Audi a4 b7 2.0t rough idle ,misfires.

   #1  

audi4ever

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Hi everyone, i am familiar with vagcom.i do most of my own mechanics,timing chains,timing belts,cylinder heads but some things baffle me.i currently own a 2006 audi a4 2.0t.my engine misfires and idles rough until i plug off my valve cover from the turbo breather pipe,then it runs perfect but only after i disconnect breather tube and block the valve cover,any ideas?
 
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audi4ever

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Im thinking boost leak test next,keeping all the complicity off to the side, what does everyone think ?
 
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PetrolDave

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Will be easier to make suggestions once you have posted a full unedited VCDS Auto-Scan...
 
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