why is white smoke coming from tailpipe

Asked by Dec 20, 2012 at 08:04 AM about the 2007 BMW X5 4.8i AWD

Question type: Maintenance & Repair

3 Answers

299,565

you might be burning coolant if it's bad enough.

3 people found this helpful.
65

Your car is choosing a new Pope.

3 people found this helpful.
5,165

Well hate to tell you but you have the N62 engine that is having problems with valve stem seals going bad causing oil consumption and white smoke from the tail pipe. But there are a couple of things that need to be checked before jumping to this. One is the crankcase vent valves on both valve covers if those diaphragms are torn then you could be burning oil from increased crankcase suction causing the white smoke. If those are fine then you will need to check compression and do a cylinder leak down test if those pass then its the valve stem seals. I have done a few of these jobs already it is very extensive.

12 people found this helpful.

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