I installed a FASS fuel system in my truck and in doing so I have eliminated the DFCM and water in fuel sensor. Although I have a much larger, and probably better, water separator, I wouldn't know if I had water in fuel until it hit injectors and then would be too late (assuming I don't drain water separator every day, which I don't). I would like to install some type of container between the FASS and fuel tank where I could install the stock WIF sensor. Any ideas?

 

Can you re install the stock dfcm with the filter in it back in its original location?

Can you drill and tap the correct threads to install the oem water sensor on the bottom of this new fuel bowl you have?

Is this new fuel bowl clear where you can see through it? I guess you just need to look at it every day.

 

Stock is still there (for backup) so that is a possibility. It would be before the FASS so I thing the restriction would be too much even without filter in it.

New water separator filter is actually a Cat filter. Just a long steel filter with drain on bottom so I don't think I could adapt WIF sensor to it.

I've been thinking of maybe fabricating a T with barbs on both ends for hose connections and a piece of pipe on the t part hanging down with the sensor in bottom. Would rely on gravity to collect the water as fuel flows by.

 

I don't know for sure but I would think that water separation in fuel flowing through a fuel line is going to need a barrier (filter) to help it get stopped and collected in a bowl or pipe that will use gravity to hold it down there.

Honestly, if you just drain your new separator every few weeks you probably don't have anything to worry about. I carry 86 gal of diesel and burn it up a couple times per week and haven't seen any water come out of the dfcm in several years now. With about 500 gallons of diesel running through my fuel system every month, to have no water in years is saying something. I fill up at my local independently owned station and then I use Loves truck stops everywhere else and have never had any bad fuel.

 

I agree, haven't ever seen water in fuel (yet). My main concern is a slug of water as compared to emulsified water. I check my water Sep when I change oil so, with its large capacity, I think I'm good there. A good slug of water could overwhelm the system and a make shift sensor may catch it before damage. It's a feel good sort of thing.