. well my bros truck wont start now. when he got the truck about 3 months ago it always started up rough but then once it warmed up it would run good after a minute of so. then about 5 days ago it wouldn't start but is turning over. i checked tje oil and it was low so i put some more in then it seemed to start not as rough but still wouldn't start. i took out a spark plug and hooked it up and it didn't spark. there for i think its electrical but dont know wehre to go from there. if you could help me that would be great useful info 1982 datsun 720, z22 motor, automatic, california car, 138k miles. if i missed anything thats important let me know im sure my brother would like a running datsun instead of a sitting datsun but yeah