Registered 2012 SLK55 AMG w/P30
Last week the dreaded check engine light came on. The rustbucket started chuffing. I have a AAA exclusionary mechanical warranty that has no deductible if I bring it to a AAA shop. So, away I went. The error code thrown was misfire. Plug was pulled, badly fouled. Technician sticks a borescope in, says the cylinder is full of oil. Possible causes valve train or piston rings. I was told this problem is above their paygrade, have the car transported to a Mercedes AMG specialist about 100 miles away. The flatbed comes, drives the car up onto it and I waved goodbye to the rustbucket. I figured I wouldn’t see the car again. This was on Friday a week ago. The Following Tuesday I get a phone call from the service manager. It seems the fouled plug was not fouled with oil. It was carbon fouling. Apparently seeing oil in a cylinder for an AMG is not unusual. The problem turned out to be a leaking injector. The extended warranty company was charged $2400, problem supposedly fixed. I went 100 miles to pick up my car and drive home. When I got off the highway after about a 90 mile ride, downshifting as is my want, the car belched out a gnourmus cloud of smoke from the tailpipe. Of course, by this time it was too late to contact the dealer, or so I thought. I called and left a message – amazingly enough the service manager called me right back. He had me check the oil, it looked to be slightly overfilled the best I could tell. He had his AMG specialist call me back the next morning, who advised me that it’s possible under hard deceleration and high vacuum, the slight overfilling could cause some smoke to come out the exhaust - nothing to worry about. Drive it and see if it happens again. So far so good. Any feedback from our AMG 172 experts? Now you know why I call it the rustbucket.