rwunar
New Member
I'm having a nagging problem with my fuel gauge, both analog and SmartCraft (they have always matched, so I know it's not the gauge itself). I have a 2007 240SD with 350 Mag. Last year, both indicators went dead. However the GPH and gallons used still worked, so I finished the summer always filling up after burning through 40-50 gallons (65 gallon tank). At the end of the season, I filled up just before pulling it out and the gauge went up to full. I attributed it to bad gas as I had been having concurrent performance issues, which have been since fixed (I hit 46 GPS MPH last weekend--better than new!), and the Sea Foam additive I used to store the boat.
So upon putting it in this year, I noticed I only had 76% in the tank. This dropped to 52% the next time I was out and 4% then 0% last weekend. I'm about half full based on usage.
Based on this, I'm guessing it's the float, as a bad ground would seem to be binary, on/off. Although maybe it's corrosion on a connection somewhere? I printed out the parts diagram from the online manual, and I'm going to try and play around with it a bit before bringing it into a mechanic since I'm in between jobs right now, but unfortunately I'm much better with spreadsheets than wrenches.
Any help to try things in order to avoid a service bill would be appreciated.
So upon putting it in this year, I noticed I only had 76% in the tank. This dropped to 52% the next time I was out and 4% then 0% last weekend. I'm about half full based on usage.
Based on this, I'm guessing it's the float, as a bad ground would seem to be binary, on/off. Although maybe it's corrosion on a connection somewhere? I printed out the parts diagram from the online manual, and I'm going to try and play around with it a bit before bringing it into a mechanic since I'm in between jobs right now, but unfortunately I'm much better with spreadsheets than wrenches.
Any help to try things in order to avoid a service bill would be appreciated.
