The spark plug and coil pack on the #2 cylinder literally popped off. Spark plug gap is gone, threads are ok but slight damage. The coil pack broke at the mounting hole. Tried to put a new coil pack and spark plug in but it doesn't seal it right if it even threads in. Any ideas of what's broken and how can I fix it? It's a 2004 heritage with a 4.6 182,000 miles