UPDATE: Hard starting Cummins ISM
Good Morning everyone! Cummins ISM. 95,000 miles. Just had it serviced, replaced water separator, filters etc. including Allison transmission service. Generally used Speedco for service but tried out ...
Forum Discussion
the most likely cause is the wrong engine mounted fuel filter. The cummins N14, M11 and ISM engine fuel filter must have a metal tube down the center of the filter or they will have long crank time. There are a lot of filters that will screw onto the cummins filter base but whatever they installed should cross to fleetgard number FS1000
