misfire P0300

Good day all, I have 2010 Nissan Maxima that I just rebuild the engine on. I started it up for the fist time and it started right up, put the scan tool on it and it's showing random misfire. I did a power balance test on it and the front bank all check out. I did a relative compression test and cylinder 2 is a litter lower but all the front cylinder are showing 90 psi which is some what low. so I was watching a few videos on in-cylinder pressure transducer test and did one, please give me your feedback all feedback is greatly appreciated. sorry, to see the relative compression you will have to scroll down to page 8
. Also can the valve lifter cause a misfire? if the space is to big.

Looks like a valve timing issue to me

Definitely agree with Andy. I'm no expert at these waveforms, but it looks like the intake timing is very late. The transition between the end of the exhaust and beginning of the intake is very gradual, when it should generally be pretty sharp. The lack of a deep vacuum pull in the decompression stroke can also suggest a cylinder leak, but that might be a function of the timing issue.

I doubt a lifter could cause this? Unless all the lifters on a particular bank were still soft at this point. Can you have a look at fuel trims on your scanner? I'd be nice to see how the engine is breathing as a result of this.

I have overlayed a known good capture from a known good diferent engine type but fairly typical I would now tend towards thinking blocked cat.