1998.5-2002 DODGE CUMMINS ISB VP-44 INJECTION PUMP IPVR-15X 0470506027

Diesel System Services specializes in the Cummins ISB engine used in the Dodge, RV and industrial applications. Issues with the ISB center around the VP-44 injection pump and fuel system. Loss of fuel supply is the normal cause of premature injection pump failure. Fuel supply problems are normally the result of a weak or failed lift pump which results in injection pump fuel starvation and overheating. The stock lift pump supply output starts to weaken typically around 45-55,000 miles and is completely out of specified supply specifications around 65-85,000 miles. The lift pump usually will give little or no indication of a failure until it’s too late. When a lift pump fails it is designed to go into by-pass, allowing the vain pump in the VP-44 to continue to pull fuel. Once the VP-44 is put in an inadequate supply situation internal injection pump damage begins. The indications of an internal damaged VP-44 will be loss of mileage, slight loss of power, hard starts, intermittent power l