and fault of the machine by looking, touching, testing, listening, etc. directly or with the help of simple tools. Its distinctive feature is that it does not require special equipment, and the accuracy of the diagnostic results depends on the technical level and practical experience of the diagnostician.
First look: Observe the condition of assemblies and parts with suspected defects, such as the indicated values of each instrument, cracks and deformations of the body, the color of the exhaust gases emitted Through the muffler, oil leaks and water stains are analyzed and combined with other relevant conditions to determine the operating status of the engine.
Second contact: that is, touching the temperature and vibrations of any defective parts with your hands pTo determine the tightness of the fit, the size of the gap between the bearings, the weight balance of the parts, etc.
Third test: Use various testing methods to fully reveal the fault phenomenon, such as honking the horn, turning on the ignition switch or light switch, "turning on" the spark plug, quickly increase or decrease engine speed. , etc. , if necessary, the assembled assembly or parts can be replaced for comparative tests.
Four listening: This is to judge which ones are normal and which ones are abnormal based on the sounds made by the engine under different working conditions and different rooms and the rules of sounds. For example, if there is a knocking noise in the cylinder, if there is a whooshing noise coming from the exhaust muffler, or a “sudden, sudden” noise, etc.
Car engine problems can have many causes. We now analyze thes reasons for abnormal noises in car engines. I hope this will be useful to all car owners. The reasons for abnormal noise in the car are:
The engine is overheated, check the cooling system. The exhaust system is blocked. In the exhaust system, check whether the exhaust pipe is broken. The vacuum tube is leaking or broken.
The generator bearing may be damaged.
The engine oil pressure is too low.
The engine is overheated, the engine has carbon deposits and the oil quality is not good. It is necessary to add premium oil.
The relationship between abnormal noise and engine speed
The existence of the most common abnormal noises in engines depends on the condition of the engine speed.
Many abnormal noises on the motor are obviously related to their load
The relationship between abnormal noises andtemperature: the sound is emitted at low temperatures, and the sound is reduced or even disappears when the temperature increases; when the temperature increases, there is a sound later, and the sound decreases or disappears after the temperature drops.
The relationship between abnormal noise and motor duty cycle
Abnormal failure of motor noise is often obviously related to motor duty cycle, especially abnormal noise of the crank rod. and the valve train. Linked to the work cycle.
The relationship between abnormal noise and engine parts
When abnormal noise occurs in the engine, it will inevitably produce a certain degree of vibration. The characteristics and location of the vibration can help diagnose. the cause of the abnormal noise.
How to install spark plugs in Senjiu generators:
1. Open the engine cover and remove the engine panel. You can see the cylinder lines. does a motor have? Yes, just a few more cylinder lines.
2. Remove the steel wire directly by hand, but be sure to note that one cylinder wire corresponds to one spark plug, and remember the order of removing the cylinder wires.
3. Use an extension socket to unscrew the spark plug.
4. Just install the new spark plug, but the spark plug gap is very large. If the gap is too small, it will burn easily. If the gap is large, the ignition will become. weak or even misfires. The general deviation is 0.7-0.9mm.
Morijiu generators are produced by Morijiu (Chongqing) Machinery Co., Ltd. The company was established on June 20, 2019, with a registered capital of 5 million yuan, and its legal representative is Li Kai. Its address is located at No. 21-22, Building 4, No. 5, Torch Avenue, Jiulongpo District. , Chongqing.