What are the reasons for the engine shaking during startup of the BYD F3?
4 Answers
The reasons for the engine shaking during startup of the BYD F3 are: 1. Malfunctioning water temperature sensor; 2. Carbon buildup on valves and intake ports; 3. Fuel quality issues; 4. Deviations in cylinder conditions; 5. Unstable oil pressure. The engine is applicable both as a power generation device and can refer to the entire machine including the power device (such as gasoline engines, aircraft engines). The BYD F3 is a compact 4-door, 5-seater sedan with dimensions of 4533mm in length, 1705mm in width, and 1490mm in height, and a wheelbase of 2600mm. This car is equipped with a 1.5L naturally aspirated engine and a 5-speed manual transmission, delivering a maximum power of 80 kW and a maximum torque of 148 Nm, with a front-engine, front-wheel-drive layout.
As an auto mechanic, I often encounter the issue of engine shaking during startup in BYD F3 models, which is mostly caused by ignition system failures. For example, worn-out spark plugs or loose ignition coils can lead to uneven engine ignition, causing severe shaking as soon as the car starts. Another common reason is the wear of engine mounts, which are responsible for securing the engine. If they crack and lose their damping effect, the shaking becomes particularly noticeable during startup and acceleration. Some car owners also report carbon buildup in the fuel injectors, leading to uneven fuel supply and unstable engine RPM. If ignored, prolonged shaking can potentially damage the engine block or even affect the transmission. It's advisable to pay attention to regular maintenance and replace spark plugs or engine mounts as needed, rather than waiting for major issues to arise before fixing them.
I've been driving a BYD F3 for over two years. Once when starting off, the car shook so badly it was wobbling. After checking myself, I found the clutch plate was excessively worn. This kind of manual transmission car shows particularly obvious uneven friction when starting, especially when driven aggressively. Additionally, a clogged fuel filter can cause similar symptoms, as restricted gasoline flow makes the engine work harder. Later, I cleaned the fuel injectors and replaced the filter, which solved the problem. This car tends to accumulate carbon deposits over time, especially after long trips, so regular maintenance is crucial. Checking the fuel filter and air filter every 5,000 kilometers can prevent many shaking issues. It's inexpensive and hassle-free - don't wait until the warning light comes on to address it.
When I first bought the BYD F3, the engine shook so much during startup that it made me nervous, and I thought it was a quality issue with the car. Later, the mechanic explained that this was mostly due to carbon buildup causing uneven fuel injection, and a dirty air filter also affected smooth air intake. Additionally, worn-out spark plugs can lead to inaccurate ignition, exacerbating engine vibrations at low RPMs. These issues are quite common in the F3, especially in humid weather. It's recommended for new owners to gently press the accelerator for smooth acceleration during startup. If the shaking persists, it's best to get the car checked for carbon buildup or replace parts promptly. Using high-quality gasoline can help mitigate the problem and save unnecessary expenses.
