installed used 3.3 in 97 pathfinder on 1997 Nissan Pathfinder

Won't start. check wiring according to book everything okay but there is no fire to the spark plugs. Car was running good before eng swap but book says now to check PCM. Old eng had gotten hot, had 184000 so swapped a used eng from junkyard, numbers on block JN8AR02Y and YW3088P8 or maybe 9

check your igniter module if its hook up
check your grounds really good