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Re: jetta with high emissions problem at the 25 mph speed
Posted to Technical Discussion Forum on 7/21/2013

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There must be a DTC.... No?

Is the engine oil gassy?

Any creepy stuff like "cold air kits" installed?..... drippy K&N?

Crankcase venting, diptstick tube, EVAP hoses look intact or at least unto... Login to read more.