How often does the car need major maintenance?

Because most of my friends don't know this thing, so check your car to see if it is a timing chain or a timing belt. If it is a maintenance-free timing chain, it is not needed. If it is a timing belt, it is recommended to replace it 60,000 kilometers, and it should not exceed 80,000 kilometers at the latest. Major maintenance generally includes: oil change, mechanical filter, air filter, air conditioning filter element, steam filter, spark plug, brake oil, booster oil, gearbox oil, antifreeze, throttle valve cleaning, air inlet cleaning, fuel injector cleaning and three-way catalytic converter cleaning. Check brake pads, tires, chassis, etc.

It's oil, oil filter, air conditioner filter, tire pressure, etc. Generally speaking, the cost of minor maintenance is not very high. If it's a family car with a price of 654.38+10,000 yuan, it's probably around 500 yuan. Because most of my friends don't know this thing, I check my car to see if it is a timing chain or a timing belt. If it is a maintenance-free timing chain, it is not needed. If it is a timing belt, it is recommended to replace it for 60,000 kilometers, and it should not exceed 80,000 kilometers at the latest.

The accelerator of American cars gets dirty easily. The engine idle speed of Focus is often unstable at 65,438+05,000 km, while Japanese cars and Korean cars are normal at 50,000 km. You only need to clean the throttle once. Serious carbon deposition will cause engine idling vibration, poor power and increased fuel consumption. After troubleshooting the spark plug, ignition coil and oil system, it is basically determined that the possibility is carbon deposition, and it can be cleaned normally at this time.

In the harsh environment of high pressure, the shelf life will be greatly shortened and the performance will be greatly reduced. Over time, the engine is unprotected. In order to prevent impurities from mixing with engine oil and causing oxidation, the oil filter element produces colloid and sludge to block the oil circuit. Some friends can't drive 2000 kilometers in half a year, and the frequency is very low. I wonder if I can open it for another six months for maintenance. Imagine that an unopened bottle of engine oil has a shelf life. What's more, the oil has been used for half a year, and it is necessary for friends who use the car very frequently to maintain it for half a year.