I have a nissan pathfinder 1996 model 3.3L it has 180,000 miles to the original engine never had any problem till resently it has a rough idle it misses while push the gas pedal i have done a complete tune up the works. still does the same thing.when i have pulled the plugs out i have noticed 3 of the plugs was dark black like it was not firing the other 3 was normal. please help need the ride quick.
Aug 15, 2007 at 2:36 AM
