What Causes Better Power When Cold and Poor Power When Hot?
1 Answers
Better power when cold and poor power when hot could be due to carbon deposits inside the engine. It is recommended to check the throttle body and spark plugs. More details are as follows: 1. The reason for a dirty throttle body with carbon deposits is that when the car is started, air passes through the air filter and reaches the throttle body. This air mixes with fuel for combustion, which is never 100% efficient. The incompletely burned exhaust gases leave residues in the intake tract and throttle body, forming carbon deposits. Additionally, prolonged use of the air filter can produce impurities that adhere to the throttle body, accumulating over time to form sludge. This can lead to poor engine acceleration, increased fuel consumption, unstable idle, and fluctuating RPMs. 2. Since the throttle body is the 'throat' of the car and the air-fuel mixture cannot burn completely, carbon deposits in the throttle body are inevitable. Therefore, cleaning is necessary. 3. During use, spark plugs develop normal carbon deposits on their electrodes and insulator skirts. If these deposits are not cleaned over time, they can accumulate to the point of causing electrode leakage or even failure to spark. Hence, carbon deposits should be cleaned regularly, not just when the spark plugs stop working. 4. There are many types of spark plugs, each with its own economic lifespan. Using them beyond this lifespan can negatively impact engine performance and fuel efficiency. Research shows that as spark plugs age, the center electrode tip becomes rounded, and the side electrode develops a concave shape, increasing the electrode gap and making discharge difficult, which affects normal engine operation.
