Gas line filter?

iggyw1

Ensign
Joined
Oct 24, 2011
Messages
954
I have a 1990 Nissan 70 H.P. motor. I am planning on installing an in line gas filter to the gas line going from my under floor gas tank to the motor. The filter is made of clear glass with the filter on the inside. It is a throw away filter, in other words, it does not come apart to change the inside material, you just remove it and install a new one if needed.

The filter will be place in the gas line about 16" before the motor which is well above the primer ball. Is this a good idea or is this going to have any ill effects on my motor as long as I have the right sized fittings for the gas line and also as long as the filter is "clean" and not plugged up?? Thanks.
 

GA_Boater

Honorary Moderator Emeritus
Joined
May 24, 2011
Messages
49,038
My personal preference is a plastic body filter because it won't break if it gets banged. One of these, cheaper than glass, but still a throwaway;

filter.PNG
 

Baylinerchuck

Commander
Joined
Jul 29, 2016
Messages
2,726
Definitely agree with GA Boater, plastic. I put the filter for my 90 ahead of the squeeze bulb primer. My boat has a permanent tank and I didn't want the fuel filter outside of the bilge area. The squeeze bulb is in the splash pan.
 

iggyw1

Ensign
Joined
Oct 24, 2011
Messages
954
Thanks for the replies. I like the idea of the plastic rather than the glass filter, and I found out that my filters do come apart for cleaning and changing the inside material if I want to.

I was going to install my filter in line between the bulb and the motor. My primer bulb is in the bilge area and my hose is on the splash pan. Should work either way, before or after the primer bulb right? I'm also going to put one in line before my motor on my smaller kicker motor too (Evinrude 6 H.P.) I just wanted some assurance that it was not a mistake to install an in line filter to begin with.

Thanks to both of you!
 

km1125

Chief Petty Officer
Joined
Aug 10, 2016
Messages
515
Do both these motors also have filters under the cowling too?

Sounds like the filters you're talking about are going to be in the well, but if they were in the bilge I believe the rules state "no glass" for filters or sediment bowls. I also think plastic filters are not allowed. These rules may only legally apply to manufacturers or inspected vessels but they are there for good reasons. I'd have to research the actual language but someone else may have it more handy.
 

GA_Boater

Honorary Moderator Emeritus
Joined
May 24, 2011
Messages
49,038
Do both these motors also have filters under the cowling too?

Sounds like the filters you're talking about are going to be in the well, but if they were in the bilge I believe the rules state "no glass" for filters or sediment bowls. I also think plastic filters are not allowed. These rules may only legally apply to manufacturers or inspected vessels but they are there for good reasons. I'd have to research the actual language but someone else may have it more handy.

You're confusing guidelines for outboards and I/O's. The OP is OK using either for an outboard.
 

iggyw1

Ensign
Joined
Oct 24, 2011
Messages
954
Thanks again GA_Boater for clearing that up for me. I do want to be safe out there. I am replacing the plastic fittings that came with the filters with brass fittings just to be safer. The glass filters that I have are very thick glass, like on the old motors that had a glass sediment bowl under the carb. I know it could break, but not too likely to unless it takes a major blow with a hammer or something like that. And I did discover they do come apart for easy cleaning. I read the reviews on line before I purchased the filters, and they were all great reviews. Again, I was just unsure of if it was a good idea or not to add a filter if it was not manufactured with one already in place.

Now on my small "kicker" motor, there is a very fine screen filter before the pump. Should I NOT install a second filter on that motor or is it o.k. to have an extra filter?
 
Top