another mystery solved
A few weeks ago I noticed that my port fuel gauge read full and my stbd gauge read 3/8. I new that “unfortunately” it was not full, and hoped that it wasn’t at 3/8 already. So I started by checking the gauges as indicated in the manual. They worked. Next, I pulled one of the plugs off the top of the fuel tanks to see how deep the tanks were and exactly how much fuel (inches) I had in there. The tanks are 35” deep and I had over 22 inches of fuel left (that's over 60%, not 35%). Then I realized that the tanks are not rectangular shaped. I pulled the fuel senders and found the discrepancy. Whoever had the boat before me decided to change the senders (for whatever reason) and put in off the self senders for a tank that is only 20” deep (the float arm type). So when my gauges would read empty, I would actually have approx 15” of fuel left. I contacted the tank manufacturer and they sent me a schematic of the tank so that I could confirm the dimension of the tanks. I ordered new senders from WEMA. They are the straight ones that the float just slides up and down. They recommend you order 1” shorter than the depth of your tank. I had to put a slight curve in them so that they would clear the outboard side of the tanks. It took me all of an hour to change them out and now my gauges read as they should. Remember that if you do any work on fuel tanks/lines/filters, always isolate you shore power and disconnect your batteries, better safe than sorry. I wonder what my next mystery will be??.
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DUBBLE DIPPIN
1999 MAXUM 3000SCR
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irate:
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