Over time, the chain can become loose or worn, leading. Some common causes include worn valve lifters, debris in the exhaust, loose timing. For the 350, there was a recall because it could cause some engine damage
PANGOLIN Engine Timing Chain Kit with Water Pump Fit for 2006-2015
Almost sounds like a vibrating heat shield or something, and only lasts for a second or less.
If you’re hearing a metallic, rattling, or clattering sound from under the hood (especially on cold mornings), it’s probably your timing chain
Let’s look at the most common causes of timing chain. Anyone know what is this and should i be worried? A broken timing chain will often cause an unpleasant metallic rattle when accelerating or decelerating If this happens, consult your vehicle manual for instructions on replacing it.
Does anyone know why and where or how i can fix it? A rattling noise from the engine, especially at idle, can indicate loose timing chain components, worn lifters, or low oil pressure Start by checking the engine oil level and quality, as insufficient lubrication. If you hear a metallic rattle when you turn the ignition key, or when the engine is idling, this could be alarming