Application

Performance: The vehicle engine starts abnormally slowly or cannot start at all, and it may take multiple attempts to start. Cause: Problems with the starting system or battery. Example: The owner found that the engine made a "crackling" sound and started slowly every morning when starting the car. Later, it was found that the battery was low or the starter motor was faulty. Parts that need to be replaced: Battery: If the battery is aging or low in power, it needs to be replaced. Starter motor: If the starter motor is damaged, the starter motor needs to be replaced. Ignition switch: If the ignition switch fails, it may cause failure to start.

Performance: When the engine is running, the body or steering wheel will shake significantly, especially when idling or driving at low speed. Cause: Failure of the ignition system, fuel system or internal engine parts. For example: The owner found that the engine shook severely when the vehicle was in neutral. After inspection, it was found that the spark plug was aging or the fuel injector was clogged. Accessories that need to be replaced: Spark plug: If the spark plug is worn or seriously carbonized, it will cause incomplete ignition and need to be replaced. Fuel injector: If the injector is clogged or damaged, it may cause the engine to run unsteadily and needs to be cleaned or replaced. Engine bracket: If the engine bracket is worn or damaged, it may cause the engine vibration to increase.

Performance: The engine makes abnormal noise during operation, such as metal friction, knocking, etc. Cause: The internal parts of the engine are worn or lack of oil. Example: The owner heard a "bang bang" sound in the engine. After inspection, it was found that the connecting rod or piston, piston ring, was worn. Accessories that need to be replaced: Piston ring: Wear or damage to the piston ring will cause engine knocking sound and need to be replaced. Connecting rod: Damaged or loose connecting rod will cause abnormal noise and need to be replaced. Crankshaft: If the crankshaft is bent or worn, it may also cause abnormal engine noise and needs to be replaced. If the problem is serious and cannot be repaired, the engine needs to be replaced.

Performance: The owner feels that the vehicle is underpowered when accelerating, the engine speed rises slowly, or the acceleration response is delayed. Cause: Problems with the fuel system, air system or transmission system. Example: The owner found that the speed did not increase and the power was insufficient when accelerating. After inspection, it was found that the air filter was clogged or the fuel pump was faulty. Accessories that need to be replaced: Air filter: A clogged air filter will affect the air flow, resulting in weak acceleration, and needs to be replaced regularly. Fuel pump: A fuel pump failure will cause insufficient fuel supply, resulting in weak acceleration, and the fuel pump needs to be replaced. Fuel filter: A dirty and clogged fuel filter will affect the oil flow, resulting in poor acceleration, and needs to be replaced.

Performance: The pointer of the engine temperature gauge points to the red line, or the water temperature warning light is on, and the engine is overheating. Cause: Cooling system failure, which may be insufficient coolant, radiator or water pump failure. Example: The owner found that the temperature gauge showed that the engine temperature was too high. After inspection, it was found that the coolant was leaking, or the water pump could not work properly. Parts that need to be replaced: Water pump: Water pump failure or impeller damage will cause poor coolant circulation and need to be replaced. Radiator: Radiator damage or blockage will cause poor heat dissipation and need to be replaced. Thermostat: Thermostat failure may cause the cooling system to not work properly and needs to be replaced.

Performance: The engine suddenly stalls during driving, or cannot run stably. Cause: Fuel supply or ignition system failure, or engine control system problem. Example: The owner found that the vehicle suddenly stalled while driving, and the fuel pump failure or ignition module failure was found after inspection. Parts that need to be replaced: Fuel pump: Fuel pump failure causes fuel supply interruption and the engine cannot run normally, so it needs to be replaced. Ignition module: Failure of the ignition module may cause the engine to fail to ignite normally and needs to be replaced. Crankshaft sensor: Failure of the crankshaft sensor may cause the engine to stall and needs to be replaced.

Performance: Excessive black, blue or white exhaust emissions, exceeding emission standards. Causes: Incomplete fuel combustion, carbon deposits inside the engine, exhaust gas recirculation system failure, etc. Example: The owner found that the vehicle emitted black smoke when accelerating. After inspection, it was found that the fuel injector or air flow meter was faulty, resulting in incomplete fuel combustion. Accessories that need to be replaced: Oxygen sensor: Oxygen sensor failure will cause incorrect fuel mixture ratio, causing emission problems, and need to be replaced. EGR valve (exhaust gas recirculation valve): EGR valve blockage or damage will cause unqualified emissions and need to be replaced. Fuel injector: Fuel injector blockage or damage will cause the mixture to be too rich, emitting black smoke, and need to be replaced.

Performance: "Check Engine" or engine warning light on the dashboard is on. Cause: The engine management system detects a fault, which may be a sensor failure, emission system failure, etc. For example: The owner found that the engine warning light on the dashboard was on. After diagnosis, it was found that the oxygen sensor or intake temperature sensor was faulty. Accessories that need to be replaced: Oxygen sensor: Failure of the oxygen sensor will cause the engine control module to be unable to adjust the fuel mixture ratio and needs to be replaced. Intake temperature sensor: Failure of the intake temperature sensor may cause engine performance to decline and needs to be replaced. Crankshaft sensor: If the crankshaft sensor is damaged, the engine cannot operate normally and needs to be replaced. The above are some common automobile engine failure manifestations, causes and specific parts that need to be replaced. Regular maintenance and inspection can help detect problems early and avoid larger failures. If the above failure manifestations occur, timely inspection and replacement of the corresponding parts can effectively extend the service life of our engine.