TwinTurbo.NET: Nissan 300ZX forum - I'm betting it is not a boost leak
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Subject I'm betting it is not a boost leak
     
Posted by WC on August 30, 2008 at 12:31 AM
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In Reply To Newbie to 300zx TT's & this site... pls help me diagnose! posted by Snowmansdsm09 on August 29, 2008 at 03:27 AM
     
Message I recently changed a bad fuel injector and forgot to tighten one turbo pipe connector. The car ran fine. The leak was so large I could hear the boost escaping (sounded really cool).

I would clean the throttle bodies. The Tech section has a procedure. Park the car nose down on a hill to do this, to keep carb cleaner from flooding the intake. I used a toothbrush. Don't let go of the tube on the carb cleaner can, or it will shoot-off into the plenum (I did that once).

Check the TPS by unplugging it with the engine running and pluggin it back in. It is mounted on the diver's side throttle body. The idle should increase significantly when unplugged (2000 rpm). The plug was losing contact intermittently on mine. I cleaned all of the electrical connectors under the hood and packed them with dielectric grease after solving the TPS problem.

Ohm the fuel injectors too. I just had a third one fail.

$3k for a TT is a steal.

     
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