[bigarmzz]

if its been 7 years, personally, I would just replace it with a new one....a new one can be had for around $100 or so, cheap piece of mind....however, I guess my way of thinking also creates a bit of a domino effect, because you would probably, logically, want to put a new sending unit in there also, so theres another additional $40-$50, still cheaper that running bad gas through the carb and all