bought a BMW X5 that was smoking from exhaust and was down for 2 years. Cleaned the muffler after changing the Turbocharger but smoke still persisted. The smoke is now whitish and oil is escaping

Asked by Jun 30, 2015 at 11:18 PM about the 2006 BMW X5 4.4i

Question type: Maintenance & Repair

The oil is still escaping presumably through the exhaust as oil levels are dropping sharply What could the problem be. Could it be the valve cover gasket is bad. And the valve seals have to be replaced?
Errol

4 Answers

222,735

So you thought you got a great deal and fix it? Oil through the exhaust with white is usually a failed headgasket. The previous owner might have overheated the engine. I suspect the heads might be warped too. Perform a compression and leakdown test on the cylinders. Not good in a BMW, big $$$$. Some owners replace the engine to save on labor costs.

415

Have crank case vent valve replaced.that does show the same symptom like head gasket issue.it separates coolant and oil and cracks after a while now mix the too.

415

Have crank case vent valve replaced.that does show the same symptom like head gasket issue.it separates coolant and oil and cracks after a while and mixes the too.

Why is my oil dip stick low after doing the required oil change of 8 qt. and have a whitish discharge from the exhaust and there are no leaks, so why am I losing so much oil to the point I can't read the dip stick & explain the smoke discharge?

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