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Acceptable water percentage in efree gas

Discussion in 'Chainsaws and Power Equipment' started by Yawner, Aug 14, 2023.

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  1. Yawner

    Yawner

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    Uh, ok, you got a point. Didn't think that one through, lol. This is driving me nuts.
     
    Yawner, Aug 16, 2023
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  2. FarmerJ

    FarmerJ

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    All the alcohol and octane booster like screwed up a fuel line, diaphragm or filter.

    nurse tank rules out the actual carb.

    so that points to the lines, pump or filter.

    since straight off the nurse tank works, add in the next component and run it.

    keep adding one component in until it doesn’t run right….

    there’s your issue.
     
    FarmerJ, Aug 16, 2023
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  3. metalcuttr

    metalcuttr

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    I have done this many times on small tanks. Remove the check fittings from the outboard motor fuel line, put the intake side of the line in the tank and squeeze away!
     
    metalcuttr, Aug 17, 2023
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  4. MasterMech

    MasterMech The Mechanical Moderator

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    5% in e-free will most certainly make it run like dog-doo.

    Does your fuel line enter the tank at the top or the bottom?

    Is your tester showing 5% water, or 5% ethanol?

    Ethanol in your fuel will actually help remove residual water in the tanks/carb. No worries on that little bit of 10% you ran. When we add HEET or DryGas to fuel to combat these issues, we're adding alcohol. The same mechanism that makes ethanol/alcohol bad if exposed to moisture and left to sit in the fuel system, makes it great for clearing moisture from the system. The trick is keep moving fresh fuel through the system.

    The problem could be that your fuel source doesn't move very much e-free and their storage tank is contamined. At least with regular E-10, the inventory turns over on a regular basis which is more than enough to deal with any residual moisture that accumulates.

    RE: the fuel pumps - is it dirty on the outside? They usually have a sintered brass vent on them and if that gets clogged up by fines and oil mist, then it can reduce the pump's capacity.
     
    MasterMech, Aug 28, 2023
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