What Causes Reduced Engine Power in Cars?
1 Answers
Below is an explanation of the causes of reduced engine power in vehicles: 1. Fuel supply system; 2. Ignition system; 3. Cylinder compression pressure; 4. Engine overheating; 5. Excessive or insufficient lubricating oil in the crankcase, deteriorated or contaminated lubricating oil, or clogged oil passages. Additional details on the causes of reduced engine power: 1. Fuel supply system issues: Blockage of the fuel tank vent hole, fuel tank valve, fuel filter, or fuel lines between the tank and carburetor can restrict fuel supply, resulting in an overly lean air-fuel mixture and reduced engine performance; 2. Ignition system problems: Incorrect ignition timing or premature ignition can cause early combustion and detonation of the air-fuel mixture. Faults in the ignition system may lead to spark plug misfires or weak sparks; 3. Cylinder compression pressure: Severe wear of pistons, piston rings, or cylinders increases clearance between components, reducing sealing performance. This causes cylinder head leakage and lowers compression pressure; 4. Engine overheating: Incomplete combustion of the air-fuel mixture due to various reasons leads to excessive carbon buildup in the combustion chamber, poor heat dissipation, and increased engine load, resulting in overheating; 5. Crankcase lubrication issues: Improper oil level, deteriorated or contaminated lubricating oil, or clogged oil passages can negatively affect engine power output.
