I noticed this morning that my engine kind of sounds like a diesel engine only when I first put my foot on the accelerator. After 1 or 2 seconds it goes away though and this is accelerating from a stop. Idling seems to be fine and it seemed to drive fine otherwise.
I am in need of an engine tune up (plugs etc.). Is this the probable culprit?
Also, it was about 15 degrees this morning (not sure if that makes a difference).
I'm driving an 03 WJ with the regular 4.7 v8 and have about 130,000.00 miles on it. Just put some new gas in yesterday and had an oil change about 500 miles ago.