Originally Posted by atlantamike
I have never adjusted the valve clearance? I recently had my timing belt changed less than 10k ago. Other than that, just routine oil changes.
This isn't a product of simple mileage, it's a product of not taking care of your automobile properly. Do a search on routine maintenance. This topic is gone over VERY frequently, maybe e3nine should make a sticky out of a nice example thread

You need to start taking better care of your car if you want it to run nicely