Hello Have the following problem with my 6s… Meanwhile he no longer smokes every now and then but often.. According to the previous owner the VSD were exchanged… I changed the cooling water tank plus the hoses to the engine because he has always cooked or got false air. The Kge was changed or the membrane, the hose not yet … can it lie on the hose also that he smokes ? spark plugs were looked at and are not dirty or oily or other. e days exchanged by mechanic. What could it be, can it be the Vsd again? But then the spark plug would have to be covered or one way or another?