Fuel Gauge issue

Joer5000

Recruit
Joined
May 6, 2026
Messages
1
just bought my first boat 2007 Larson LXi228. Yesterday I went to my local lake and started with a full tank 35 gallons spent 4 or so hours out and pulling the bout out of the water the tank took 12 gallons and gauge was still on full before filling it. Once in a while I would see the gauge twitch but stay at full. I have many years experience with hot rods so I thinking the sending unit need to be replaced. My question is how do I get to the tanks sending unit? Any instruction or pictures will help vs just pulling things apart and hoping I am doing it correctly. It looks like the filler hose goes under the boat but I don’t see an access in floor? Appreciate any help!!
 

Scott Danforth

Grumpy Vintage Moderator still playing with boats
Staff member
Joined
Jul 23, 2011
Messages
52,566
Check the ground and signal wires. 98% chance it's a bad connection, only 2% chance it's the sender
 
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