Was communicating with a friend who used to have a 2nd gen. He said it had a primer plunger on the front fuel filter. Actually I don't think he had a chassis fuel filter, but I might be mistaken. He said he used to stick a half broom stick up there to pump fuel into the filter after a filter change. Does a primer plunger exist on 4th gen front fuel filters? I've just been cranking my engine to prime the front filter.