Icantdo55

Thanks for the add. I'm working on a 180k 2002 3.5 pathfinder. Was bought from an auction so I have no history on truck. It starter turns it over at good speed but it labors to start, hot or cold. When running at idle if you punch gas in park it hesitates and small backfires through intake before it revs up. It lacks power. And once at operating temperature it turned over fine but would not start at all till it sat for 30 minutes. No codes. No Schrader valve so can't check fuel pressure. Timing jump? Any common issues I should start looking at?