Subaru Forester engine knocking and piston connecting rod failure likely due to bearing issues on Subaru Forester

Some Subaru Forester owners report experiencing engine knocking and piston connecting rod failure, often linked to bearing issues. These owners note that rod knock is characterized by a distinct deep and loud noise, which occurs when wear increases the space between the rod bearings and connecting rods, causing them to collide. Various factors, such as insufficient oil, incorrect oil viscosity, and general wear and tear, can contribute to rod knock, making it essential for owners to understand these causes to prevent further engine damage. Additionally, improper bearing clearance can lead to connecting rod failures, which may present as rod knock or dashboard warnings about low oil pressure. To avoid these serious issues, owners should ensure proper lubrication by maintaining adequate oil levels and using the correct oil type, along with conducting regular maintenance checks. Ignoring the noise from rod knock can signal imminent engine failure, so it is crucial for owners to pay attention to unusual sounds and take prompt action to mitigate further damage.