Water Separator in Basthid Watercraft

[watersportsguy]

Howdy,
I am posting here as well as elsewhere. I have basically a PWC with a hull. It is a Four Winns Fling. OMC 115 HP , 4 cyl, 2 stroke 2 carbs with a turbojet drive. I have been having fuel contamination issues since I bought it. Collecting fuel/oil mix from output of fuel pump shows water at bottom of glass jar. (electric fuel pump and VRO with oil tank).
So I purchased a Moeller Clear Site (10 micron) fuel/water separator. Installed it after the primer and before inline fuel filter.
(gas tank....diagphram primer.....SEPARATOR...filter...pump). Primed it and cranked with carb hose disconnected to check operation. A few ounces of fuel came out then nothing. As I turned over the engine I noticed fluid collecting in the bowl at the bottom of the separator. Drained it and let it settle in a jar. It looks/smells/tastes (kidding) like straight gas.
Pumping the primer ends up with gas getting dumped into the bottom of the separator. Nothing is coming out of the separator's output. Pulled it and screwed on a spare. Tried blowing air through the assembly. worked Didn't notice the pressure required. Is this filter too "restrictive" in this setup?? Need to get the moisture out.....how though? Newbie to marine mechanics.
Thx

 

[Anders67]

Re: Water Separator in Basthid Watercraft

Normally is 20-25 miron.

But.


If you have electric fuelpump just take a hose after pump and empty the tank in a gas-jar, using a funnel with fine net in it. Then you see if it?s
a lot of whater in the tank.

When you cleaned out the tank. Put some carb alco ore tank cleaner in gas. So you get out the last part of H2O.

 

[robert graham]

Re: Water Separator in Basthid Watercraft

There's not much restrictive about a new, clean, properly installed fuel/water separator....double check your fittings and installation(inlet/outlet).... Teflon Tape on those fittings is not so good....better for the white Teflon Pipe Compound.

 

[watersportsguy]

Re: Water Separator in Basthid Watercraft

Guys,
Thx for the suggestions.There is too much fuel (maybe 3 gals) to use the 5/16 carb hose and fuel pump to drain. (also the collected waste would be a fuel/oil mix). I don't know the physics behind the separator but I did check orifices for restrictions as well as correct installation. As i think i mentioned when cranking the fuel is dumping into the bowl. I fear that the electric pump (VRO oil mix within it) doesn't have enough (in auto terms) draw/manifold vacuum to pull the raw gas through the separator.
So......my plan going forward. Purchased stand alone tank, primer, oe sized hose. Will connect as source and attempt to run. If no go the last part is the pump. The engine has good compression, spark, and runs off carb/starting fluid.
I will take the fuel gauge sender out, siphon the old fuel and drop an aquasock in to take the crap out of hull tank.

With a few hundred views in different forums no one has answered the essential question.......will/why won't this Moeller separator work in this set up. The filter box recommends not using with electric pumps. Cuz????? (my thoughts above about vacuum??)
Thx

 

[watersportsguy]

Re: Water Separator in Basthid Watercraft

Well I realized that I never posted anything after I resolved the fuel issue(s) with this beast. I connected a stand alone 3 gallon tank essentially taking the in board tank out of the equation. The engine/boat finally ran "fine". I cleaned out the inboard tank. Fresh gas and marine Stabil. Unit would run then die. Sometimes 10, 15,60 minutes.fine..other times 2 minutes and ...pffftt....off. Bottom line was a piece of plastic (looked a lot like a shaving from the tank) in the anti siphon valve. No wonder i got a great deal on it.