Cam Gear Loose

My 6 month old 2006 Santa Fe has a loose cam gear.. It was an intermittent problem of sounding like I had a valve tap (that is what a number of people told me it sounded like).   I took it in 3 times and the dealer could not  found out what was the problem.   The other day I was driving it and the noise was so loud.   By the time I got to the dealer the noise stopped and I insisted they look at it.   They said the computer said there was a timing problem.   They then said it was a loose cam gear and that they are replacing it.   Could someone tell me if this means there is other damage to my engine?   Will I be encountering problems from now on?  Should I be trying to invoke the lemon law?   Thanks.

My 6 month old - 2006 santa fe has a loose cam gear.   I have been having intermittent problems with it sounding like a valve tap (that is what people told me the noise sounded like to them).   Each time I took it in to the dealer the noise had stopped and they said they could not find anything wrong with it.   Finally the other day it was so loud, I drove directly to the dealer... the noise stopped before I got there but I insisted they look at the car.   The computer said there were timing problems and later they told me the cam gear was loose and they were replacing it....(yikes 4 days in a rental car).   Can anyone tell me if this has caused other damage?  Will I be having problems from here on out?   Do I need to invoke a lemon law?  Thanks.