When did the Cummins 5.9 ISB engine come out?
When did the Cummins 5.9 ISB engine come out? Known sometimes as the " 5.9 Cummins ", The Cummins ISB was first introduced in late 1998. Originally the engine was equipped with a Bosch VP44 rotary injection pump, but was changed for 2003 to a high pressure common rail (HPCR) fuel system. Although a reliable engine, the VP44 injection pump was known to cause problems. When did the 24 valve Cummins engine come out? The Common Rail injection increased power and torque and noticeably reduced engine noise compared to the previous 24-valve Cummins engines. In 2001-2002 model year was a...