Engine question for the penny pinchers.

what everybody has commented is true but i will point out something else. you say that when you get the throttle to the neutral position that is not speeding up or slowing down that you get a bottom end rattle. for those that experience this and think replacing bearing and a pump will fix this it wont. this noise is caused by excessive wrist pin clearance in your pistons. over all a worn out engine in your case it sounds like