There are usually two reasons for the crackling noise after starting the engine:
First, if the car has not moved for a long time, the engine oil will flow back to the oil pan and valve not having the seal and lubrication of the engine oil when starting the vehicle, causing a sizzling sound. This is normal.
Second, there is an abnormal noise from the belt when starting. In this case, it is necessary to check in time whether there is a problem with the belt.
If there is an abnormal noise coming from the belt, check the assembly first. The abnormal noise may be caused by friction between the timing belt and the timing cover. You can loosen the official case screws by half. turn around to see if the abnormal noise disappears.
Secondly, you can check the generator belt usage. The accessory belt may causean abnormal noise. The tightening of the timing transmission part is too tight. Remove the power generation and air conditioning power belts to rule out whether the problem is with these two belts.
There is a problem with the timing belt tensioner and it usually needs to be replaced along with the timing belt. The noise may be caused by a problem with some of the motor bearings. The specific source of the sound must be carefully identified. If the specific cause cannot be found, it is recommended to go to a professional repair shop for inspection to determine the cause.
What is happening with the crackling noise coming from the engine?
There are usually two reasons for the crackling noise after starting the engine engine:
First, if the car has not been moved for a long time, the oil will return to the oil panisland. When the vehicle starts, the valves will lack seal and lubrication. oil, causing a sizzling sound. It's normal.
Second, there is an abnormal noise from the belt when starting. In this case, it is necessary to check in time whether there is a problem with the belt.
Method
If there is any abnormal noise coming from the belt, check the assembly first. The abnormal noise may be caused by friction between the timing belt and the timing cover. You can loosen. the screws on the official case. Check with a half turn if the abnormal noise disappears.
Secondly, you can check the generator belt usage. This may be an abnormal noise caused by the accessory belt. The tightening of the timing transmission part is too tight. Remove the power generation and air conditioning power belts to rule out if the problem is in these two yardskings. There is a problem with the timing belt tensioner and usually needs to be replaced along with the timing belt.
1. The motor makes a "grinding" sound, which sounds like steam or air coming out of the motor. Typically, after hearing this sound, the engine will quickly lose power. Possible problem, engine overheats, check cooling system. The exhaust system is clogged, the suction pipe is leaking or broken.
2. When I stepped on the accelerator, I found that the acceleration was not obvious, there was a lack of power, and the engine made a hysterical noise. The times most likely to occur are when the engine is hot or cold, or when it is low on oil. The causes of these problems can be divided into air filter, spark plug, ignition wire, gasoline, fuel filter, carburetor, oil pump and other problems. Vcheck if the air filter is dirty, if the spark plug is old and needs to be replaced, if the ignition coil is brokenYes, the gasoline is not clean, for example, there is water in the oil line. Also check the oil pump.
3. When accelerating, the engine will make a whirring sound, or it will also sound 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.