Like NotAPreppie said,
in addition-those are gases of oil from your valves that were not burned in the engine. They are comming back to cylinders, for second time for burning, via your air system,i.e. throttle body. It is mainly during cold start to faster heat up engine and lower polution.
in addition-those are gases of oil from your valves that were not burned in the engine. They are comming back to cylinders, for second time for burning, via your air system,i.e. throttle body. It is mainly during cold start to faster heat up engine and lower polution.