What Are The Causes of Engine Malfunctions

As the core component of a car, once the engine malfunctions, it will seriously affect the normal use of the vehicle. Understanding the common causes of engine malfunctions can help us identify problems in a timely manner and take corresponding measures.

Wear and aging of components

With the increase of vehicle usage time and mileage, many internal components of the engine, such as pistons, piston rings, valve seals, etc., will gradually experience wear and aging. Wear of piston rings may lead to a decrease in cylinder sealing, resulting in reduced engine power, increased fuel consumption, and oil burning. However, the aging of valve oil seals can easily cause oil to enter the combustion chamber, which can also lead to oil burning faults and affect the normal intake and exhaust of the engine, resulting in insufficient combustion and greatly reducing engine performance.

Lubrication system issues

The lubrication system is crucial for the engine, just like the human blood system, providing necessary lubrication and protection for various components. Insufficient engine oil can intensify friction between components, leading to excessive wear and even damage. If the engine oil is not replaced for a long time, its performance will decrease, it will not be able to effectively lubricate, and it may also produce sludge and carbon deposits, block the oil circuit, and affect the normal operation of the engine. In addition, problems such as oil pump failure and clogged oil filters can also cause abnormal oil pressure, which in turn affects the lubrication effect of the engine.

Cooling system malfunction

The engine generates a large amount of heat during operation, and the cooling system needs to dissipate the heat in a timely manner to maintain normal operating temperature. Insufficient coolant can prevent the engine from receiving sufficient cooling, leading to overheating. Thermostat malfunction may cause poor coolant circulation, unable to open when it should be opened and not close when it should be closed, affecting heat dissipation efficiency. If the radiator fins are blocked by debris or the fan fails to operate properly, it will cause the engine's heat dissipation to be obstructed and the temperature to be too high. And if the engine is in a high temperature state for a long time, it will accelerate the aging and damage of components, and even cause serious faults such as cylinder pulling.

Ignition system malfunction

The ignition system is responsible for providing ignition energy to the engine, igniting the mixture, and enabling the engine to operate normally. As a key component of the ignition system, spark plugs can cause electrode wear, carbon deposition, and other problems if used for too long, resulting in insufficient ignition energy or unstable ignition, causing engine start-up difficulties, shaking, weak acceleration, and other malfunctions. If the ignition coil fails, it may not be able to convert low voltage into sufficient high voltage, causing the spark plug to fail to ignite properly, thereby affecting the normal operation of the engine. In addition, aging, short circuits, or open circuits in the ignition system can also cause abnormal transmission of ignition signals, leading to engine malfunctions.