I would say that the engine has either been overhauled or in storage (or both) as that's definitely inhibiting fluid. The long length of time taken to light is indicative of an unprimed engine so a manual wet crank, followed by a minimum of 30 secs. drying out crank should have been carried out prior to trying for a real start. This would have purged the inhibiting fluid and primed the engine thus ensuring a normal start.