I can't get my nissan 1986 d21 pick up to crank over! It just would randomly do this at first...you go to try and start it up but no go.. then come back a hour later and it would fire right up, but now it won't crank at all.. been stuck at my work for a few days now. All the relays click and I've checked the ignition switch. still nothing. its fuel injected and a manual btw I can answer any computer questions any time if you help me out :] just give me some ideas what to look for?