You may have reached time to replace spark plugs, and spark plug wires, distributor cap and rotor if equipped. It may also possibly need a fuel filter change if external. Those items would be a place to start, you may only need a basic tune-up.
〉 Answered on Sep 7th, 2008 by Amanda J. Pierce, MBA "AJ", Certified Mechanic, Project Coordinator; Primavera Scheduler at VIGOR Alaska Industrial Shipyard & BizzM3ch Solutions
Intermittent problems should be diagnosed by a certified technician. They are hard to find at times.
〉 Answered on Sep 7th, 2008 by Donna Burmeister, Service Manager at Classic Nissan