Nissan X-Trail Multi-Cylinder Misfire Phenomenon

[VanGabriel]

Misfiring in cylinders is fundamentally caused by poor combustion. Common faults include excessive carbon deposits in the fuel injectors, intake tracts, combustion chambers, and the three-way catalytic converter, which require thorough cleaning. There are numerous reasons leading to engine misfires, broadly categorized into two main aspects: electronic control system failures and mechanical component failures. Electronic control system failures may involve missing or inaccurate sensor signals, faulty control units resulting in erroneous or absent control signals, damaged spark plugs or ignition coils causing failure to ignite, non-functioning fuel injectors, and connection faults in wiring circuits. Mechanical failures primarily stem from insufficient cylinder pressure, such as improperly sealing valves, air leaks, excessive gaps between the cylinder, piston, and piston rings, leading to inadequate compression, among others.