There are two fundamental reasons for the loud engine noise: excessive carbon deposits in the engine. The engine oil is inappropriate or the oil is dirty.
In addition, most of the engine noise is caused by abnormal engine noise:
1. Engine lower protection Board screws are loose. A relatively common minor fault is tightening or adjusting the engine lower guard plate screws.
2. The engine claw pads are aging. The claw pads play a role in supporting the engine and can only be replaced after aging.
3. The plastic parts in the engine compartment are loose. For example, the engine cover, air intake pipe, etc. can be tightened.
4. The engine belt makes abnormal noise. Including power belts, generator belts, etc. If the belt is old or is too loose or too tight, it will produce abnormal noise. Replace or adjust the tightness.
5. Engine knocking. There is too much carbon deposit inside the engine or the fuel usage is substandard. Clean carbon deposits and replace fuel.
6. Abnormal valve noise. Especially after the car is cold, the valve will make a "click-click" sound, and then it will be fine when the car is warmed up. This is because the engine oil is deposited in the oil pan and is not "pressed" in time when the engine is started. But if the valve keeps ringing, you should consider changing to a thicker engine oil (for how to choose engine oil, please refer to "How to Choose the Engine Oil Correctly").
7. Engine "backfire" failure. The engine will make a "puff-puff" sound, which may be caused by excessive carbon deposits on the valves or improper timing adjustment. Clean the carbon deposits on the valves and adjust the valve timing.
8. The engine is missing a cylinder. If a certain cylinder does not ignite, most likely the spark plug or ignition module is faulty and can be replaced.
9. Abnormal noise from the bearing. There will be regular "buzzing" sounds in bearings, such as engine tensioners, idlers, generators, etc. This can be solved by replacing relevant parts.
Great Wall Fengjun pickup truck cannot be serviced for the first time after 2,000 kilometers. Maintenance is usually performed once every 5,000 kilometers or three months.
Great Wall Pickup Fengjun car maintenance is a preventive work that inspects, cleans, replenishes, lubricates, adjusts or replaces Great Wall Pickup Fengjun car parts within a certain period of time.
The period between the new Great Wall Pickup Fengjun being driven on the ground and the first warranty period is the running-in period. During the running-in period of the car, the gears of the engine, gearbox, etc. have not yet been run-in, so the car cannot be driven too fast. Be sure not to exceed 100 yards, preferably no more than 80 yards. During the first insurance period, you need to check the car's tire pressure, tire positioning and balance, and safety system inspections.
Extended information:
The maintenance taboos for the Great Wall Pickup Fengjun 5 are as follows:
1. Avoid getting carburetor cleaner on it. Most carburetor cleaners contain methyl chloride, aromatics and ethanol. These substances are all toxic to a certain extent. Therefore, these substances are very dangerous if they are inhaled into the nose or splashed on the skin and eyes. .
2. Avoid mechanical damage. Car maintenance is related to various aspects. When performing maintenance operations, obvious work signs should be set up to prevent people from being injured due to misoperation. When starting the car, pay attention to the gear position of the transmission to prevent the car from accidentally moving and injuring people.
3. Avoid catching fire. When maintaining a car, you often need to use oil, cleaning agents and other flammable and explosive items. At this time, do not forget to take fire-fighting measures and prepare a fire extinguisher, just in case. Do not smoke near the fuel tank and battery, because the flammable gas escaping from the fuel tank and the hydrogen gas escaping from the battery can easily ignite.
Ifeng.com - Don’t be fooled by 4S stores, this is the correct schedule for car maintenance
Baidu Encyclopedia - Car Maintenance