NSW Anyone know what causes that ticking noise on a 2013 320i?

[rapidTiger8]

I've been looking at a used 2013 320i that's in really good shape cosmetically, but when I started the engine cold I heard this rhythmic ticking from the top end that got a bit quieter as it warmed up. The seller says it's just normal injector noise, but I've read online about timing chain issues and worn lifters on the N20 engines. I don't want to buy someone else's problem, so I'd really like to have someone who knows these cars inside out take a listen before I hand over any cash. I've been trying to find Expert BMW Technicians in Abu Dhabi who can do a proper pre-purchase inspection and tell me if that ticking is a red flag or just typical for this motor. Has anyone here dealt with the N20 timing chain guide problem? Is there a way to tell without pulling the valve cover? Really appreciate any advice from owners who've been through this, I'm excited about the car but nervous about getting stuck with a major repair. Thanks.

 

[bridgetgudgeon]

Cold start ticking that quiets down as the engine warms is the classic early warning sign of N20 timing chain guide wear. Injector noise is usually more of a consistent tapping that does not change much with temperature.

 

[camillathistlewood]

A seller dismissing it as normal injector noise without you asking for any documentation is a red flag worth taking seriously. The N20 timing chain issue is well documented enough that any informed seller should know what you are asking about.

 

[carolinewarburton]

You cannot reliably diagnose timing chain guide wear without proper listening equipment or pulling the valve cover. A specialist with experience on these N20 engines will know exactly what to listen for and where during a cold start test.

 

[ceciliarummings]

Pre-purchase inspection specifically checking for N20 timing chain symptoms is absolutely worth the cost before buying this car. A failed guide eventually leads to chain skip and serious engine damage if ignored.

 

[charlottetwaite]

Excitement about a clean looking 320i is understandable but that ticking noise needs a proper specialist opinion before any money changes hands. Walking away from a deal is far cheaper than discovering a timing chain failure a few months after buying.