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01-19-2015, 04:17 PM | #1 |
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Join Date: Jun 2014
Location: Houston, Texas
Posts: 722
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fuel gauge reading - normal?
Question regarding my fuel gauge. 1972 C20 350, Automatic.
I have a brand new fuel gauge, sending unit, float and wire from the fuse panel to tank. I replaced all these items months ago because my old gauge was staying where it was previously after each refuel and would only show full after driving a little or even until the next morning. It turned out to be the gauge that actually needed replacing, but through trying one thing at a time I started by replacing the sending unit and float, then the wire, then finally the gauge and that's when it started working properly. Anyways, everything works almost perfect now and I really have no issues but the gauge does seem to be a little inaccurate at times and I was wondering if it's normal for our trucks. The gauge works perfect the whole tank except for when it shows dead empty on E. I always still have about another 6 gallons left in the tank when I refuel. Is this normal for these trucks ?
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1972 Chevrolet C20 Cheyenne Custom Camper LWB - 350 / 330 HP GM Crate - TH350 / Mild Shift Kit - Dark Blue / Medium Blue - Paint Code 559 |
01-19-2015, 05:53 PM | #2 |
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Join Date: Dec 2012
Location: Chandler AZ
Posts: 1,149
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Re: fuel gauge reading - normal?
Mine shows full for about 75 miles of driving then drops at a faster rate than one would expect.
I think I have about 3 gallons left (I can put in 15) when on empty without running out of fuel.
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1970 Longhorn, Front Disc, 350/4 bolt, 882 heads, HEI, Edelbrock, 700R4, HO-52/4.11. 1996 Corvette, Collector Roadster, LT4, 396, 450RWHP, 6sp, 4.11/Dana44/posi 5 point roll bar And let us not grow weary of doing good, for in due season we will reap, if we do not give up. Gal 6:9 |
01-19-2015, 06:03 PM | #3 |
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Join Date: Jun 2014
Location: Houston, Texas
Posts: 722
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Re: fuel gauge reading - normal?
yeah I've noticed the same....seems like it stays on full for quite a while then starts dropping faster...
I think my tank is 20 or 21 gallons according to online info.
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1972 Chevrolet C20 Cheyenne Custom Camper LWB - 350 / 330 HP GM Crate - TH350 / Mild Shift Kit - Dark Blue / Medium Blue - Paint Code 559 |
01-19-2015, 06:12 PM | #4 |
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Join Date: Apr 2000
Location: Bonne Terre, Mo
Posts: 3,005
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Re: fuel gauge reading - normal?
I would try to fine tune bend the float arm so it shows empty at about 2 gallons. Pull the seat/ sending unit make your adjustments..When mine says "E" it has a good handful of gas. Mine's just the opposite of yours.
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'69 Chevy Long Fleet & '71 GMC Short Step & Project "ODD BALL" "You can wash a pig, soak it in most expensive perfume. In the end it is still just a pig." ODD BALL build thread http://67-72chevytrucks.com/vboard/s...d.php?t=478629" |
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