by Tonny from Burlingame, CA 94010
On time, courteous, and helpful. A few days later, my car became sluggish and noisier than usual and my check engine light came on. I spent a few hours and bought tools to diagnose. I discovered that a hose had a come loose and was disconnected. I believe that the hose bolt was loosened when Grzegorzs was checking my air filter.