Trouble Changing Fuel/Water Separator Cartridge

[Chuck and Rita]

Just did oil and filter change on '08 Horizon with Freightliner chassis and Cummins ISL. Had just installed Fumoto (F104) valve a week ago using the shop vac at oil fill method discussed in other posts. Worked like a charm. Didn't lose a drop. Oil and filter change was equally clean and easy. Changing fuel filters was a different story. Secondary (pressure) filter was not a problem except that the original catridge was VERY tight. The primary (suction) filter (the fuel/water separator) was a different story. Once I loosened the original cartridge, fuel continued to flow from the filter housing until I was able to get the new cartridge in place and snugged up. Probably ended up dribbling out a gallon or more of precious fuel. Is there a way to change this cartridge without the hassle and the mess of looking upstream at diesel fuel the whole time?

[bdpreece]

Change the filter when the tank is low on fuel and try to have the front lower than the rear of the coach.

[Gary RVRoamer]

In some configurations the fuel will siphon out of the line when the filter is removed. Sounds like you have one of them. Brian's suggestion may help - give it a try.