Is there a crack around the throttle?

The car has run for 60 thousand kilometers, and these three places are not broken, so it should be replaced.

First, replace "five oils, four filters, three liquids and one water"

1 and "five oils" are engine oil, brake oil, gearbox oil, steering assist oil and clutch oil respectively.

At present, synthetic engine oil is widely used for family cars, and it should be replaced once every 1 km or 1 year. Urge them on time.

Needless to say, changing the oil, but other items are easy to ignore.

Brake oil is generally checked and replaced every 2 years or 40,000 kilometers. It is found that the braking distance is obviously longer and unstable, and the brake pedal becomes soft. At this time, it is necessary to check the brake oil and open the lid of the brake fluid. If the brake oil becomes turbid and black, it needs to be replaced in time.

Generally, repair shops check the water content of brake oil through brake oil detector. The water content is normal in the range of 0.5%-2.5%, and it needs to be replaced immediately if the water content is greater than 3%.

Generally speaking, the manual gearbox is changed once every 3 years or 60,000-80,000 kilometers, and the automatic gearbox is changed a little earlier, about 2 years or 60,000 kilometers. Of course, this is a rough cycle, and it still needs to be determined according to factors such as vehicle type, gearbox structure and driving habits. As for the steering power-assisted oil, it is mainly used for vehicles above 10, and the mechanical power-assisted oil is widely used. However, the current family cars are generally electronically assisted and do not need booster oil. Similarly, clutch oil is mainly used for manual transmission vehicles. For most vehicles, brake oil and clutch oil are used in the same oil pot, and the replacement cycle is the same. Of course, the situation is different for different models, such as off-road vehicles and differential oil.

2. The "four filters" are oil filter, fuel filter, air conditioner filter and air filter.

Usually, the oil filter element is replaced together after oil change. In fact, the replacement cycle is similar to other filter elements, and it is replaced every 20,000 kilometers or 1-2 years. However, this is not a rigid requirement, it depends on the actual use.

For example, if you often drive in mountainous areas and unpaved roads and the dust is heavy, you can check and replace the air filter in advance. For another example, if the air conditioner is hardly turned on for one year, the replacement cycle of the air conditioner filter can be appropriately extended.

3. "Three liquids 1 water" are antifreeze cooling liquid, battery liquid and glass water respectively.

The replacement cycle of antifreeze in the original car is very different. Some vehicle maintenance manuals require replacement every 2 years or every 40,000 kilometers, but many vehicles use long-term antifreeze and replace it every 5 years or 654.38+ 10,000 kilometers. This category accounts for the vast majority of vehicles.

Some models use "permanent" antifreeze, which is replaced every 65,438+00 years or 200,000 kilometers. For example, Honda, Audi and other models, and even some car companies directly said that there is no need to replace antifreeze, and antifreeze has not been replaced in the maintenance manual. Antifreeze is very important, so many new cars use high-performance antifreeze with long cycle. For daily vehicles, you can visually check the remaining amount of antifreeze. The antifreeze of most models is purplish red, and the antifreeze pot is marked with MAX maximum liquid level and MIN minimum liquid level respectively. When the liquid level is lower than min, add antifreeze in time.

Second, the tire replacement cycle

Generally speaking, automobile tires can be used for 5-8 years or driven for 5-65438+ 10,000 kilometers. These values are not absolute and need to be determined according to actual use. Road conditions, driving habits, maintenance, tire quality and other factors will affect its specific life. Wear indicator points are usually designed in tire grooves. If the tire is found to be seriously worn, it needs to be replaced in time when it approaches the indicated point. Check the tires for cracks and bulges every day. If the crack is large and deep, it must be replaced in time.

Third, the braking system.

The braking system mainly depends on brake pads, brake oil and brake discs. As mentioned above, brake oil should be checked and replaced in time. The thickness of brake pads is generally around 1.5cm. When the thickness of brake pads is only around 1/3 with naked eyes, it is necessary to pay attention to timely replacement at all times. Some models are invisible to the naked eye because of the wheel hub, and the thickness of the brake pad can only be seen after disassembly.

In the case of front-wheel drive, front-wheel brake pads generally wear faster than rear wheels. Check every 40,000-60,000 kilometers and replace it in time if necessary. Similarly, the rear wheel of rear wheel drive wears faster, so it is necessary to pay more attention to the rear wheel brake pads. As for brake discs, the general replacement cycle is about twice as long as that of brake pads. In daily driving, if you find that the braking distance is obviously longer, you feel a little tired when stepping on the brakes, and the brake pedal is a little soft. At this time, the friction of the brake pads may be insufficient and unstable. Check brake oil and brake pads in time. You can also judge that there are wear limit marks on both sides of the brake pad by listening to the sound. When the brake pad is worn to the limit mark, stepping on the brake will make a hissing or squeaking sound. But sometimes there is water on the brake disc or it is not clean, especially when it rains and clears up in winter, which will make abnormal noise when driving, and it will return to normal after stepping on the brakes several times. This is normal.

Fourth, other parts and components.

In addition to the above common wearing parts, there are daily maintenance items such as spark plugs, ignition coils, timing chains and three-way catalysts. There are many kinds of spark plugs according to materials, such as ordinary nickel alloy spark plugs, which generally need to be inspected and replaced after 20-40 thousand kilometers, platinum spark plugs, iridium platinum spark plugs and so on. For example, iridium platinum spark plugs need to be inspected or replaced after driving more than 65,438+10,000 kilometers, and even many car companies directly say that their models do not need to be replaced.

Automobile ignition coil generally has a long service life, and it only needs to be replaced once when it is more than 654.38+ 10,000 kilometers. As for timing belts and timing chains, many models used timing belts in the past few years, about 8,543.8+10,000 kilometers for inspection and replacement, but now most models use timing chains, and the replacement cycle is relatively long. Many car companies claim that they don't need to be replaced for life.

Three-way catalytic converters are generally inspected and cleaned for 8-65438+ 10,000 kilometers. Generally, when the vehicle is older, due to the problem of the three-way catalyst, the exhaust gas detection may not pass, so it needs to be checked, cleaned or replaced.

As for maintenance items, such as engine carbon deposit, fuel injector, throttle valve, fuel pipe, etc., it can be judged according to the actual vehicle use and specific vehicle problems. Many 4S shops or repair shops recommend these maintenance items, mainly because of high profits.

In short, when the mileage of a car reaches about 60,000 kilometers, it is necessary to pay attention to items such as "five oils, four filters, three fluids, one water", tires, brake pads and brake oil, and replace them in time, while other parts need to be inspected.