What Causes the Engine to Roar Loudly When Accelerating?

[Stacy]

Here are the reasons why the engine roars loudly when accelerating: Excessive Engine Oil: Too much engine oil increases the resistance during instantaneous operation, raising the crankshaft's rotational resistance and reducing the engine's output power. Additionally, excess oil may enter the combustion chamber and participate in combustion, leading to oil burning, blue smoke emissions, and increased fuel consumption. Incorrect Engine Oil Type: Using the wrong engine oil type, such as switching from full synthetic oil to mineral oil, can cause issues. Therefore, always change the oil at reputable shops using genuine products. Counterfeit or low-quality oil can severely damage the engine. Following the oil type recommended in the maintenance manual is generally safe. Engine Overheating: Overheating can cause the engine to lose power. If the engine operates for extended periods, leading to surface overheating, the cooling system may fail. The first step is to check the cooling system. If there's a problem with the cooling system, it might cause exhaust blockage, as vacuum tubes could potentially rupture. In such cases, steam or hot air may escape from the engine, producing loud noises.