TwinTurbo.NET: Nissan 300ZX forum - What color is it?
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Subject What color is it?
     
Posted by Stadsport (PHX) on November 04, 2011 at 9:21 PM
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In Reply To Smoke above 15psi, turbos or motor as the root cause? posted by samsungZ (Houston) on November 04, 2011 at 08:39 AM
     
Message If it's dark gray to black it's fuel. Most Zs (with chip tunes at least) tend to smoke at higher boost because the tunes are intentionally rich for safety. This is only going to be more obvious when you rip out your cats and precats (as is the case with 700s).

If it IS oil, I'd probably lean towards turbos... a ring problem should show up in a leakdown test (though I could be wrong). Do you have the correct oil lines w/ restrictors installed?

     
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