Some BMW 428i Gran Coupe owners report experiencing recurring #2 cylinder misfires, which may be attributed to faulty ignition components, fuel delivery issues, or problems with the cylinder itself. These misfires can lead to further complications, including overheating and potential damage to the catalytic converter. Additionally, some owners face water pump issues, which are common in this model and can result in overheating warnings and engine performance problems. The cost for water pump replacement typically ranges from $943 to $1,175. After multiple dealer visits, owners often find it helpful to clearly communicate their concerns to ensure thorough diagnosis and resolution of these issues. Regular maintenance, including timely replacement of faulty components, is crucial to prevent future problems, and seeking a second opinion from a trusted mechanic may provide further insights and solutions. Promptly addressing these issues is essential to avoid additional damage and maintain optimal performance of the BMW 428i Gran Coupe.
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