gilend
Registered User
Hello all, a couple months ago I bought a 1990 Ford F350, 7.3 idi. Dont know much history on the truck other then the tranny and engine were replaced about 50,000 miles ago according to the pervious owner(he gave me the receipts). It has dual tanks and when I was test driving it I flipped the fuel tank switch to see if one it worked, and two if there was any fuel in the rear tank. According to the gauge there was about an 1/8 tank left, ok fine. The other day I went to fill up both tanks, I mainly drive this on the weekend it will be my fifth wheel hauler, and I have only used the front tank so far, anyway I went to fill up the rear tank, and it would only tank maybe a dollar of fuel, WTH? Is it already full? Is my gauge stuck on 1/8 of a tank of fuel for my rear tank? The front tank gauge seems to work just fine. So how do I check how much fuel I have in there without dropping the tank? Why would the front fuel gauge work and not the rear? Sorry for the long post, thought I would give a little background, new to diesels, not much of a mechanic but slowly learning. Thanks alot for any help!