

Coolant In The Engine Oil And Vice VersaĬoolant and oil should never mix. The other possibility is that your timing chain/belt broke, which is in charge of ensuring the synchronization of your pistons. This is often referred to as Piston Slap, and if you ignore it for too long, it will only get worse, therefore causing more damage. If accelerating causes your engine to make a clattering sound, it’s likely that the pistons are moving around too much inside the cylinders. Some possibilities include broken parts, worn bearings, and a broken timing chain. Most of which suggest catastrophic failure.

There are several reasons your car might make a rattling or knocking sound while idling. If you can’t hear your radio over the sounds of rattling and knocking, then there’s a good chance something is seriously wrong with your engine. Signs That You Need Your Engine Rebuilt Rattling Or Knocking Sounds While Idling
