Defective generator belt and tensioner. It is recommended to replace the generator belt of a normal vehicle every 40,000 kilometers. Since it is a rubber accessory, it is likely to age and easily make abnormal noises, which is also the most common.
Regarding the problem of abnormal noises in cars, it is difficult for ordinary car owners to distinguish which are faulty noises and which are reasonable noises. If you go to a repair shop to check for an abnormal noise, only about 20% of cars actually have a problem. There is obviously a difference between the noise of a model equipped with a turbocharged engine and the noise of a naturally aspirated engine; models equipped with a crankcase may also produce noise due to friction, some car owners may be affected by theirs; noise afterhaving contacted different cars. Lack of understanding of mechanical knowledge, confusing reasonable abnormal noises with a vehicle breakdown. So learn to identify abnormal car noises to avoid wasting time and energy.
How to identify car noises:
In actual work, due to the limitations of working conditions, it is difficult to use special instruments to describe and compare noises cars. For example, the "squealing" noise caused by the dry friction of the bearing, the "clicking" noise produced by excessive valve clearance, which is similar to the "clicking" sound of a small hammer hitting the ground in cement, etc.
1. Correctly distinguish between normal and abnormal sounds.
When the car is running, the vibrations of various mechanisms will make sounds of different kinds, but the sound does not mean that the car is defective. HASTo avoid unnecessary disassembly, you must first distinguish what is normal. abnormal sounds and sounds. Normal vibrations of various system components (such as noise on the engine surface), gear impact noises when changing gears, intake and exhaust noises using gas as a work source, gear meshing noises, etc. are all normal sounds. Abnormal noises (abnormal noises) can be divided into light noises, normal noises and malignant noises according to their impact on car performance. Slight noises, such as the flashing sound of high-voltage electrical leakage, the slight rolling noise of bearings, etc., are generally small in volume, the degree of wear of the parts is not large, and it does not There is no significant change for a long time. Such defects can still keep the car without repair normal driving.
3. When diagnosingabnormal car noises, care should be taken to create good auscultation conditions and try to eliminate interference from other noises so as not to affect the accuracy of judgment.
It is best to consciously amplify or reduce the sound, that is, use a screwdriver or other metal rod as a stethoscope to contact the sound part to amplify the sound , or use a single cylinder to cut off the fire to reduce the sound, to meet the diagnostic needs. The monitoring site must remain quiet to minimize human interference.
Will the Qashqai 22 generator drain oil?
The reason why the Qashqai generator is not generating electricity after replacing the battery is:
1. the generator breaks down, the generator cannot normally power all of the vehicle's electrical devices, let alone charge the battery.
2. cir problemscooked, the body wiring harness is grounded or the wiring is changed indiscriminately, resulting in excessive current and burning of the wires. The reason is that the battery is aging, the power is insufficient, or the car's electrical equipment is not turned off after parking and is still in a state of power consumption, resulting in no power. energy.
Yes.
The 22 Qashqai generator will spill oil. The generator throwing oil is probably due to an oil leak at the bearing. Check Bearings for Wear: Bearings are an important part of the generator operating process. If excessive wear is found, a little lubricating oil should be added when adding engine oil, add it from the top, and the entire amount added cannot. be too much, otherwise it will easily produce electric energy transfer effectseu.
When it is suspected that the generator is defective, you can perform a preliminary inspection of the vehicle and remove the generator for further inspection without disassembling it. The tools used for testing can be a multimeter, general DC voltmeter, DC ammeter, oscilloscope, etc. You can also use car bulbs and flashlight bulbs to make your own small test lights, etc., and you can also test them by changing the working status of the car.