What are the reasons for ATSL acceleration shaking?
3 Answers
The reasons for ATSL acceleration shaking are as follows: 1. Engine misfire: This mainly refers to the situation where one or more cylinders in the engine are not working properly. It is usually manifested as: the exhaust gas flow from the car has obvious intermittency, and the exhaust pipe shakes violently, making the engine and body vibration clearly noticeable. 2. Engine mount aging or loosening: The so-called engine mount is the rubber block between the engine and the frame, which is used to reduce the vibration during engine operation and fix the engine in place. Once the engine mount ages or becomes loose, the body and engine will shake abnormally. Simply replacing the engine mount can solve the problem. 3. Carbon deposits: Carbon deposits include cylinder carbon deposits, throttle carbon deposits, spark plug carbon deposits, intake carbon deposits, etc. When there is too much carbon deposit inside the engine, it will affect a series of parameters and even cause unstable power output of the car, resulting in shaking during idling and acceleration. 4. Fuel system failure: Using an incompatible fuel grade (for example, using 92-grade fuel instead of 95-grade) can cause severe engine shaking, because the lower the fuel grade, the worse the anti-knock performance. Alternatively, if the fuel tank cap vent is blocked, or the fuel tank switch, fuel filter, or the fuel pipe between the fuel tank and the carburetor is partially blocked, it cannot meet the required fuel supply, leading to a lean mixture and engine shaking.
I have quite some experience with acceleration shuddering. When driving the ATS-L, I encountered a similar issue. The most common causes are aging spark plugs or damaged ignition coils. Spark plugs tend to accumulate carbon deposits and misfire after prolonged use, especially when accelerating aggressively, leading to noticeable shuddering. It could also be due to tire imbalance or worn drive shafts transmitting vibrations to the vehicle. A simple self-check involves removing the spark plugs to inspect for carbon buildup—replacing them is a low-cost fix. Fuel system issues, such as clogged fuel injectors, may also cause unstable fuel supply and result in shuddering. Don't ignore such problems as they affect driving safety and experience; it's best to get a comprehensive check at a professional shop.
I think the acceleration shaking of the ATS-L is mostly caused by ignition system issues, such as excessive spark plug gap making ignition difficult or aging coils causing unstable voltage output, leading to engine imbalance and severe shaking. Fuel supply problems like carbon buildup in the injectors or insufficient fuel pump pressure can also trigger similar issues. Suspension components like bent or worn half-shafts can also transmit vibrations. For DIY checks, you can use an ignition coil tester or simply observe if the engine idles smoothly. If unsure, it's best to consult a reliable technician to avoid minor issues turning into major repairs.
