If your Honda or Acura vehicle has a V6 Engine, such as the Honda Pilot, Odyssey, Accord, Ridgeline, Acura MDX, TL, TLX, RL, TSX (V6 model), or RDX ('13 thru'18) and you hear this type of noise when you start it; then you likely have a bad timing belt tensioner and should get us to tow the vehicle to the shop. When the engine makes this kind of noise, the timing belt is very loose and can jump time, which could cause serious internal engine damage - bent valves.