What Causes Engine Shaking and Exhaust Pipe Abnormal Noise?
2 Answers
Engine shaking and exhaust pipe abnormal noise can be attributed to the following reasons: Engine Misfire: Engine misfire primarily refers to one or more cylinders in the engine not functioning properly. Common symptoms include: intermittent exhaust gas flow from the vehicle, severe shaking of the exhaust pipe, and clear audible sounds from the engine such as "popping" or "thumping" noises. This phenomenon is often closely related to ignition coil failure. Overly Rich Air-Fuel Mixture: When the engine's air-fuel mixture is too rich, the symptoms include: difficulty starting the engine; poor acceleration after starting, uneven engine operation; black smoke from the exhaust pipe accompanied by popping sounds from the engine, sometimes even backfiring; decreased engine power and increased fuel consumption. These issues are mostly related to carbon buildup, clogged filters, etc.
I've been driving for over a decade and have encountered many cases of engine shaking accompanied by crackling noises from the exhaust pipe. The main cause is likely an issue with the ignition system, such as worn spark plugs or faulty ignition coils, leading to a cylinder misfire that causes severe engine vibration. This, in turn, makes the exhaust pipe vibrate, and if the exhaust pipe mounting bolts are loose or the muffler has rusted through, it can produce strange noises. Additionally, a clogged air filter affecting air intake, carbon buildup in the fuel injectors, or worn-out engine mounts can also worsen the shaking. I recommend first doing a self-check: inspect if the spark plugs need replacing and listen to where the exhaust noise is coming from. If the problem isn't resolved, it could damage the car or increase fuel consumption. It's best to take it to a repair shop for a proper diagnosis with tools rather than continuing to drive with the issue.
