1998 Nissan Sentra 4 cyl Front Wheel Drive Automatic 122600 miles
I just had a tuneup and oil change by my mechanic. He also tested compresion and said all's fine. 140 across. Valves good no need for adjustment. He also cleaned fuel injection system. Then I drive home and smoke starts coming out of tailpipe. I figured it was carbon. I return car next day after smoke continues and runs sluggish losing power. He says it could be a bad vacuum modulator. But, I'm worried about credibility as I've never had any smoke and he gave car clean bill of health within the 24 hours of the smoke beginning. What is up with this? The car is in his shop for the weekend but I'm concerned and anxious. What could this possibly be?
have the same problem?
Friday, February 15th, 2008 AT 9:19 PM