What makes a Cummins 5.9 diesel engine crack?
What makes a Cummins 5.9 diesel engine crack? The Cummins 5.9 diesel engine block with the number 53 cast on the side is a typical situation where the block cracks under be normal operating conditions. Some believed the problem to be found only in high horse power versions or those with standard transmissions or those... Where is the crack on a Cummins 53 Block? A crack develops on the right side of the engine, below the freeze plugs, right where the block bends back towards the inside of the block. It is a difficult area to see for auto transmission...