To enhance the performance of your diesel engine the first thing you want to look at is one of the most common mechanical failures on a Dodge Cummins engine, the injection pump. It is a well known issue that the injection pumps installed in all the Cummins diesel engines manufactured by Dodge between ‘98 and ‘02 have had their fare share of problems with the Bosch VP44 injection pump. Preventing problems before they occur is the best way to take care of your truck.