Nissan Pathfinder cylinder 3 misfire issue on Nissan Pathfinder

Some Nissan Pathfinder owners report experiencing cylinder 3 misfire issues, often indicated by trouble codes such as P0300 and P0303. These misfires may be linked to faulty ignition components, with some owners finding that swapping the ignition coil between cylinders 1 and 3 helps identify the problem’s source. Additionally, worn or damaged spark plugs are commonly noted as culprits for misfires. Poor compression in cylinder 3 is another potential cause that should be checked. Owners also mention that using low-quality fuel can contribute to misfire problems, emphasizing the importance of ensuring good fuel quality. In cases where there is good spark but no fuel reaching cylinder 3, a faulty fuel injector may be suspected. Furthermore, some owners are aware that damage to the catalytic converter can result from unburned fuel due to a misfiring cylinder, highlighting the need for thorough diagnostics and timely resolution of these issues.