It turns over good sounds fine but not getting fire. Are there any fuse's or something that could possibly cause it.

Have you recently replaced any parts, such as the distributor, rotor, or anything similar? I recently had this same issue, and found that the problem was a loose rotor retention bolt.

Had similar problem... Fixed it by Repairing (aka Deleting/Re-Routing) the Emissions [E.R.G. Delete]! Would Turnover, but never fire. Replaced Battery/Jumped, Spark-Plugs, Starter ...but still no start. Randomly found instructions to remove/bypass parts of the Emissions; did it; and truck starts up no problem! Has been running so much better, and with no problems, for +2000miles!... I'm NOT a Mechanic or really an Auto guy at all (learned a lot via working on this Truck!); but I rank this as a EASY-MED Project--w/ No Special Tools! There are a lot of Articles & Videos online to Bypass parts of Nissan Emissions, so find one that matches the model you're working on. _________Know this is an old question, and u probably fixed or ditched the truck at this point; but figured I would add my experience to help anyone else having this problem... {OWN: 1986 Nissan D21 | Manual | 2wd}

I know this is taboo legally, but happened to a customer vehicle I worked on ('88) and the catalytic converters were clogged...knocked them out and it runs great (if you have emissions checks in your state, you need to replace them or make a delete((false signal)) for the o2 sensor.