All,

At 15000 miles I took it in becasue I was hearing a diesel sound at startup. They said it was carbon buildup, and ccleaned it out. It sounded better, but not fixed.

At 30000 miles I took it in for the same issue. they said it was the same issue, but did not clean it - not covered under warrenty. They said add gas treatment to remove buildup.

At 35000 miles, I have error code P04340. Catalist system malfuction??? WHat the??? Someone with a code reader said it might be oil by the valves or rings??? I don't believe everything I hear, but it makes sence if there's buildup.

What is P0430 trying to tell me?