What are the reasons for the Buick Excelle's inability to accelerate?
3 Answers
Buick Excelle's inability to accelerate when stepping on the gas pedal may be due to excessive engine oil, overly viscous engine oil, malfunctioning sensors around the engine, or faults in the transmission system. Below is a partial introduction about the gas and brake pedals: 1. Gas pedal: The gas pedal, also known as the accelerator pedal, is part of the car's fuel supply system. By controlling the amount of pedal depression, it regulates the throttle opening of the engine, controls the intake air volume, and the computer adjusts the fuel amount, thereby controlling the engine's speed. 2. Brake pedal: The brake pedal is the pedal that limits power, i.e., the pedal of the foot brake (service brake), used for deceleration and stopping. It is one of the five major operating components in car driving, with very high frequency of use. How the driver controls it directly affects driving safety. Brake pedal operations include: gradual braking (i.e., anticipatory braking), emergency braking, combined braking, and intermittent braking.
When I drove my old Buick Excelle, I also experienced sluggish acceleration. The common causes are just a few: if the fuel pump doesn’t supply enough fuel, you can’t speed up even when flooring the throttle—my friend’s car had this issue, and it was fixed after replacing the pump; a clogged air filter restricts airflow, making the engine weak; if the fuel injectors are clogged and fuel spray is uneven, throttle response becomes very sluggish; clutch slippage causes RPM to rise without a corresponding increase in speed, a common issue in older manual cars; and a blocked exhaust system or a faulty catalytic converter can also choke the engine. Oh, and a dirty fuel tank clogging the pump’s filter screen is another possibility—these are all real cases I’ve encountered while repairing cars.
I remember my neighbor, Master Zhang, who has been repairing cars for twenty years, said that the Buick Excelle's lack of acceleration is mostly due to these issues: air leaks in the fuel supply line or insufficient fuel pressure can lead to inadequate fuel injection; aging ignition coils causing misfires, making the car jerk and accelerate weakly; a clogged catalytic converter makes the engine feel like it's running with a mask on; the most easily overlooked issue is a stuck brake caliper, which is like driving with the brakes on; vacuum tube leaks can also disrupt the air-fuel mixture. He suggested first reading the fault codes, then checking the fuel pressure, and finally testing the cylinder pressure, especially for older cars, these checks are crucial.
