The Cummins 5.9-liter diesel engine has powered Ram trucks since 1989. It went through a few changes over its lifespan, but ...

Cummins’ venerable 5.9 ... at any time the injection pumps could fail. Failed lift pumps would inevitably starve the injection pump of fuel, causing it to die as well. This became a common ...

fuel filter housing, and exhaust back pressure sensor. Despite these issues, many owners report getting well over 300,000 miles out of their 7.3 Power Stroke engines. Cummins 5.9 engines can ...