Engine Mechanical problem
2002 Nissan Altima 4 cyl Two Wheel Drive Automatic 70,000 miles
I hear loud ticking/taping noise when the engine is cold (40F) and under load. That noise is gone after it's warm. I am using full synthetic oil 5w-30.
The engine runs very smooth at 50mph without any audible noise. But the light ticking noise can be heard at idle.
Is very light raspy noise at 1500-2000 rpm caused by bad flex exhaust pipe in front of the catalytic converter?
Thursday, December 25th, 2008 AT 1:09 AM