What does a rattling timing chain sound like?

What does a rattling timing chain sound like?

Timing chain noise is commonly most noticeable during cold startup of the vehicle when oil pressure and oil flow is at its lowest. Excess slack in the timing chain can cause a rattling sound or even a clanking sound if the slack is severe enough to cause the chain to contact the timing chain cover.

Can a timing chain cause ticking noise?

It is less likely, but a ticking noise could also be caused by your engine’s timing chain. When the ticking noise is coming from your engine’s timing chain, low oil pressure is the root cause. Low oil pressure can be caused by low oil levels or by a bad oil pump.

How do I know if my BMW timing chain is bad?

Symptoms of a Failing Timing Chain

1. Rough idling: Start up your car and set out of it.
2. Unusual noises: Especially when idling, but not just when idling, you may hear your engine rattle.
3. Metal shavings in oil: The timing chain will wear out over time.

When should I replace my N47 timing chain?

Normally the timing chain kit can last to 80,000-100,000 miles without any problems. However, due to the design flaws cause the potential timing chain tensioner problem, we’ll highly recommend the car owners to replace the N47 engine timing chain set periodically.

When did BMW fix the N47 engine?

2014
BMW N47 is a four-cylinder common rail diesel engine that has many improvements over its predecessor, the M47. In 2014 it was replaced with the B47….BMW N47.

Is it normal to hear timing chain?

A lax timing chain, or worse, a broken timing chain with loose parts within the engine, will produce a rattling sound when your car is idling. This rattling sound is typically most prominent while the engine heats up and disappears after some time.