OT: Blackhawk Down, Part II

From : azwiley1

Q: i have an 04 ctd and there is a noticable rattle when loading the engine below 1000 rpm. this is normal and obviously should be avoided. i have 4.10 axles and a 6 speed so it is easy for me to do that. i can imagine that with a 5 speed and a taller axle the rattle would be harder to avoid at start. steve this is a long shot but i thought i would ask... i have a 99 ctd with 5-speed. when pulling away from a stop there is a momentary rattle coming from somewhere under the hood sounds like it is right behind or near the firewall on drivers side. the sound is not real loud but it is noticeable. it sounds as though the engine is torquing over and causing something to hit. it disappears quickly once the truck gets moving. i have yet to spot any marks where anything is rubbing/hitting the motor mounts seem to be ok and i cant get it to make the noise by loading the clutch while the vehicle is stationary. ive never had a clutch chatter on me before so i dont know if it could be a clutch/pressure plate wearing out but it doent make any noise up/down shifting and doesnt feel as though the clutch is engaging roughly nor does it sound quite like what i imagine it would. for some reason i cant seem to convince anyone to ride under the hood and listen for the noise when pulling away from a stop so my long-shot question is... is the rattle a common/known problem please no its a diesel its supposed to rattle answers thanks. .