Funky fuel gauge

[Redstar]

So, after doing a flying quarter mile yesterday (Yes, I know. :laugh: ) my fuel gauge had been all over the place. It will randomly go from near empty to a quarter tank and anywhere in between. Also, my economy has been sucking. I did a "once over" as best I could without a lift or jack, checking for fuel system leaks, and didn't find any blindingly obvious problems. What the hell did I do to my car?

 

[Dyoel182]

Sounds like the fuel level sender is going back or simply gunked up with something.