TwinTurbo.NET: Nissan 300ZX forum - failed smog again... dumbfounded (what is this plug)
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Subject failed smog again... dumbfounded (what is this plug)
     
Posted by KA8 on January 16, 2016 at 3:16 PM
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Message So failed ca smog again. Fixed broken stud on turbo housing with new gasket(was leaking for awhile), New plugs, O2 sensor, boost leak tested, oem cats with universal cat so 4 cats, results are worse. Found this plug to be loose. What does this plug for? Selling my Z sounds tempting.

 photo 20160116_130442_zpssyelu4fc.jpg

     
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