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31 Posts
my brother just had same issue with hid WV 2.0 TSI. so he was speaking with technical support in WV.
they said its technical issue of all direct injected cars. it has nothing to do with catch can whatso ever.
before direct injection, gasoline was injected in mainfold, and gasoline is solvent for carbon. that's why the valves ware clean.
now that gasoline is injected directly they have no cleanin, and carbon is build up.
the newest generation of their's TSI have twin injectors. one small part is injected in mainfold for cleaning purpose and rest direct.
and those newest generation dont have those problems any more. all the rest does.
so we dont have that. that means, with different gasoline, different driving style oil catch can, they can bring 1% difference, but carbon will build up sooner or later.
but it doesnt have anything to do with catch can.
they said its technical issue of all direct injected cars. it has nothing to do with catch can whatso ever.
before direct injection, gasoline was injected in mainfold, and gasoline is solvent for carbon. that's why the valves ware clean.
now that gasoline is injected directly they have no cleanin, and carbon is build up.
the newest generation of their's TSI have twin injectors. one small part is injected in mainfold for cleaning purpose and rest direct.
and those newest generation dont have those problems any more. all the rest does.
so we dont have that. that means, with different gasoline, different driving style oil catch can, they can bring 1% difference, but carbon will build up sooner or later.
but it doesnt have anything to do with catch can.