How do i adjust the timing on a 1990 maxima? - 1990 Nissan Maxima

Does it have a distributor? Most cars after around 1985 don't have timing adjustments. Computers do it by looking at the crankshaft or flywheel. Under the hood a sticker will tell you engine info such as liters, emmission system, and idle speed. And if it has adjustable timing will mention timing, such as 10 degrees BDC or whatever. Most of todays cars can't be adjusted, I would bet that is the case with a '90 japanese car.