Your 2002 Cummins 5.9, should be equipped with the problematic VP-44 fuel injection pump; 2003 was the change over year to the HPCR system ; and a lift pump, if the lift pump is failing ( poor pressure & fuel flow) the hard start after a filer change is a common sign of problems with the lift pump, as there isn't the fuel flow to help clear the air pockets out of the fuel system.
Time to check the lift pump pressure/fuel flow.
Is your fuel filter housing on the side of the engine or has Monaco relocated it?
The original Cummins location has a bleed screw to clear air from the system.
JMHO:
Question ? buxtonworks, are you posting from a cell phone ?
Punctuation, or capital letters would make your post more understandable.
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99DSDP 3884, Freightliner, XC, CAT 3126B, 300 HP /ALLISON 3060
2000 Caravan toad, Remco & Blue Ox.
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