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Boat fuel tank problem??

Posted on 9/15/17 at 11:02 am
Posted by LEASTBAY
Member since Aug 2007
14330 posts
Posted on 9/15/17 at 11:02 am
Key West CC with a suzuki outboard 2010

Last time I took it out it ran out of gas and had to get someone to bring me about 3 gallons to get back to the marina. When this happened the fuel gauge was reading almost half. I went to fill it up today expecting it to be empty but it turns out there was already 10 gallons in there when I ran out of gas. What the hell is going on here?
Posted by mohalk
Member since Feb 2009
371 posts
Posted on 9/15/17 at 11:13 am to
Every marine fuel sender will fail eventually. If you have an access panel in the deck, you should take a look at it.

Sounds like your weren't actually out of gas. Maybe you have a pickup tube issue.
Posted by mohalk
Member since Feb 2009
371 posts
Posted on 9/15/17 at 8:54 pm to
It sounds like you have a fuel hose leak somewhere between your bulb and the tank. With a full tank, you have some pressure head advantage to keep the motor running and then you're eventually drawing in too much air.

I'm not sure what the build quality on the Key West is, or your Suzuki installer, but sometimes boat mechanics use shitty automotive "stainless" hose clamps, or they only use one. 17-4 stainless or 304 is common and cheap, but it won't hold up in a boat. Could also be a defective hose.

If you track it down and repair the hose, use two 316 stainless marine clamps on each hose barb and align them in opposite directions.
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