What are the reasons for the BYD F3 jerking and failing to accelerate when pressing the throttle?
1 Answers
BYD F3 jerking and failing to accelerate when pressing the throttle can be caused by the following reasons: 1. Engine misfire: An engine misfire can lead to insufficient power and acceleration, with noticeable gaps in exhaust emissions and severe shaking, resulting in a jerking sound similar to a tractor. 2. Causes of engine misfire: Mainly due to excessively rich air-fuel mixture or poor spark plug performance. Below are the details: 1. Overly rich air-fuel mixture causing jerking and failure to accelerate: Under normal conditions, the engine's combustible air-fuel mixture ratio is Air/Fuel = 1/14.7. Too little air or too much fuel can cause the mixture to exceed this ratio. An overly rich mixture can lead to knocking sounds, jerking, and weak engine acceleration. Causes of insufficient air include faulty air flow meters, carbon buildup in the throttle body, throttle motor failure, clogged air filters, faulty oxygen sensors, etc. Causes of excessive fuel may include faulty fuel pumps, leaking fuel injectors, faulty coolant temperature sensors, etc. 2. Poor spark plug performance causing jerking and failure to accelerate: Modern car engines use computer-controlled ignition timing. Issues such as incorrect ignition timing, faulty ignition coils, insufficient voltage from the alternator or battery, or changes in spark plug gap can lead to poor or failed combustion of the air-fuel mixture, resulting in misfires and jerking sounds.
