What are the reasons for a car lacking power and high fuel consumption?
1 Answers
The reasons for a car lacking power and high fuel consumption are as follows: Fuel system malfunction: A clogged or waterlogged air filter reduces air intake, leading to an overly rich air-fuel mixture, incomplete engine combustion, and poor acceleration. In this case, the exhaust pipe emits heavy black smoke. Cracks in the fuel line or loose connections causing air leaks, along with insufficient fuel pump pressure, result in poor fuel supply and affect acceleration performance. Electrical system malfunction: Issues with the air flow meter reduce air intake, causing the air-fuel mixture to be either too rich or too lean, affecting acceleration performance. Damage to individual cylinder spark plugs, meaning a misfiring cylinder, impacts acceleration performance. Overheating or a faulty temperature sensor also affects acceleration performance. A clogged catalytic converter or a faulty oxygen sensor can cause poor engine acceleration. Mechanical malfunction: Wear and tear on engine valves, cylinder liners, pistons, and rings lead to insufficient cylinder pressure. Excessive intake valve clearance, insufficient exhaust valve clearance, or damaged intake and exhaust valves can cause misfiring cylinders, affecting acceleration performance. Wear on the timing belt (chain), causing ignition timing to be either too early or too late, also impacts acceleration performance.
