What Causes Reduced Engine Power in Buick Vehicles?

2 Answers
MacEliana
07/24/25 3:49am
Poor gasoline quality, clogged fuel lines, and engine overheating are all reasons for reduced engine power in Buick vehicles. Here are the details: 1. Poor gasoline quality and clogged fuel lines: Using low-quality gasoline (with excessive impurities such as mixtures) is a common cause of this issue in many vehicles, whether new or old. Excessive impurities in gasoline can easily lead to carbon buildup, and in severe cases, clog the fuel lines, resulting in poor fuel supply and reduced power. It is recommended to check the car's fuel filter every 60,000 kilometers to ensure it is not too dirty and avoid fuel line blockages. 2. Engine overheating: Insufficient engine oil, low engine coolant levels, or malfunctioning engine cooling systems can increase the engine's load, leading to poor heat dissipation. Engine overheating reduces lubrication effectiveness, increases mechanical wear, lowers engine power, and raises fuel consumption.
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DiClaire
08/10/25 11:24pm
Last time I drove my Buick to the plateau for a trip, I encountered insufficient power. When climbing slopes, even pressing the accelerator to the floor couldn't increase speed. Later, it was found that the turbocharging system had issues. Buick cars usually experience power loss in these situations: excessive carbon deposits can affect engine efficiency, especially after long-term low-speed city driving which is most prone to carbon buildup; fuel system problems are also common, such as clogged fuel filters or insufficient fuel pump pressure leading to inadequate fuel supply; ignition system failures like aging spark plugs or damaged ignition coils can affect combustion; air filters not replaced for too long can cause insufficient air intake; sensor failures, especially broken oxygen sensors or air flow meters, can cause the car's computer to incorrectly adjust parameters. It's recommended to first check simple areas like carbon deposits and filters, and if that doesn't help, then go to a professional shop to read the fault codes.
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