wazzywoo9

I have a cmax diesel with a really annoying rattle. It appears and then disappears and varies in loud ness i have tried everthing to stop the rattle sometimes if i press down on the top of the parcel shelf it goes quiet but not always If the rattle is too bad and i turn the engine off it will sometimes disappear when i restart and if its not there it will sometimes reappear. It is driving me round the bend. Can anyone help