The engine no longer has any cylinders.
When the engine runs out of cylinders, problems such as loud engine noise, unstable idling speed and abnormal body vibration will occur. In this case, check the condition of the cylinder and the working condition of the spark plug. When the engine is running, the piston skirt collides with the cylinder wall, producing a clear "dang-dang" sound, which is usually more obvious at idle or low speeds.
What is the reason for the abnormal noise in the motor?
It is the noise caused by the friction between the belt and the pulley. The noise is temporary if you pour. a little water on it. The motor will stop working after running for a while. If the belt is a little loose, there will be a loud noise when the motor accelerates or the electrical load is high. Unless the belt is too loose or is aged and hardened, the friction noise will continue as described. , the belt is aged and hardened. The reason is that it needs to be replaced.
Check if it is the noise coming from the cylinder block. Otherwise, it can be determined that it is related to the car's starting system. When inspecting, check whether the belt is broken or has burrs; pay attention to whether the position of the starter is deviated, or whether the belt connecting the starter is aged or bent; check the engine at idle; Carry out timely inspections and repairs, and even minor car problems should not be ignored.
Detailed information:
The timing belt is a consumable part, and once the timing belt is broken, of course the camshaft will not work according to the timing. At that point, it's very. susceptiblecause the valve and piston impact to cause serious damage, so the timing belt should be replaced according to the mileage or time specified by the original manufacturer.
The timing belt is a rubber component. As the engine running time increases, the timing belt and its accessories, such as timing belt tensioner, timing belt tensioner and water pump, etc. or age. Therefore, the manufacturer of any engine equipped with a timing belt will have strict requirements to replace the timing belt and accessories regularly within the specified time frame. The replacement period will vary depending on the engine structure. Typically, the vehicle will run for 6 hours. month. It must be replaced every 10,000 to 100,000 kilometers. The specific replacement cycle should be based on the vehicle service manual.
Baidu Encyclopedia - Timing Belt
Why does the 10 model Bora generator make abnormal noise?
The engine cylinder is insufficient.
When the engine runs out of cylinders, problems such as loud engine noise, unstable idling speed and abnormal body vibration will occur. In this case, check the condition of the cylinder and the working condition of the spark plug. When the engine is running, the piston skirt collides with the cylinder wall, producing a clear "dang-dang" sound, which is usually more obvious at idle or low speeds.
In most cases, abnormal noise in the Pacific Automotive Network belt is caused by a loose belt. If this occurs, it is best to go to a repair shop to have it checked. adjust the belt tension, as the belt will make a squealing noise when it slips. Once the belt is slipped, the frictionion and high temperature will cause the belt to stretch further. and the slippage will become more serious, entering a vicious circle. Therefore, quick adjustment of belt tension is essential.
Most of the time, when the belt makes an abnormal noise, it is because it is loose. In this case, it is better to go to the repair shop to adjust the belt tension, because the belt will produce noise. a squeak if it slips. Once the belt slips, it will cause the friction temperature to be further stretched and slip more seriously, entering a vicious circle. Therefore, quick adjustment of belt tension is essential. If you have driven almost 20,000 kilometers and have never changed the belt before, you should normally replace the belt now. Don't wait for the belt to break before replacing it and you'll be in big trouble.
How to judge the abnormal noise of the engine belt: Step
First: If there is an abnormal noise in the engine compartment of the car, it is usually because the belt is loose or of poor quality. You must therefore first check the engine belt. If there are multiple belts in the car and we cannot determine which belt is the problem, we can start the car first and then pour water on the belt. If the abnormal noise disappears, there is a problem with this belt. , and we will. You will be able to check if it is loose or of poor quality.
If the motor belt makes an abnormal noise, pouring water on it will increase its viscosity, which effectively improves the viscosity of the belt. But after the water dries, the belt will return to its original state. This is the principle of belt watering.
Step
Second: We can also determine whichThe belt has the problem when listening to the sound. If there is an abnormal noise when the air conditioner is turned on, there may be a problem with the air conditioner compressor belt. If there is a problem with the steering wheel turning, there may be a problem with the power steering pump belt. If the car makes abnormal noises when starting from cold, there may be a problem with the engine belt. We can check it step by step.
Diagnosis and solutions to abnormal engine belt noise faults: The engine belt squeaks: This is due to relatively mild wear of the joining surface of the belt and pulley. This usually happens when the engine speed changes quickly. Sometimes the increased load on belt-driven accessories also causes belt noise. If the belt makes a squealing noise, this usually means that the friction coefficient of the belt surface ishas been significantly reduced and is excessively worn. If the vehicle is making noise when loaded, you may want to observe one of the drive belts. You will find that the resistance or elasticity of the automatic belt tensioning device or the belt tensioning wheel will increase abnormally.
Most automatic belt tensioners have a set of belt wear length indicators somewhere between the bottom and arm of the tensioner, along the slide. The mark consists of a pointer and two to three marks that indicate the operating range of the belt tensioner. If the pointer is outside of this range, the belt is probably too tight and needs to be replaced. On vehicles without an automatic belt tensioner, use a standard belt elongation tape measure halfway between the two pulleys. If there is a difference from the valuer standard, it is better to modifyChange the belt.
Long squealing or squealing noises from the engine belt: Although the pulley surface is stained with dirt such as sand or the worn belt is installed upside down, the belt will also emit long squeaks or squeaks. noises. This is generally due to incorrect mounting of the auxiliary device. If the noise occurs in a new car that has been on the road for some time, it may be caused by poor quality original equipment.