When i bought my teg, the guy told me that it had been sitting for about a year. I didn't drive it far. First thing I did was changed the fuel filter. Then i drained the tank (i know, this should've been done in the other order). It didn't even have gas in it, more like water. The tank has fresh gas now, but whenever I try to pull out, the motor sputters, knocks, backfires, etc. Is the new fuel filter already bad, or could it be the fuel pump. Also, on my test run after the fresh gas. I went up a hill, and i had to shift down to second just to make it upfrom where the motor was bogging down so much. thanks guys.