IMS Failure: The Truth is Out There

[DanNewton]

73K miles 2006 Cayman S. Travelling in a straight line on a dry road at around 65mph, the vehicle's engine expired in a huge plume of coolant/oil. Flatbedded to a Porsche dealership, a technician using a boroscope found (according to the dealership) "scoring to #5 cylinder and evidence that a valve had hit the top of the piston. There was also a huge amount of metal debris in the oil filter." This was a result of something failing in the engine, rather than the cause of the failure. The Porsche dealership did not care to determine the cause of the failure. I suspect intermediate main shaft (IMS) failure. One year beyond certified pre-owned (CPO) warranty and $20K for a new engine.

[recycledsixtie]

Originally Posted by DanNewton

73K miles 2006 Cayman S. Travelling in a straight line on a dry road at around 65mph, the vehicle's engine expired in a huge plume of coolant/oil. Flatbedded to a Porsche dealership, a technician using a boroscope found (according to the dealership) "scoring to #5 cylinder and evidence that a valve had hit the top of the piston. There was also a huge amount of metal debris in the oil filter." This was a result of something failing in the engine, rather than the cause of the failure. The Porsche dealership did not care to determine the cause of the failure. I suspect intermediate main shaft (IMS) failure. One year beyond certified pre-owned (CPO) warranty and $20K for a new engine.

Sorry to hear about your car Dan....