First check if level of antifreeze fluid in car is correct. The correct position of liquid level should not be below bottom line and not above top line. This is right liquid level position!
Second step: whether position of liquid level in a glass of water, correct position of liquid level should not be lower than bottom line and not higher than middle of top line - this is appropriate position of liquid level!
Third step: Whether fluid level matches brake fluid. The correct fluid level should be no lower than bottom line and no higher than middle of top line. If each vehicle's brake fluid level is below bottom line, handbrake indicator on instrument panel will automatically illuminate to alert driver.
Fourth step: car battery The car battery inspection is divided into 3 small steps. The first step is to check if there is not enough electrolyte in battery (with exception of maintenance-free batteries). step is to check "positive pole" and "negative pole" of battery. If head is loose, third step is to clean oxide on head of two battery poles!
Step 5. Check and change engine oil. At this point, first pull out dipstick to check liquid level in engine oil, and then pay attention to color of engine oil. If it is thick, like sesame sauce and water, it should be replaced. .
Step 6: Check or replace air filter, this work is very simple, just remove filter for inspection, if it is not very dirty, it can be blown out with a high pressure gun without replacement!
Step 7: Check and clean radiator and air intake. This work needs to be checked after spring, because after spring there will be a lot of earrings and other debris on radiator. engine must be blown out with a high-pressure gun at a workshop!
Step 8: Check rubber hoses exposed in car's engine compartment (including: plumbing, oil, air) for aging cracks, wires and glue!
Step 9: Check if screws of parts in car's engine compartment are loose, and if so, tighten them immediately!
Step 10. Check if belts in engine compartment of car (camshaft belt, water pump belt, crankshaft belt) are strong enough (determined by special devices)