TwinTurbo.NET: Nissan 300ZX forum - Help with vacuum leaks and engine hesitation
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Subject Help with vacuum leaks and engine hesitation
     
Posted by Fairladyaffair on May 17, 2008 at 3:26 PM
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Message I have a 1990 300zx TT it has a new motor in it just replaced the oem wiring harness and gave it a 60k maint. installed new O2 sensors and checked all the other sensors to make sure the were good. The motor only has 60k on it FYI. There is a hiss coming from inside the cockpit behind the gauge cluster and on the opposite side of the firewall in the engine bay as well. I checked every hose but they are all attached correctly and there are no leaks. Any idea??? Also there are two wire connectors on the driver side without a connection one is yellow the other is black. This is obviously my first time posting so please bear with me and appreciate the help.

     
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