What causes the Jaguar XE engine to shake and report misfire in cylinder 3?
2 Answers
Common causes of misfire in cylinder 3 in automobiles: issues with spark plugs, such as clogging or damage; problems with cylinder wires; faulty ignition coils; injector issues, including clogging or low voltage causing DME internal injector data loss; problems with the air-fuel mixture; or issues with cylinder pressure. Causes of engine shaking: 1. Engine misfire: This mainly refers to one or more cylinders not functioning properly, typically manifested as: intermittent exhaust gas flow, noticeable shaking of the exhaust pipe, distinct engine vibration, sometimes accompanied by popping sounds. This is often related to ignition coil failure. 2. Aging or loosening of engine mounts: Engine mounts are rubber blocks between the engine and the frame, designed to reduce vibration and cushion the engine's operation, while also securing the engine. Once these mounts age or loosen, engine shaking becomes significantly worse. Replacing the mounts can greatly reduce this effect. 3. Carbon buildup: This includes carbon deposits in the cylinders, throttle body, spark plugs, and intake system. Excessive carbon deposits inside the engine can affect ignition energy, intake efficiency, and the air-fuel mixture ratio, leading to unstable power output and shaking during idling and acceleration. It is recommended to have the engine cleaned at a 4S shop. 4. Fuel system failure: Using incompatible fuel grades can reduce the car's power output and performance; or blockages in the fuel tank vent, fuel tank switch, fuel filter, or fuel lines between the tank and carburetor can restrict fuel supply, causing a lean mixture and engine shaking. It is advised to use the manufacturer-recommended fuel grade and perform regular maintenance.
When my Jaguar XE's engine started shaking and showed a misfire in cylinder three, it was a real headache. After checking, it was most likely due to a faulty ignition coil or aged spark plugs with enlarged gaps, causing irregular ignition in the cylinder and leading to the shaking. Dirty or clogged fuel injectors might also result in insufficient fuel supply, preventing proper combustion. A dirty air filter or a leaking vacuum tube can disrupt the air-fuel mixture ratio, also triggering misfires. I must remind you not to ignore these symptoms, as they can accelerate engine wear or even damage the catalytic converter. It's best to inspect these components during regular maintenance, such as replacing spark plugs and cleaning fuel injectors every two years. Last time I took it to the repair shop, they found it was an ignition coil issue—replacing it fixed the problem. But it's better not to delay repairs to avoid safety risks.
