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Old 03-27-2016, 10:39 AM
Barefoototis Barefoototis is offline
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Cool 89 Tristar fuel tank

I've been having trouble with my Tri-Star water keeps getting in the fuel tank .
It is a plastic tank under front seat in it seems to have worped allowing the water to collect on top of the tank and run into the fuel where sending unit and pick up clip to I have tried to seal it using silicone but it won't stick to the plastic tank I'm afraid I'm going to have to replace it any ideas on where to get one
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Old 03-27-2016, 11:28 AM
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paco_06 paco_06 is offline
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When you say silicone, are you meaning the rtv gasket maker? That's what I'd try, or some of the 3m marine adhesive. Get it very clean, maybe even use sand paper or a wire brush to remove a little material to get back down to fresh plastic. This may make it seal better. If that doesn't work maybe try JB weld, I'd try every option before dropping the cash on a tank!
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Old 03-28-2016, 12:47 AM
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wheelerd wheelerd is offline
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On my TriStar I would get water into the tank via the vent on the starboard side in front of the driver. Water would get in when doing a sharp RH turn. I turned it 90o so it was facing the stern. Could that be your problem?
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Old 03-28-2016, 10:38 AM
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etduc etduc is offline
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Quote:
Originally Posted by wheelerd View Post
On my TriStar I would get water into the tank via the vent on the starboard side in front of the driver. Water would get in when doing a sharp RH turn. I turned it 90o so it was facing the stern. Could that be your problem?
What he said.

If engine is running. Air is being sucked in, the vent. If bow dips, a little water is sucked in. Many people have water separators, on tristars, for that reason. You can also, relocate the vent, and plug the original. (Vent needs to be away from passenger area.

If you have proper gaskets, the tank itself is probably not the problem.
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Old 03-28-2016, 11:27 AM
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mikeg205 mikeg205 is offline
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you can redo the tank gaskets - from auto store and hi tack gasket sealant.
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Old 03-29-2016, 04:31 AM
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tommyb190 tommyb190 is offline
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Had the very same problem with my tristar.
I relocated the vent and that stopped it dead.
Bad design


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Old 03-29-2016, 11:17 AM
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etduc etduc is offline
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For others reading, if relocation is done. The vent-line MUST be above the tank fuel level, AND if tank is over filled...must be able to drain back into tank.

One draw back, is when fueling, fuel can come out the fill hole, before the vent hole.
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Last edited by etduc; 03-29-2016 at 11:36 AM.
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Old 07-22-2018, 09:54 AM
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slushpup slushpup is offline
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Where did you guys locate the vent to? I thought all the water in my Tristar was because of the ethanol. But now due to the vent location it all makes sense.
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Old 07-22-2018, 10:05 AM
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wheelerd wheelerd is offline
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Quote:
Originally Posted by slushpup View Post
Where did you guys locate the vent to? I thought all the water in my Tristar was because of the ethanol. But now due to the vent location it all makes sense.
I did two things:
- turned it so it faced the stern (there is a mounting nut on the backside of vent up under the helm)
- stuffed a small bit of shop towel into the vent, but still with enough room for it to actually vent
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  #10  
Old 07-23-2018, 05:39 PM
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slushpup slushpup is offline
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Mine sticks straight out but I have been around boats long enough to know about the style you speak of and will pick one up. It seems so Damn simple I honestly don't know why I Didn't think of that as the reason why there is always some water in my separator.
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