Engine noise at start up

2009 NISSAN PATHFINDER
23,000 MILES
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CRISDEDIMA
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Nissan Pathfinder 2009 (2.5L ). From the very beginning I noticed the loud noise from the engine during its warm up (about 1000 rpm) - like from the heavy truck. After some time when the engine becomes hot the noise significantly reduces (about 600 rpm).
May 29, 2012 at 6:52 PM
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FIXITMR
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the beginning of what? you bought it new?
May 29, 2012 at 7:00 PM
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FIXITMR
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beginning of starting/running? did this happen suddenly 1 day?
May 29, 2012 at 7:02 PM
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CRISDEDIMA
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Yes I bought it new and the engine noise appear from the beginning .The normal engine noise change during running sometime after hundred miles ,sometimes after few minutes
May 29, 2012 at 7:49 PM
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FIXITMR
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any service been done since new? when did noise start happening? describe noise what does it sound like?
May 30, 2012 at 11:27 PM