I bought my 2006 rubicon with about 94,000 miles on it and currently have about 107,000. I use it as a daily driver. I’m slowly learning how to work on it but don’t have access to many tools or a garage. I figured out how to replace the o2 sensors fine amd saved some money. But thinking it needs a tune up. Engine sounds a little rough some days after driving to the airport every day for class (flight school) just wanting to make sure i do everything right by keeping it taken care of driving 50 miles 5 times a week. I was thinking maybe the spark plugs need replaced. Still need to change my other 2 o2 sensors but haven’t had a check engine light. Is this something i can do myself or am i better off taking it somewhere and asking for a tuneup? Also any suggestions in Austin tx where i can take it?