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Old 07-12-2019, 10:41 AM   #1
grouchyandugly
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Default 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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Old 07-12-2019, 10:48 AM   #2
oldskool
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Default Re: 1941 Merc gas tank problem

remove the sending unit and see whats going on in there
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Old 07-12-2019, 11:02 AM   #3
oldskool
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Default 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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Old 07-12-2019, 11:06 AM   #4
19Fordy
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Default 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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Old 07-12-2019, 11:11 AM   #5
grouchyandugly
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Default 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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Old 07-12-2019, 09:25 PM   #6
Anteek29
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Default Re: 1941 Merc gas tank problem

Please keep us informed!
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Alan
1929 Special Coupe
1941 Pick-Up
1955 Victoria
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Old 07-13-2019, 01:02 PM   #7
supereal
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Default 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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