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-   -   Another fuel system setup question - fuel / water filter before or after mech pump? (https://www.offshoreonly.com/forums/general-q/326831-another-fuel-system-setup-question-fuel-water-filter-before-after-mech-pump.html)

14 apache 06-02-2015 11:01 PM


Originally Posted by MILD THUNDER (Post 4312485)
Yes, most had the spin on filter, plus a filter before the injector rail if I recall right.

Thought so but didn't want to be stupid.... LOL

MILD THUNDER 06-02-2015 11:04 PM

1 Attachment(s)

Originally Posted by 14 apache (Post 4312487)
Thought so but didn't want to be stupid.... LOL

Heres a 525EFI filter thats pre injector rail. Then it also has a typical style water separator deal too.

14 apache 06-02-2015 11:11 PM

Looks like same filter on my engines if you can post part number.

MILD THUNDER 06-02-2015 11:12 PM


Originally Posted by 14 apache (Post 4312493)
Looks like same filter on my engines if you can post part number.

Its on the box in the pic lol

14 apache 06-02-2015 11:14 PM

Couldn't read it till I clicked on it. to funny

MILD THUNDER 06-02-2015 11:16 PM


Originally Posted by 14 apache (Post 4312496)
Couldn't read it till I clicked on it. to funny

Hahaa, that is funny chit. I thought you maybe were like Mike Tkach and needed to put on your spectacles to see whats going on here. :D

Budman II 06-03-2015 06:16 AM


Originally Posted by Black Baja (Post 4312468)
Boat rolled over 95mph last trip out last year. He and 1 other ejected boat landed upright. No lanyard kept running. Somehow cam back to an idle wheel turn all the way one direction boat spinning in a circle. Late in the day middle of the Bay no boats on the water. One made it back in and shut it down. Yeah, some people can do it all wrong and get away with it. Some can't.

That sum***** needs to go out and buy a lottery ticket. Yep, some folks seem to live a charmed life like that, while others get zapped in the azz by lightning no matter how careful they are.

Budman II 06-03-2015 06:27 AM


Originally Posted by MILD THUNDER (Post 4312478)
Those rock filters are a good idea in all carbs imo. Was rebuilding a pair of demons for a buddy this week, and found this in his needle/seat.

Are we supposed to run a filter in front of an electric fuel pump as well? I was running an inline filter in front of mine, and I think this may have contributed to my problem.

Mild, I replied to one of your posts on another thread talking about filter heads for fuel/water separators. You posted a link to Fleet Filters for a filter head, along with a link to a fuel/water separator (PN 33405). I don't have room on my setup for a filter that long, so I'm trying to find a shorter filter that will work with that unit. Found PN 33244, similar specs. Will that one work? Can't remember if it was labeled as a fuel/water separator, but I think the water just settles to the bottom anyway. Let me know if that one will work.

ealesh33 06-03-2015 07:38 AM

I personally wouldn't run the fuel filter/water seperator before the pump. If you want a filter before the pump then run an additional filter that doesn't filter to as low of a micron level so it doesn't restrict flow as much, but I dont believe this is really necessary with the stock mechanical pump. Filter before the pump is going to restrict flow to the pump, filter after gives some slight pressure downstream of the filter. Better to have a little positive pressure at the pump then to restrict that flow to it.

Budman II 06-03-2015 08:30 AM


Originally Posted by ealesh33 (Post 4312579)
I personally wouldn't run the fuel filter/water seperator before the pump. If you want a filter before the pump then run an additional filter that doesn't filter to as low of a micron level so it doesn't restrict flow as much, but I dont believe this is really necessary with the stock mechanical pump. Filter before the pump is going to restrict flow to the pump, filter after gives some slight pressure downstream of the filter. Better to have a little positive pressure at the pump then to restrict that flow to it.

I agree that the mechanical pump probably doesn't need one, but I thought the electric ones were a lot more sensitive to crud going through them. That's basically what my question was about, in the unlikely scenario where I go back to electric.

Edit: Oops - Now I see that you were replying to my original question, not my more recent one. ;)


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