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I don't know all the BMW gobbdygook but the 2T int hat car needs something changed on time..... some chain or something. Let me hit the interwebs......
Heeeeeeere it is.............
"It has been well documented in online forums, that thousands of early production N20 engines were manufactured with faulty internal plastic timing chain guides. Evidence indicates that defective polycarbonate compositions were utilized in the manufacturing process for the timing chain guide, and as a result over a very short period of time the rigid plastic guides would break down and deteriorate in the engine with little or no warning. Upon failure of these internal plastic components, the timing chain slackens (becomes loose) and "skips time" by jumping teeth on upper cam shaft sprocket, a phenomenon that causes catastrophic damage to the engine by changing the piston-to-valve synchronization and causing these parts to contact each other.
In 2017, a class action lawsuit[4] was filed by several owners against BMW seeking redress for the faulty units. Plaintiffs in the BMW engine defect class action seek to represent a nationwide Class of consumers affected by timing chain guide and secondary chain failure and wear as well as several subclasses for states such as New Jersey, Illinois, Florida, Utah, New York, Colorado, Texas, Alabama, Oklahoma, Massachusetts, California, Wisconsin, Oregon and North Carolina. In 2018 BMW attempted to dismiss the class action lawsuit.[5] In 2019 U.S. District Judge William H. Walls partially granted and partially denied BMW's motion to dismiss claims that it sold vehicles with a known engine defect. Walls also ruled that the automaker cannot escape the suit entirely.[5]"
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