Originally Posted by engnrsrule
I recently changed my diesel fuel filter on my Roadtrek Sprinter. Since then I have gotten the water in fuel filter warning light a few times. I have had the RV 2 years and never got this light before.
I follow the process to purge the water - Locate the purge hose on top of the filter assembly; Direct the hose into a container; Open the purge valve; Briefly turn on the ignition to turn the engine over. Close Purge Valve & restore purge hose.
After this process the light clears, but comes back a day or so later. Tank is 3/4 full and this has occured between trips. I do not want to be dealing with this on the road.
Has anyone experienced similar issues?
Sounds like you have water in your fuel tank and the filter is doing its job. Probably you got a bad batch of fuel somewhere.
I have no experience with this, but I gather from postings over at Sprinter-Source that this is not a Good Thing and can lead to very expensive repairs if ignored. I suggest you (a) go over there and do a search. IIRC, there is a Sticky thread on this topic; and/or (b) take a trip to your dealer or someone else qualified to drain and purge your fuel tank.
Again: my understanding is that this is not a trivial matter. The high-pressure fuel injection system is both fussy and expensive. That fancy filter system is there for a reason.