I have an 05 sentra 1.8 and over bumps small or big theres a really light metal on metal rattle in the front left. It almost sounds like its in the dash because its easy to hear but doesnt sound like any serious component in the engine compartment. I checked any accesible shrouds in the engine bay and banged on and around the dash and door but i couldnt re create the noise unless driving. Any tips.