Ford Explorer Timing Chain Estimate

I Own A 2003 For Explorer 4wd With A 4.0l Sohc V6 Engine With Approximately 109k Miles. Not Too Long Ago, When The Car Was Started, There...

What Really Needs To Be Replaced On A 4.0l Ford Sohc When You Start To Hear Rattling Noise? Also I'm Being Told The Motor Has To Be...

A Mechanic Told Me I Need The Timing Chain Replaced On My Ford, Said It Would Be Expenisive And He Would Get Back To Me On The Price. How...