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Well started out at 1/3 tank this year. Put 100.00 in when I floated her had about 3/4ths tank. Took her to metro and back then to the moot still seemed 1/2 tank. All of a sudden took her for a ride and 0 gas as I left marina so put another 100 in guage moved up to 1/2 tank after taking a ride. Went to moot and back back to 0. So no boatin last week end wednesday I put 100 in and after 60 I had a full tank and guage reading now 1/8-1/4 tank... Should I focus on the sender or the guage...


Any input greatly appreciated, and I only have a 77 gallon tank and a 454 on a 26 foot boat...
 

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A Guess: Check the ground lead at the tank.

In my experience (which is not vast
), intermittent is most likely wiring. Second guess, the sender. Third guess, the gage.

Good luck!
 

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well, even from new those gages are never accurate in a boat. i had a 1 yr old boat. we dillied around the lake then went to det fireworks. leaving the det river we had over half a tank, pulled into the clinton and the boat ran out... but was still showing just over 1/4.
thats where i marked the gage with a marker, and never let it get to there.
screw gas gages in boats... they are only good for an idea where your approx at (and in my case not not even close) get a fuel flow meter, then you'll always know.
but another thought... could it be the gage is ok and something with the boat is wrong (prop, tune, etc) and your burning more gas then normal?
 

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I'm a BIG fan of the FloScan. It works fantastic! Then you'll know what you're burning (be a little more economical to save some cash!!:)) and you'll know exactly how many gallons you've used.
 

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QUOTE(dingbat1 @ Jul 8 2009, 12:26 PM) <{POST_SNAPBACK}>I'm a BIG fan of the FloScan. It works fantastic! Then you'll know what you're burning (be a little more economical to save some cash!!:)) and you'll know exactly how many gallons you've used.
I agree 100%.. I have them and they are great.. When refuleing I always know exactly how much I need +/- a couple gallons depending on whether or not I ran my Genny between fillups.
 

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I can predict fuel within a few gallons via GPS trip mileage.

AP1: 0.5 gal per mile

AP2: 1 gal per mile
 

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QUOTE(Away Point @ Jul 9 2009, 07:49 AM) <{POST_SNAPBACK}>I can predict fuel within a few gallons via GPS trip mileage.

AP1: 0.5 gal per mile

AP2: 1 gal per mile
Yes I can too, but while thats a prediction my flow meter is a known figure and has always been 100% accurate. If my digital reading says I burned 100 gallons of gas I know I burned 100 gallons of gas as long as I didn't run my genny.. I might make 3 or 4 runs before I fill up my tanks so I don't rely on my GPS trip logs to predict how much gas I burned. At the beginning of the season I top off my tanks and reset the flow meter to 0 and after every fill up I reset it back to 0 that way I always know how much fuel I have on board.
 

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QUOTE(ColPepper @ Jul 13 2009, 07:15 AM) <{POST_SNAPBACK}>QUOTE(Away Point @ Jul 9 2009, 07:49 AM) <{POST_SNAPBACK}>I can predict fuel within a few gallons via GPS trip mileage.

AP1: 0.5 gal per mile

AP2: 1 gal per mile
Yes I can too, but while thats a prediction my flow meter is a known figure and has always been 100% accurate. If my digital reading says I burned 100 gallons of gas I know I burned 100 gallons of gas as long as I didn't run my genny.. I might make 3 or 4 runs before I fill up my tanks so I don't rely on my GPS trip logs to predict how much gas I burned. At the beginning of the season I top off my tanks and reset the flow meter to 0 and after every fill up I reset it back to 0 that way I always know how much fuel I have on board.


Of course you are right. I totally agree it would be nice to always have an accurate reading. I don't have your generator "problem."


I reset the trip mileage at each fill up, and the total mileage at the beginning of the season. That's how I know I'm nearing 900 miles this year. (Damn! have no idea how that happened!!!)

I wish someone would come up with a product that could utilize the existing components in computer controlled fuel injection systems. Probably wouldn't be as accurate as dedicated flow measuring equipment, but the reduced cost and ease of installation might prove a worthwhile tradeoff.
 
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