Thread: Carbon build up
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      11-03-2011, 05:44 PM   #23
Tzu
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Canada
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Drives: 335i
Join Date: Jun 2010
Location: Toronto

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It was more time consuming than anything.

I've said on this forum before, the dealer cleaned my valves as well. Complain of sputtering and overall sluggishness compared to when you first got it. If they dont know what youre talking about, I'd go to a different dealer. Show them the intake valve picture thread. It's a known issue.
Appreciate 0