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hi there can any body help me .having problems with my 2003 tdi passat drives like a dream till i put my foot down then it hesitates as though its missing have try to eliminate various fuel and air leaks . goes well when cold but as soon as it warms up it starts missing .its great conserving fuel but very annoying when trying to overtake as you can imagine.
 

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First check for any error codes. This type of hesitation is normally an air leak. Have you done a full boost leak test like mentinoed in the FAQ? Even though you said you checked for air leaks this will rule out air leaks for sure vs. a quick visual inspection. At least on Passat in the US, there is an intercooler hose which rubs through and you can't see it.
 
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