Engine health
We check the technical condition of a used car. Two year old car with 20 miles. kilometers may be in worse technical condition than a car that has traveled 100. kilometers in ten years. It all depends on how the owner treats the car and his driving style.
We check the technical condition of a used car.
Two year old car with 20 miles. kilometers may be in worse technical condition than a car that has traveled 100. kilometers in ten years. It all depends on how the owner treats the car and his driving style.
An underage car with low mileage (for example, a three-year-old car with 20 km) at a reasonable price is a bargain. However, such a copy should cause not only enthusiasm, but above all vigilance. Perhaps the car only looks well-groomed, but in fact its components are very worn out, or maybe the previous owner just pulled up the odometer.
If you decide to buy such a car, you have to detective work. By checking several elements, you can find out if the mileage is adequate for the technical condition of the car.
Compression diagram
First you need to go to the garage and ask the mechanic to make a diagnosis. Pay attention to the compression diagram. If the readings deviate significantly from the norm, this means that the engine components (rings, pistons, cylinder liners) are very worn out and the engine is only suitable for overhaul. The compression is correct when the chart shows the correct values and is the same for all cylinders. Comparative values can be obtained from a specialized company.
Захват
The next step is to check the general condition of the engine. Metal filings in the engine oil (check with a dipstick) indicate a stuck bearing. If gas comes out of the oil filler cap (remove the cap) when the engine is running, this usually means that the rings are damaged. A loud knock indicates that the engine is completely worn out. Drops of water in the oil (also check on the dipstick) indicate damage to the cylinder head.
охлаждение
Another thing is to check the cooling system. Unscrew the expansion tank cap and check that the coolant is not oily or rusty. In both cases, the radiator is damaged. Pay attention to the tightness of the radiator and water supply pipes (white traces of scale). If the water in the radiator gurgles while the engine is running, the cylinder head gasket is damaged.
In conclusion
If you notice any of these symptoms, then the car's engine is badly worn and needs to be repaired. It may also turn out that there are other more serious injuries that you could not find on a cursory examination.
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