What Causes a Car to Lose Power?

[BellaAnn]

Car power loss may be caused by issues in fuel, electrical, or mechanical systems. Specific reasons are as follows: Fuel system failure: A clogged or water-logged air filter reduces airflow, leading to an overly rich air-fuel mixture and incomplete engine combustion, resulting in poor acceleration. In this case, the exhaust pipe emits heavy black smoke. Cracks in fuel lines or loose connections causing air leaks, along with insufficient fuel pump pressure, can lead to poor fuel delivery and affect acceleration performance. Electrical system failure: Problems with the mass airflow sensor can reduce air intake, causing the air-fuel mixture to become too rich or too lean, affecting acceleration performance. Mechanical failure: Wear and tear on engine valves, cylinder liners, pistons, or piston rings can result in insufficient cylinder pressure. Excessive intake valve clearance or insufficient exhaust valve clearance can cause cylinder misfires, affecting acceleration performance.