Why the Cummins QSB6.7 is Prone to Dropped Valve Seats?
The Cummins QSB6.7 is widely regarded as a workhorse in the industrial, marine, and agricultural sectors. Known for its power density and efficiency, it is the engine of choice for many heavy-duty applications. However, even the most reliable engines have their Achilles’ heel. For many QSB6.7 owners, this is not only a maintenance project, but…
