On the old farm truck "1988 chevy 1500 4x4 305 TBI 5spd" lost all power. Idle is sort of rough. I almost doesn't have enough power to pull out. You have to hold it on the floor to pull out. Will not hardly go up hill. First I thought cat might be stopped up. So I cut it off. No help. Thought maybe fuel or air filter. Both needed changed so I changed them. No help. It doesn't act like it is flooding out "no black smoke". The check engine light has not come on. So I don't think it will have any codes stored but I'll see if local auto parts has a scanner I can use. I don't think it the clutch slipping RPMs aren't raising. It just like it isn't taking fuel or getting it. As for starting it starts fine I don't even have to pump it or anything.So I'm thinking now maybe fuel pump. Any suggestions. I really hate to drop the tank if that is not it. Thanks.