93-97
The 93's needs thei timing belt done before a certain milage, if it isnt done it may break on you as the engine and then will be beyond economical repair if the break occurs.
So find out when its been done and if no, add that to the price, as a must-have to the purchase price in your mind.
I believe the 94's and later, had the kevlar belts, which lasted much longer so if it ever had its belt done at a dealer, it would have gotten the updated belt.
Otherwise extremely reliable cars one of the least expensive luxury cars to own ( still more $$/mo than a Civic of course)
Also be sure to check out this forum Infiniti General , wheere m,ost of our J30 guys hang their hats:
http://nicoclub.com/zeroforum?id=26
Fred..
PS: I may move this thread there shortly, so if you dont see it here, it will be there.