2006 Volkswagen Passat problem on cold startup

2006 VOLKSWAGEN PASSAT
61,000 MILES • 3.6L • 6 CYL • FWD • AUTOMATIC
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RALANO1963
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  • 1 POST
When i start my car in the morning i can see black smoke from the tailpipe,it .will last about a minute or so then clear. I have replaced the air filter and any other maintenance the car needs. Its not really a problem but i know its not rite. I am no stranger to fuel injection engines and it really makes me wonder whats causing the extra fuel? I did a lot of looking for a vacuum leak but cant find a problem. Engine runs fine even when clearing itself on a cold start, but i just cant except that to be normal. What do you think could cause a rich startup.
Sep 13, 2015 at 6:01 PM
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RIVERMIKERAT
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Possibly an O2 sensor. See if there is a shop in the area that works on Europeans and have them soft and hard codes.
Sep 13, 2015 at 7:56 PM
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RIVERMIKERAT
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Pull the codes.
Sep 13, 2015 at 7:57 PM
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