I wasn't real happy with my gas guage either. I did some work on my sending unit and it is much better, but the real fix for me was to install a fuel flow guage.. a digital 2 1/4" guage that tells you how much fuel you have left, and how much you have used. I think its much better than a tank guage because it accurately measures flow (usage). Only thing is you have to remember to reset it when you fill up or it doesn't know your tank is full again. But I have to reset the computer in my blazer when I fill it up so its pretty much the same. I use it in addition to the standard fuel guage. I just trust it more. too much motion in a boat. Gas rolls to the front of the tank and then floods all to the back every time you take off. This is why my particular tank sender tells me I have anywhere from 1/4 to full depending on my acceleration.
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