hello i recently bought an 89 jimmy and i think i already need to replace the fuel pump. my dad drove it to church today and when he got out it just wouldnt start. it had been running fine all day. So he came home and got some gas to pour down the intake (TBI by the way) and it fired right up and ran until the gas was gone (about 5 secs). We did this mutiple times with the same results so we think its the fuel pump. What else may it be, i dont remember hearing the pump clicking so im not sure but i thought maybe some sedimants from the bottom of the tank could have clogged up the fuel filter because i went muddin a little bit for the first time today and hit some ruts pretty hard. i dont know, what do you guys think it is, oh yea, i put some sea foam in the tank and intake yesterday to clean up the motor a little so do you think its possible for the sea form to break up some sediments in the tank like i said to clog the filter (just a thought) also what kind of a project is replacing the fuel pump. its a in-tank filter right so im guessing ill need to drop the tank . how hard, any tips, and any advice would be great thanxs.