2005 Nissan Ultima 185,000 miles 3.5 L six-cylinder

Asked by Lemon100 Nov 21, 2016 at 11:38 AM

Question type: Maintenance & Repair

2005 Nissan Ultima 185,000 miles 3.5 L six-cylinder
Every time the car is started first time in the
morning, there is rattling sound that last in about
three seconds then disappear. When started later
in the day it's not recognizable .

F_O_R answered 7 years ago

It is probably the timing chain. You may want to replace it and the timing chain guides and tensioner but I had a Toyota that I drove for more than 300,000 and it rattled like yours did for at least 100,000 miles.

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F_O_R answered 7 years ago

The chain rattles because it is worn and when cold the engine has not yet built up full oil pressure. The oil pressure comes up and makes the timing chain tensioner work and then the rattle stops.

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