truck jumped time repaired that problem now gas is getting in oil on 1992 Nissan Pickup (D21)

after i replaced timing chain fired right up ran for a few minutes shut it down checked oil found the gas

Asked by for the 1992 Nissan Pickup (D21)
possible flooding issue,, is this truck fuel injected or carb.?
fuel injected
before the repair ,, did you crank the motor alot to see what the issue was?? if so that could cause the issue..