Hi folks, Our 2013 LR4 at about 100k miles is making a funny grinding/whining noise from the back of the engine on revving and acceleration (load does not seem to change it). You can hear it when you drive normally and accelerate at any speed. If you open the hood and pull off the plastic cover it is very evident. It's like its generally from the back end of the intake manifold. Any clue whats near there? Cam bearings? It is not coming from the timing chain and does not sound like that noise. Thanks, all!