Timing chain

[Soulfly83]

My mums owned her 1.0 2012 yaris since new. The engine has always sounded like a remote control car, put it down to being a 3 cylinder? I also suspect there maybe a timing chain noise from it, it's now at 112k miles, dealer service history until 100, I've done two services since for her.

Best way to inspect chain, anyone done one them selfs? Over 100k about right milage for chain replacement 

 

[flash22]

Dealer serviced means nothing tbh - yes its a diy job but it may take you a full weekend - the chain should last the life of the car, the little 1.0 does get worked hard for a living tho, the tensioners tend to fail that in turn slackens the chain and wears the guides