It had been running but replaced the plugs and wires now it cranks but won't start. Been trying everything I know how. Replacing a few relays and even the distributor and finished my tune up. Then someone told me today that some Nissan after replacing plugs and wires have to be reset by a dealer before it will restart. Is this true. I spent many years working for Datsun/Nissan started in 1972 retire from industry in 1988 after having a son. I'm now 65 and still work on my own cars. I never heard of this but times change. So I wanted to ask because I have been working on this vehicle for 3 months and no matter what I've tried can't get it to start. Please help !, my son needs his car back so I can get my back, LOL.