TwinTurbo.NET: Nissan 300ZX forum - Large vacuum leak would be my guess like Metacom
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Subject Large vacuum leak would be my guess like Metacom
     
Posted by doug8867 on April 08, 2016 at 6:38 AM
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In Reply To Re: Did you check the two connectors next to the fuse box? posted by tinner on April 06, 2016 at 03:45 PM
     
Message If the plenum gasket gets misaligned or torn during reassembly, or if the plenum is possibly not tightened down firmly this will occur. Had this happen to me once after pull. Had to tear it all down and put a new gasket in then she fired right up.

You say it runs for a few seconds then shuts off. See if you are able to keep it running longer if you give it a little gas when you try to start it. If so, then that would point to a large vacuum leak - too much air in which is why giving it more gas helps make the mixture good enough to combust for a short period of time. Good luck.

     
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