TwinTurbo.NET: Nissan 300ZX forum - Yes that is correct
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Subject Yes that is correct
     
Posted by ttsmokin on September 27, 2014 at 9:22 PM
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In Reply To Ttsmokin posted by 1995z32tt on September 27, 2014 at 04:12 PM
     
Message The fuel pump is the only thing that pressurizes the fuel rail so with the correct relay being pulled, it should not have pressurized. Sorry I can't give you a good answer for why the gauge showed pressure. Might have been residual pressure from the last time you had the lines pressurized.

You definitely want to be testing the fuel pressure with the fuel pump relay in place. We need to build up pressure and watch the gauge to see if it leaks down over time.

The other alternative way is to pressurize the fuel rail with air and watch the gauge for leak down.

     
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