ok, when i start my car (92 dx hatch w/ jdm d15b vtec) i can hear a very clear ratteling sound from the bottom end. thought it was a rod knocking but its not a consistent knock and it goes away at about 1000rpm. if it was a rod it would get louder with rpm and be consistent tick, tick, tick, tick, right? it kinda sounds like theres chunks of metal ratteling in the pan, almost like a spray paint can, but more muffled. if i lay in front of the ar on the ground i can barely hear it, but if i lay on the ground behind the front tire, its really loud. i was thinkning baybe a water pump, but theres no water on the ground ever. what about a timing belt tensioner? anyone, anything, help im losing my damn mind!!!