BMW 740i suspected EC module issue after head gasket replacement and wiring problems on BMW 740i

Some BMW 740i owners report experiencing issues after a head gasket replacement, including misfiring, which can lead to rough engine performance and may indicate misaligned components or unresolved problems. Additionally, external coolant leaks are commonly reported, which, while less severe, still require attention to avoid complications. Owners have also noted that improper torque on cylinder head bolts during the repair can result in uneven pressure on the gasket, leading to leakage and potential engine damage. Furthermore, some owners suspect issues with the Engine Control (EC) module and wiring, emphasizing the importance of checking connections and the wiring harness for damage. It is crucial for owners to address these concerns promptly to prevent further damage to the engine or electrical system, and consulting a qualified mechanic or BMW specialist is recommended for thorough inspection and resolution.