What is the reason for normal acceleration in neutral but abnormal acceleration in gear?
2 Answers
Normal acceleration in neutral but abnormal acceleration in gear is caused by a faulty fuel pump, which requires professional inspection, repair, or replacement. Below are specific details about the fuel pump: Principle: The fuel pump is a component that draws gasoline from the fuel tank and delivers it through pipelines and the fuel filter to the float chamber of the carburetor. It is because of the fuel pump that the fuel tank can be placed at the rear of the vehicle, far from the engine and below the engine. Application: In summary, whether it's airplanes, rockets, tanks, submarines, drilling, mining, trains, ships, or daily life, pumps are needed everywhere and are in operation everywhere. This is why pumps are classified as general machinery and are a major product in the mechanical industry.
I encountered the exact same issue when repairing my car last year. The engine revs up smoothly in neutral, but once in gear, it just falters. It's most likely the clutch disc is worn out, just like a bicycle chain slipping when pedaling. When in gear, the engine has to pull the entire vehicle; if the clutch can't grip properly, power loss occurs. Try starting on a slope first—if you smell burning and the car rolls back, it's pretty much confirmed the clutch is done for. It could also be a stuck throttle cable, but that's less probable. Ignoring this kind of fault is particularly damaging to the car, and eventually, you'll end up replacing the entire pressure plate assembly. Hurry up and find a repair shop to lift the transmission—a roadside stall's 500-yuan labor fee should be more than enough.
