I could help you with this, please provide the last 8 of the VIN.
The problem can be fairly simple or impossibly hard, but if what happened was engine ran fine, fuel filter was the only thing changed the system most likely has air in it. There should be a shrader vavle, looks like a bicycle tire valve stem on the fuel housing. This is used to bleed any air that got into the lines out. The primer should start to feel harder to pump as fuel makes it's way to the head. If not you either have a lot of air in the system, a bad primer or rubber check ball. I would start with that first and see what you get.
By the time someone replied- we already had it running. And the answer given - is kinda the same thing as I mentioned in the question- just more detailed info....
But can you tell me how to reset the oil change light?