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07-12-2019, 10:41 AM | #1 |
Member
Join Date: May 2018
Location: N.E. FLA
Posts: 57
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1941 Merc gas tank problem
i bought my 1941 Merc in Apr 19. there was already a "new" gas tank (even still shiny) installed. however, when I fill it up to the "brim", I can only go 124 miles before "running out of gas".... I carry 2 gals with me.. got that in, and then put an additional 7 gals in it before it was coming out of the filler pipe/tube. owner's manual says 16 gal tank. something is wrong when I can fill it up with just 9 gals. HELP ! stay safe thanks
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07-12-2019, 10:48 AM | #2 |
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Join Date: May 2010
Location: shirley ny
Posts: 992
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Re: 1941 Merc gas tank problem
remove the sending unit and see whats going on in there
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07-12-2019, 11:02 AM | #3 |
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Join Date: May 2010
Location: shirley ny
Posts: 992
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Re: 1941 Merc gas tank problem
its also possible that the gas line inside of tank is not long enough to reach near the bottom
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07-12-2019, 11:06 AM | #4 |
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Join Date: May 2010
Location: Coral Springs FL
Posts: 10,934
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Re: 1941 Merc gas tank problem
Disconnect the battery before you remove the fuel tank sending unit. Sounds like your pick up tube is not picking up as mentioned earlier.
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07-12-2019, 11:11 AM | #5 |
Member
Join Date: May 2018
Location: N.E. FLA
Posts: 57
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Re: 1941 Merc gas tank problem
okay. will definitely disconnect my battery (I am too old for EXCITEMENT any more). I was thinking that half of the pick up tube had fallen off.... at least on this gas tank there is a plug on the bottom.... just filled it up 2 days ago, so might syphon before removing that plug. stay safe. thanks
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07-12-2019, 09:25 PM | #6 |
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Join Date: Dec 2014
Location: Santa Maria, CA
Posts: 985
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Re: 1941 Merc gas tank problem
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Alan 1929 Special Coupe 1941 Pick-Up 1955 Victoria |
07-13-2019, 01:02 PM | #7 |
Senior Member
Join Date: Jul 2014
Location: Iowa
Posts: 1,634
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Re: 1941 Merc gas tank problem
If you are relying on the gas gauge to tell you how much fuel you have left, and you have a replacement tank sender, it is necessary to bend the float arm to calibrate the reading. If that doesn't fix it, the float is probably hitting a baffle in the tank, and the flange of the sender must be rotated. We always install a ground wire to one of the screws on the sender and connect it to a known good grounding point. If you are using a plastic tank, this is vital.
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