My misfire problem has resurfaced down here in Mexico. The local shop got a "cylinder 1 misfire" code. So, if you only had 1 day to change some parts and hope you fixed it, what would you change? I have a Nissan dealer close by and might be able to get a cap and rotor if that is worth trying. Unfortunately, I don't have a lot of time right now to deal with this so I'm going to have them try something and if that doesn't work I'll just park it for a while until I have more time.

When you say vacuum leak, what would cause and/or fix something like that?