I just bought a used 2001 focus se comfort wagon. The car was running fine until a person test drove it before me and came back and said it hesitated a lot. We think he might have done something to make it run bad to try and buy it cheaper. The car only has 97k miles on it and it was an older couple that owned it. The previous owner was very meticulous about everything. He said he never had any problems at all until this other guy took the car for 15 minute for a test drive.
I'm female so don't know much about these things. There isn't any water or fuel on the spark plug, the wire doesn't have any cracks and looks clean. The check engine light came on when I turned on the defrosters. The car will sometimes idle rough when started and other times runs perfect. The biggest hesitation with some bucking happens as soon as I try to go past 40mph. That doesn't happen every time either.
Cannot hear any hissing noises from a vacumn leak. All wires going to the coil pack look good along with all connections for the EGR and PCV. Have had a few neighbors look at it along with the guy I bought it from but no one can see anything wrong. Auto zone scanned it and gave me the code of a misfire in cylinder 2. He said that was the only code that came up. It had a full tank of gas and the prev. owner had put a can of dry gas in before he sold it.
I don't have any tools to check compression or the coil pack so if anyone has any suggestions on what else we can check before I have to give my right arm to a garage to run a diagnostic check on it I would greatly appreciate it. This now makes 3 vehicles I have that all have something wrong with them. The guy did say he would buy the car back from me because he feels terrible, but I really like the car and am hoping it's an easy and cheap fix. I doubt I will be that lucky though. Help please!!