water separator filter before bulb or after?

[ddakota]

I am installing a water separator filter in my boat (175 Fast Strike engine). Should the filter be before or after the pressure bulb? Seems like if it was before the bulb it would be hard to prime, but what do I know?

 

[Joe Reeves]

Re: water separator filter before bulb or after?

It doesn't matter, before or after.

 

[petryshyn]

Re: water separator filter before bulb or after?

one nice thing about putting it before the primer bulb is that when the filter becomes plugged, the bulb will indicate this by sucking flat. A kinda poor mans vacuum gauge.....

 

[ddakota]

Re: water separator filter before bulb or after?

Thanks for the advice. I thought it did not matter but I was concerned about pumping that bulb to get fuel into the filter and the lines again. I installed it before the bulb. Not sure if there is a problem, but it took me about 15 minutes of pumping the bulb to get it primed. I guess I had a lot of air to pump out of the system before it started pulling fuel. It stays full and runs good so I guess all is well.

 

[d.boat]

Re: water separator filter before bulb or after?

Thanks for the advice. I thought it did not matter but I was concerned about pumping that bulb to get fuel into the filter and the lines again. I installed it before the bulb. Not sure if there is a problem, but it took me about 15 minutes of pumping the bulb to get it primed. I guess I had a lot of air to pump out of the system before it started pulling fuel. It stays full and runs good so I guess all is well.

My filter is before the bulb. I've personally never had that sort of problem (priming), but the standard procedure is to fill the cannister with fuel before installing it. Now you'll know for next time!

 

[daselbee]

Re: water separator filter before bulb or after?

My filter is before the bulb. I've personally never had that sort of problem (priming), but the standard procedure is to fill the cannister with fuel before installing it. Now you'll know for next time!

Yes, you have to fill up the approx 1 PT of fuel in the empty filter when you have it off for servicing, etc. Remember to use pre-mix if that is the way you run your fuel.

 

[Barnacle_Bill]

Re: water separator filter before bulb or after?

When you change the filter re-prime by holding the bulb in a vertical position (arrow pointing up) and it will prime much faster.

 

[w2much]

Re: water separator filter before bulb or after?

Also check your anti syphon valve is operational. If it is not some fuel will flow back to the tank while you are trying to prime