TwinTurbo.NET: Nissan 300ZX forum - From my experience
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Subject From my experience
     
Posted by Goldchocobo on July 20, 2015 at 5:01 PM
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In Reply To No I haven't been able to locate the area, i tried with a posted by Adamo on July 20, 2015 at 02:57 PM
     
Message It definitely doesn't sound like rod knock... although someone correct me if I'm wrong. It sounds almost lifter related, but don't stuck lifters usually free up after being heated up, as opposed to the opposite in your case?

It could be a small exhaust leak somewhere. Perhaps a flange somewhere, moving under the expansion of metals and causing a tiny leak. They can definitely sound like a tick, or "chop chop chop" sound. Are you getting any unusual exhaust smells from under the hood?

     
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