With out hearing what you are hearing it's hard to say. Bring it to him and express your concerne get them to write a service ticket on it and check it out before the warranty is up. If it fails shortly after, you may be covered since you complained about it while it was still in warranty.
At least you will have a record of it. It may go for a long time and never give you trouble.
Could be timing chain or something like that.
At least you will have a record of it. It may go for a long time and never give you trouble.
Could be timing chain or something like that.