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Pontoon boat gas tank

Old 05-10-2019, 11:52 PM
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Default Pontoon boat gas tank

Hi. My wife and I have recently started looking at pontoon boats to enjoy time on the water with the kids. We are looking at used to make sure it is somethings no we would enjoy before dumping a lot of money into it. Anyways, we found a used Lowe with low hours, but for some reason, the OEM fuel tank has been bypassed for a smaller tank sitting on the deck. The dealership does not know why it was bypassed. The boat is a 2006. What are some reasons people would bypass the main fuel tank? Is this something I should worry about? Other than that, the boat appears to be in sound condition.

Thanks.
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Old 05-11-2019, 03:04 AM
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My guess is it was kept on a small lake with no fuel available and the owner found it easier to just use a portable tank???
I would have the dealer selling the boat test the tank and if its good, hook the lines back up. If it leaks, which I doubt, it should be pretty cheap to replace it. I am guessing it is a plastic tank??
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Old 05-12-2019, 12:01 AM
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..
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Old 05-12-2019, 06:08 AM
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It may have pulled a nasty trick like mine did a week ago and dropped the pickup tube into the tank. Mine is easily accessible so I pulled the fitting but can't find the pickup tube anywhere in the tank. Either it's clear or someone stole it!!
I got some high quality fuel line and replaced mine but CLAMPED it this time like the sorry ass manufacturer should have done in the first place.
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Old 05-12-2019, 06:41 AM
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Well with a portable tank you'll always have fresh fuel and no problems with water or contamination. I'm suspect as to why someone doesn't want to use the fuel from the main tank
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Old 05-12-2019, 07:57 AM
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Originally Posted by bluevein View Post
My guess is it was kept on a small lake with no fuel available and the owner found it easier to just use a portable tank???
I would have the dealer selling the boat test the tank and if its good, hook the lines back up. If it leaks, which I doubt, it should be pretty cheap to replace it. I am guessing it is a plastic tank??
this would be my guess. Any dealer worth dealing with should be able to verify if the factory tank is good or not. If they are able or willing to figure that out, I would pass on any dealings with that dealer.
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Old 05-12-2019, 10:14 AM
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Is this tank built in to the point that you can't remove it? If not I would take it out, rinse it out well and inspect it. If it looks OK, put it back in and use it.If it is built in and you can still get the pick up and sending unit out you should be able to get most of the crud out through the hole. Just don't try using the shop vac, it might turn into a jet engine.. An old welder trick is to use ammonia and hot water to steam the tank out.
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Old 05-15-2019, 01:22 PM
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So it looks like the original gas tank takes on water and was going to be very expensive to fix, so it was just bypassed and used the one placed on the floor of the stern. Thanks everyone for the responses!
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Old 05-15-2019, 03:13 PM
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You can get an aluminum top feed gas tank on ebay for under $200, with a fuel level sender.
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Old 05-15-2019, 03:32 PM
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The original tank is just bolted on the deck in a stern compartment?? Should be easy to replace if so.
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Old 05-15-2019, 05:27 PM
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If you use your boat a lot, a built in tank is a good thing but if you are an occasional boater, being able to take that unused gas off the boat and burning it in your truck (portable tank) will save you lots of problems.
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