This application note briefly explains the theory behind measuring additive phase noise for IDT clock buffers and summarizes the additive phase jitter results for several widely used IDT clock buffers ...

Many modern passenger cars have either a timing belt or a timing chain. Generally speaking, timing belts have the advantage of being quieter and cheaper to produce and replace, while timing chains ...

If the noise is a metallic rattling noise, then you might be on the right track here. But as well as the timing chain, it could also be the tensioner that keeps that timing chain tight at fault. The ...