The dude's service guide states 19 hours of labor.. That's what his service guide states that you have to pull some of the transmission away and some of the timing belts. We may go down that path later down the road but my main point for posting my issue is to see if we thought the ignition coils had to be replaced this early?First, I have never heard of an oil leak causing a misfire. Also, if you have a minor crack in your lower oil pan,that pan is steel. Perhaps you're thinking of the upper oil pan. Hyundai doesn't list that as a separate item but as part of the block assembly.
I got a replacement for mine for $150 off the web from a salvage yard. JB welding the crack in the upper pan should be no problem. Then, the lower pan can be reinstalled with new sealant and everything should be good, as there is only crankcase pressure on the aluminum upper pan. Replacing it does require pulling the engine or at least separating it from the transmission and removal of the timing cover before it can be removed.
I think the misfire on no 3 is a totally separate issue.