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Catalina 34 > General Activities > Main Message Board > Topic: Fuel sender
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Author Topic: Fuel sender  (Read 333 times)
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Carl Crothers
Forum - Seaman Apprentice
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Boat Name / Hull Number: Blue Wind II #1373
Model Year: 1997
Home Port: Oriental, NC
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« on: November 20, 2011, 12:25:32 PM »
After reading all the info about fuel gauge issues, I tested the wiring and the sender as instructed and found the sender defective on my '97 MkII.
Took me about 90 minutes altogether to pull and replace (WM had it in stock). First mate very happy to again know how much fuel we have (my engine-hour calculations did not give her confidence). Thanks to all who take the time to post detailed information about everything to help us newbies figure things out. Know that we appreciate it. Be well.
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Carl
Blue Wind II #1373
Oriental, NC
Ron Hill
Forum - Master Chief Petty Officer of the Navy
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Boat Name / Hull Number: APACHE #788
Model Year: 1988
Home Port: Great Wicomaco River, Chesapeake Bay
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« Reply #1 on: November 20, 2011, 06:09:53 PM »
Carl : Just remember that the C34 has an asymmetrical shaped fuel tank.

This means that when the float in the sender is horizontal and the level of the tank is half way down in inches (and the gage reads 1/2) -- you actually only have about 1/3 of a tank of fuel left!  

The bottom of the tank is that much smaller than the top of the tank!!  A thought
« Last Edit: November 20, 2011, 07:50:52 PM by Ron Hill » Logged
Ron, Apache #788
Carl Crothers
Forum - Seaman Apprentice
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Boat Name / Hull Number: Blue Wind II #1373
Model Year: 1997
Home Port: Oriental, NC
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« Reply #2 on: November 20, 2011, 10:19:42 PM »
Ron, thanks. I didn't realize that. Thanks for letting me know.

Carl
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Carl
Blue Wind II #1373
Oriental, NC
sail4dale
Forum - Petty Officer 2nd Class
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Boat Name / Hull Number: True Luff #1582
Model Year: 2001
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« Reply #3 on: November 21, 2011, 01:39:57 AM »
If that is the case ... how come when my fuel gauge reads 1/3 full, when if refuel I only can put in  9-10 gallons?  I was riding on the "E" on time back, and when I refueled after "puckering" for the last hour of motoring, I could only put in 17 gallons?

I have gotten to the point of believing my engine hours over the gauge.
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Cat34 Mk II True Luff #1582  2001
San Pedro, CA (Port of Los Angeles)
Ron Hill
Forum - Master Chief Petty Officer of the Navy
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Karma: 37
Boat Name / Hull Number: APACHE #788
Model Year: 1988
Home Port: Great Wicomaco River, Chesapeake Bay
Posts: 4027



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« Reply #4 on: November 21, 2011, 06:07:09 PM »
Dale : You hit nail on head!!
 
The funny float switch gages can not be relied on!  The only way to get the most accurate fuel level is to use      engine hours X the gallons per hour. 

Simple to do.   Ron
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Ron, Apache #788
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