TwinTurbo.NET: Nissan 300ZX forum - Diagnose my problem
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Subject Diagnose my problem
     
Posted by buckethead151 on March 08, 2011 at 9:50 PM
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Message Ok so I have been told that I have a bad rod bearing but I am kinda skeptical. The car is completely normal until the car is reved to 2.5k rpm's. It will then start to make a "knocking" sound. If the far right injector is unplugged, the sound is dampened but not completely gone. I drive the car 60 miles every day and it is still running. Is this a rod bearing or something in the head? Sometimes the car has a bearing sound but it sounds like a ball bearing going out. The oil pressure is low but not at 0. It stays at the dash below the 60psi marker. When the car is started the psi will rise to 90 psi easily but when the car is warm it will drop the other position. Does anybody have an idea of what this is? It is bugging the hell out of me.

     
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