Pitting/corrosion in cylinder bmwx32016

Asked by GuruBJMHH Jan 28, 2019 at 11:42 AM about the 2016 BMW X3 xDrive35i AWD

Question type: Maintenance & Repair

Bought cpo 2016 bmwx3 sport 35i
At 39,000 miles problems w engine  
dealer found putting in cylinder after
changing dme module and several
other changes. What would cause
and they did brand new engine .
Should I be concerned

2 Answers
42,950

Hornet_2497 answered 5 years ago

I don't think that (pitting) could be true, and I wouldn't worry if it was. What they saw was probably carbon. I would also think this engine has a warranty whether or not it's the original or a replacement . The cylinder walls can be viewed through the spark plug hole with inspection camera if it becomes necessary.

Mark helpful

F_O_R answered 5 years ago

If there is pitting in the cylinder walls the metal alloy may be faulty. Either that or you let the car sit for a few years and the cylinder walls rusted. I would hit up BMW for a new engine.

Mark helpful

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