Originally Posted by xt2005bonbon
I'd check for boost leaks first. If you continue having misfire in a specific cylinder, then I'd swap injectors and see if the misfire follows. If it's not the injector, then check coil pack and spark plug. If the problem persists, then time for leak down and compression test. Some people advise to do the latter first.
I would also check what the CEL code is before doing anything of course.
When I was having the random cyl 2 misfire, I had the compression/leak down test and everything was good.