1. The causes of hysterical engine noise problems can be divided into air filter, spark plug, ignition wire, gasoline, fuel filter, carburetor, oil pump and other problems. Check if the air filter is dirty, if the spark plug is old and needs to be replaced, if the ignition coil is broken, and if the gasoline is not clean, such as water in the fuel line. 'oil. Also check the oil pump, carburetor, etc.
2. When driving, acceleration is normal and ignition can be normal. However, when driving at a constant speed, it is found that the engine speed is too high but the speed still seems incapable. to increase. Try checking the coolant. Oil pressure is too high or too low. Check the pressure gauge. There may be a problem with the ignition time setting, which may also cause such symptoms. As for others, it may bea problem internal to the engine, such as a clogged EGR valve.
3. The motor makes a whistling sound. This may be a problem. The engine is overheating. Check the cooling system. The exhaust system is clogged, the suction pipe is leaking or broken.
4. When accelerating, the engine will make a whirring sound, or when decelerating. In short, the sound will change as the regime changes. The possible reason is lack of power steering oil, fill it up. The generator bearings could be damaged. Problems with the power steering pump and water pump will produce similar noises.
5. A loud noise comes from the exhaust pipe. The main problem is the exhaust system. Check if the exhaust pipe is broken.
6. When the motor is running, it makes a clicking sound, as if something is hitting metal. When accelerating or driving, you may not hearnothing again. This may be caused by the cylinder valve, which can be changed by adjusting the valve. Lack of engine oil can also cause similar problems. Additionally, engine oil pressure is relatively low.
7. When you press the accelerator pedal, you will hear a clicking noise coming from the exhaust pipe. The sound may not be very loud and the car will not drive abnormally, as well as fuel consumption. will increase. It is recommended to check the muffler and exhaust pipe for damage.
8. The possible cause of the engine kicking noise is that there is dirt inside the engine. It is recommended to change the oil, filter and clean the engine. Others may be a valve problem.
9. There may be no problem while driving, but there will be a clicking noise when accelerating. It is recommended tocheck the ignition time setting. The engine may be overheating, have carbon deposits or oil. The quality is not good. Oil needs to be improved.
10. High-pitched noises, similar to squeaks... squeaks... especially when the air conditioner is on, the weather is cooler, and it is more obvious when you slow down. Possible reasons are that the drive belt is slipping and the driving direction is too high, reaching the limit. The belt is too loose, tightening the belt may solve the problem.
11. When driving at low speed or accelerating with the gas pedal, you will hear ringing and ringing noises under the engine, especially when the weather is cooler. It is recommended to raise the chassis and check if there is a heat shield between the exhaust and the ground. This is due to the aging of the heat shield, which can be solved by removing it.replacing or removing it.
The car has insufficient starting power
1. Is the three-way catalytic converter clogged? According to the topic description, increasing the speed is ineffective and the sound is louder than usual, which is very similar to the problem of a clogged three-way catalytic converter, because a clogged three-way catalytic converter will cause poor engine exhaust, which will increase the engine speed and lag much more than the depth of the accelerator pedal, making people feel dull and weak.
2. Is the ignition performance of the spark plug reduced? As the direct component that ignites the mixture, the performance of the spark plug directly affects engine power. When the engine accelerates, if the ignition performance of the spark plug decreases, high-intensity electric sparks cannot be generatedreated in time and the suddenly increased fuel injection volume cannot be completely burned, which prevents the engine from dynamically accelerating and becoming clogged.
3. Is fuel injection normal? I talked about spark plugs earlier, and next let's talk about fuel. In order for the gasoline to be injected into the cylinder in a good mist form, it must have a certain pressure as the base and the nozzle hole as the channel. Therefore, when the fuel pressure is too low or the nozzle hole is clogged, gasoline will be injected. the fuel will not be able to form a good mist and achieving sufficient fuel injection volume will prevent the engine from doing sufficient combustion work, resulting in poor acceleration and dullness.
Engine inspection precautions
1. Engine dipstick and Vl oil filler cap must be installed, otherwise operationof the engine will be affected.
2. The air intake pipe cannot be broken, and the hoop must be installed and tightened. Because air leakage will affect the signal of the air flow meter or intake air pressure sensor, thereby affecting the fuel injection quantity, making the engine idling unstable, prone to flameout and to poor power and acceleration performance.
3. The vacuum tube cannot be broken, bent or inserted incorrectly. Inserting the wrong vacuum tube will cause the engine to idle unsteadily, or even cause the cylinders to operate erratically and alternately.
4. The fuel injector should be seated securely and the seal ring should be intact. If the installation is not comfortable or the seal ring is damaged, poor sealing in the upper installation will cause oil leakage and cause serious accidents. A poor seal in the lower part causeswill cause air leaks, which will reduce engine vacuum and cause improper operation.
As the fuel tank cap vent hole is blocked, the fuel tank switch, fuel filter and fuel pipe between the fuel tank and carburetor are partially blocked. It cannot meet the requirements. The required amount of oil is not supplied, causing the mixture to be too thin and the engine to run weakly. If the air filter is not cleaned in time due to long-term use and is clogged, insufficient air volume will make the combustible mixture too rich, resulting in a decrease in engine power.
Safety Hazards:
1. Check if the air filter is clogged and clean it if necessary.
2. Check the throttle opening. When you press the accelerator pedal all the way down, the accelerator should be fully open.Otherwise, its cable needs to be adjusted or the pedal position sensor and throttle position sensor need to be learned.