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Gas tank Leaking #12834540 07/19/18 10:41 PM
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chas1 Offline OP
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I have a 17 foot express bass boat, with a 10 gallon Portable plastic gas tank with the plastic screw on cap, if it’s more than half full, gas leaks around the threads , Not out of the vent on the cap, I know it’s common for those portable tanks to leak a little gas around the cap , But is this anything I need to worry about and replace the tank, not sure I can find another cap for this tank,
The gasket looks good inside the cap ,so I’m not sure why it’s leaking ,


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Re: Gas tank Leaking [Re: chas1] #12834669 07/20/18 12:24 AM
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NITRO Z8 Offline
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Do you loosen the cap to let the air out of the tank before you do any fishing? Also could be a lot of expansion from the heat also. Could get another 10 gallon tank and try that out and see if you get the same results?

Re: Gas tank Leaking [Re: chas1] #12834701 07/20/18 12:58 AM
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Pat Goff Offline
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Your tank must be vented. Or it does what it’s doing.


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Re: Gas tank Leaking [Re: chas1] #12834737 07/20/18 01:18 AM
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chas1 Offline OP
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Yes I have the vent screw loosened and is getting air and it’s not choking down.

Last edited by chas1; 07/20/18 01:19 AM.

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Re: Gas tank Leaking [Re: chas1] #12834816 07/20/18 02:15 AM
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Pat Goff Offline
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Ok I’d be looking for another tank. That one sounds compromised.


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Re: Gas tank Leaking [Re: chas1] #12835541 07/20/18 06:24 PM
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ssmith Offline
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replace the tank fuel tanks are cheap compared to fuel getting into the bilge an a spark from a battery or other electrical connections could lead to a disaster

Re: Gas tank Leaking [Re: chas1] #12836361 07/21/18 12:04 PM
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Bob Landry Offline
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I hope this question is relevant to this thread. If the fuel tank is vented, why does it release pressure when I open the fuel tank cap to fill up?


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Re: Gas tank Leaking [Re: Bob Landry] #12837669 07/22/18 06:47 PM
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gary purdy Offline
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Many EPA rules and regulations went into effect in 2009. Vents cannot be open-air vented like they always have been in the past. Portable tanks have even more restrictions. Some of the 2014 and up fuel tanks are pressurized and have a relief valve that will open if the pressure gets too high.


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