I recently purchased a 1992 nissan 300zx se. we tried starting it up the starter is cranking and the fuel has alot of pressure. but when we checked the sparkplug it wasnt sparking so we are thinking it has something to do with the electrical plz i need a guide
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Re: cant locate the computer box for 300zx
I don't think I understand how you bypassed the key???? You didn't provide any of those details in your first help request. I don't think it will start when the security light is on. Unitl you are able to provide all the details I don't think I can be of much assistance.
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When ws the last time you had your vehicle professionally tuned up? You could be experiencing any one of infinite possible issues. Your problem sounds most like a fuel delivery/mixture issue, but could be anything, including poor wiring/connections. Have a pro look at it!
there isn't a fuse on the starter wire from the ignition. if you are not getting a connection it is more than likely a problem in your key cyclinder.
when you move the key into run (right before you attempt to crank) do you hear the fuel pump prime? usually this sounds like a gush of air and liquid.
Fuel delivery must be confirmed with a fuel pressure gauge on this vehicle. Disconnecting the fuel line and cranking the engine to see fuel shooting out does not confirm pressure, it only confirms fuel delivery. Remember you need both fuel delivery and pressure. On this vehicle if the psi is off by just one number that's enough to keep it from starting. Also replacing the coil and rotor (as you stated) does not confirm that spark is reaching the plugs. Confirm that both spark and adequate fuel pressure are reaching ALL the spark plugs.