My boat fuel guage is inaccurate. Its has about a 40-50% accuracy. I assume this becuase I run out of gas when it reads half full. When I go to re-fill it, it takes full tank capacity, which I believe is about 70 gallons. I learned this the hard way (I was wondering way it took so long to come off full . I believe the sending unit arm is bent, if it has one, or the float is sticking. Anyone experience this?? Where exactly is the tank sending unit on a 27 Fever?? I'm going to start there. Any help or suggestions is appreciated! thx. Jon

My experience will all of my Fountains is that it reads full, when sitting in the water, until it is actually near empty. When the needle starts to "swing" around while boating, you had better be thinking about getting fuel. I believe this is the same experience that 99.9% of everyone else with a Fountain has, or will admit to.

Also, when filling your boat with fuel, you need to listen to what you hear at the air vent. When you hear a gurgling sound you better slow down the gas pump or you and the boat will be wearing fuel! They are prone to blow fuel out the air vent and sometimes out the fuel fill, if filling too fast or getting close to full. More than once, my boat looked like a NASCAR car pulling away from the pits with fuel streaking out the air vent as I started down the road, just after "filling" the boat's fuel tank (s).

Not to sure, but my mate has a 27 fountain,and he has a 60gallon tank which was/is standard with the 27's i think... we've run out of gas once or twice with the needle reading 1/2 full..lol now we just stop for gas any time we see a gas station

Is there any way to fix this problem

I've been told it has to do with the shape of the fuel tank not being a rectangle but more of a squashed and stretched pyramid, but I can't verify that. I didn't really ever think about looking at the gas tank shape in detail during my trips to the factory. Also, I would think that the fuel tank not sitting parallel to the water (ie, the boat sits on an angle in the water) would contribute to the sender reading more fuel than volumetrically in the tank. If you put the sender in the fwd end of the tank, it would probably just the opposite .... ususally reading low.

I gave up on the in tank sender. For the cost of the repair again I elected to install Lowrance ep60r fuel senders to keep tabs on fuel usage. Waiting on motors to be completed, so I haven't seen these senders in use, but have read accurate to 1/10th a gallon over a 100 gallon run.

What about those sending units that livorsi and the others sell that are adjustable with screws? The ones without the float arms? I mean, even with a tank being a weird shape, i would still think there has to be a better way to measure the liquid in the tank. What good is a fuel gauge if the only reading you get is FULL or empty and nothing in between.

Check it when the boat is on the trailer

or at WOT..

that is the only time My fuel guage on my 27 is accurate

becuase that is when the boat is level..

And it is pretty accurate..

Just check it before you launch. I know you are not burning 60 Gals of fuel in one day .. or are you ??

1/2 tank is like 1/3 though

That's what I do too before I hook the boat to truck, and usually when I get back to the storage unit (check it on the trailer with the boat floor sitting as level as I can get it). It appears to be pretty accurate when I do that. While boating, once I see the needle start swinging a lot, I know I should be heading for fuel or the trailer.