What cylinders are paired together in a inline 6 diesel?

In an inline 6 diesel engine, the cylinders are typically paired together in a specific firing order to ensure smooth operation and balanced power delivery. The common pairing is often cylinders 1 and 5, 2 and 6, and 3 and 4. This arrangement helps to minimize vibrations and maintain engine stability. The firing order can vary slightly among different manufacturers, but the goal remains the same: to optimize performance and efficiency.