Toyota D4D Injector Rattles? If your D4D makes a very loud distinct injector Rattle, especially loud when cold, then you've got Two Options. Option One - spend the money and install a Brand New set of Toyota Revised injectors. As in the case of this engine in the video clip, you've probably gotten either side of 150,000km out of the Original set. We don't use or recommend remanufactured or rebuilt ones. Whilst cheaper and 'claiming' longer warranty, we say Brand New injectors will last you the d