I recently got the Autometer guage from motorsport. I filled up my tank and only 9 gallons went in. The fuel guage read full and after driving 100 miles, im reading near empty. I hope my gas milage isnt this bad. Any suggestion on whats going on? How many gallons does a 72 240z hold? ave gas milage? By the way i have a 280zx engine with a 511 cam and su carbs. Thanks
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