One problem related to engine noise has been reported for the 2004 Nissan Xterra. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2004 Nissan Xterra based on all problems reported for the 2004 Xterra.
Ever since I had my 2004 x-terra I have told the service department about loud engine noise. Sounds like a lifter or valve on the right side of the engine. Each time they tell me its normal. I t has gotten louder and yet they say they all make the sound. . . . The engine is lake a washing machine its so bad and loud. . . .