TwinTurbo.NET: Nissan 300ZX forum - Unplugging does nothing, you have to ground them:
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Subject Unplugging does nothing, you have to ground them:
     
Posted by ttsmokin on April 22, 2013 at 4:35 PM
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In Reply To Yes, ticking goes away at high rpms... posted by NewMexTT on April 22, 2013 at 02:03 PM
     
Message BDE has some great info on VTCs:

http://bde-performance.com/vtc.htm

"The noise is typical with high-mileage pulleys and/or aftermarket higher-pressure valve springs that cause the cams to over-rotate on every cylinder's intake valve-closing event."

"True VTC noise can be verified by activating the VTC solenoids using a ConZult or by grounding their green with black stripe wires while the engine is idling."

     
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