TwinTurbo.NET: Nissan 300ZX forum - Some questions>>>>>>>>>>>>>>>>>>>>>
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Subject Some questions>>>>>>>>>>>>>>>>>>>>>
     
Posted by ZUL8TR on February 02, 2010 at 4:36 PM
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In Reply To Just replaced oil pump/t-belt/tensioner now i have a knock posted by penguintits on February 01, 2010 at 01:15 AM
     
Message After oil pump install what is the warmed up oil pressure at idle and at 2000rpm?

How long after you started the car did the knock appear?

How long after start up did the oil pressure move off zero?

Was the oil pump a rebuile or new Nissan unit?

Unplugging one coil at a time and not noticing any sound change in the knock would rule out rod bearings but still may have worn crank main bearings.

Have you put a mechanical oil pressure gage on at the oil sender to verify the oil pressure? See link below

[ http://300zx-twinturbo.com/cgi-bin/manual.cgi?list=lc&dir=&config=&refresh=&direction=forward&scale=0&cycle=off&slide=5&design=default&total=15 ]

ZUL8TR in Orlando,FL

     
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