Posted by whalernut207 on 09/12/13 - 5:28 PM
#1
ok let me start by saying I am new to the site and so far like it very much!
I have a1984 25 outrage center console. I bought a new fuel gauge and I don't think the fuel gauge is reading correctly. it is one that is in the floor, it is a float type. when I fill the tank 140 gallon (argh) it reads past full. I assume the gauge is magnetic or something not sure how to adjust it? anyone have any ideas?
Posted by Finnegan on 09/12/13 - 5:48 PM
#2
That is normal. Mine reads the same way. These gauges often give misleading levels of fuel, but have excellent REPEATABLE accuracy. So what you have to do is learn what it is telling you, in gallons, IN THE WATER AT REST, at every reading mark. With an empty tank, fill it up completely IN THE WATER, and record the gallons taken at each gauge mark as the fuel goes in and gauge comes up. Keep that chart with you. Eventually, you will learn what each increment is telling you about fuel remaining.
Every boat is different. In my 25 Outrage, at 1/4 reading, I have only 20 gallons left, out of 140. As it hits 'E', I am dead in the water. In my Outrage 18, as I hit "E". I still have 15 gallons left. Go figure. So by using the method above, I "calibrate" each tank to know exactly what I have left.
Generally, you will have to use 5 to 15 gallons before the guage will even move off of "F". They do show more than "F" sometimes when completely full.
Posted by whalernut207 on 09/13/13 - 7:12 PM
#3
thanks for the info I will try this and keep it in mind. I have twin Johnson 2 stroke 150s and seem to run at a gallon a mile or close to it. I have a 28 gallon fuel dolly and put that in almost every trip. the fishing grounds I frequent Is about a 15 mile trip one way. I guess a good rule of thumb is not to go less than half a tank to start the day to be really safe.