I'm almost positive I have a 30 gal tank, but when my gage shows E ands I fill and it holds 15 or so gallons. Through the whole gages sweep it is smooth. I know some in reserve is good, but the other half of 30 gallons? Could the pick-up be that far up to cause this? Thanks, Artie

 

Onemoparnut and I were just discussing this a couple of days ago. Yep, the float and/or sender unit really can be that far up. You've got a 30 gallon tank, (I'm pretty sure we all do, the gassers had a smaller one I think) and the light should come on when you've got 6 or so gallons left. Mine does, but I don't ever trust it and just reset my trip meter every time I fill up. I figure around 15 mpgs, (I usually get a shade under that around town), so 30 x 15 = 450 miles. I generally fill up around 420 or so. I should really fill up before then, so I don't get condensation build up in the tank.

 

The sender could be hung up maybe the sender mechanism slides up and down a few inches. I guess if it is stuck up it may cause the light to come on prematurely but it would also cause you to run out of fuel prematurely.

 

Try loosening the lock-nut and rotating the sender a little. Could be rubbing the tank side and getting stuck at half.