4 reasons why car engines soon need to be "operated on"

1. Using the wrong engine oil

When the engine is not running, the oil flows down to the crankcase instead of remaining in the engine parts such as the pistons and cylinders. When starting, these parts lack lubrication and are therefore not protected. The oil needs time to be pumped from the crankcase and then spread over the friction surfaces.

With the habit of using the wrong engine oil, not having enough adhesion to protect the engine right from the start, the wear and tear continues for a long time, leading to the deterioration of the vehicle.

Lubricating oil is like the “blood” circulating inside the engine, so choosing a quality, suitable product will help the engine run smoothly, have a long “life”, and avoid many damages. Therefore, car owners should learn about lubricating oil to ensure adhesion even when the engine is not running.

2. Engine oil loss

There are many reasons why a car's engine loses oil, but the two main problems are oil loss due to leakage to the outside and oil loss due to oil entering the combustion chamber and being burned with the fuel.

• Phenomenon of oil leaking outo Working for a long time, the heat from the engine causes the seals and oil seals to harden and lose their sealing ability; whenOil leakage into the combustion chamber is due to damage to some internal engine parts such as: worn piston rings, valve tails, valve guides and valve oil seals, causing engine oil to leak into the combustion chamber through these paths.

3. Coolant loss

When the engine lacks coolant, it will overheat. The engine will start to make noise, the power will drop because the temperature and pressure in the combustion chamber exceed the allowable level of the fuel octane index, the phenomenon of combustion occurs before the spark plug fires. The systems are no longer in sync, the rings, pistons and bearings will be damaged.

When the temperature increases, the components in the engine expand at different rates. The joints are prone to jamming or binding. The enlarged piston scratches the cylinder surface. If the flywheel rotates at high speed and the piston seizes, the connecting rod will bend. The hot exhaust valve gets stuck in the guide pin, causing the inner surface of the pin to be scratched, overloading the gas distribution system.

4. Engine hydrolock

Hydrolock is a phenomenon where water enters the engine's air intake, causing the vehicle to suddenly stall. In this case, if the driver tries to start the engine, water will be sucked deep into the engine, leading to engine damage.

The consequences of water hammer are often very serious, because the damage is in the engine - the heart of the car. The repair cost in case of water hammer is often very large, at least several tens of millions of dong when only the connecting rod has to be replaced, and can be up to several hundred million dong if the entire engine assembly has to be replaced.