Single hose fuel connector for OMC – oring replace?

Home Forum Ask A Member Single hose fuel connector for OMC – oring replace?

This topic contains 19 replies, has 8 voices, and was last updated by Avatar amuller 1 month, 1 week ago.

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  • Avatar
    dougs-outboards

    Replies: 110
    Topics: 9
    #84068

    Amuller,

    Just throwing this in for info, as I just found out about it a couple of weeks ago. Had a customers 9.5 Ev in as it would not stay running. Did my usual look over, and found an old single ine fuel connector o ring, motor side. He had the old dreaded grey Sierra hose. A nice member and friend sent me a few OMC "O" rings, but were too big, mighta been Sierra, dunno, but he got them from an OMC dealer. Out of desperation I tried a McMaster Carr double line o ring and it worked perfectly. Installed easily, sealed on the motor and off the motor (no leaks), tried the hose on and off several times and he reports success.

    Dunno if these type of double line o rings will work with an OMC single line connector, but sure did with the Sierra type. You might try one if you have one.

    If you need a few, let me know, we’ll set ya up.

    Doug

    outboardrepair1 @ gmail .com

    Avatar
    amuller
    US Member - 2 Years
    Replies: 861
    Topics: 136
    #84114

    Thanks for the info. I would like some to try. Do you have the McMaster catalog info?

    These OMC tanks/lines have a lot of little bits that can act up.

    I’m thinking it might make sense to use a translucent vinyl line between the motor connector and the pump so as to be able to see bubbles from leaks on the suction side. What do you think?

    Alan

    Avatar
    dougs-outboards

    Replies: 110
    Topics: 9
    #84118

    Alan,

    Ok simply email me and I will send you some. I do not have the MC info. I ran across a post from Frank a couple of years ago, and he had the info posted, so I bit, glad I did too.

    outboardrepair1 @ gmail .com (scoot together).

    I would have PM’d you, but alas, since I am not an actual member I cannot PM Yous guys. They changed that about a year ago.

    The vinyl hose thing? Might be helpful to see what’s going on. A lot of times you can listen, or see leaks around the o ring area. Let us know how it goes if you try it ok?

    These o rings worked in the Sierra connector, didn’t try in the OMC connectors yet, so you can be the guinna pig for us and let us know if you would be so kind.

    Doug

    Avatar
    amuller
    US Member - 2 Years
    Replies: 861
    Topics: 136
    #84168

    I have a few connectors around, but it’s not obvious who made them. I’ll look more closely.

    Alan

    Avatar
    amuller
    US Member - 2 Years
    Replies: 861
    Topics: 136
    #178948

    I measured a few and the male part on the double line connectors is about 0.215″

    The diameter for the single line connectors is about 0.245.

    According to the NAPA/OMB chart posted above: 303598 has an ID of .225, 301824 has an ID of .197. but a -107 ring has an ID of 7/32 which corresponds to 0.219.

    A metric 3 x 5 is close but not identical.

    More than enough to confuse me.

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