2012 Hyundai Sonata 2.4 MPI engine rattle


Hi Scotty! Love the show. I drive a 2012 Hyundai Sonata 2.4 MPI (Korean made) with a 6 speed auto. It has about 48,000 kilometers on it. I hear an loud rattle whenever I accelerate hard or go up a hill at around 3000-3500 rpm. Could it be engine knock? It doesn't happen when I gradually press on the pedal and build the revs, only when I'm aggressive on the throttle. Thanks!

Comments (3)

Pre ignition, try better has see if it goes away. Premium one time. If it dosen't check knock sensor