audi 1.9 tdi avb engine code 2003

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Wed 16 Aug 2006 21:59
audi 1.9 tdi avb engine code 2003 - tonyglover9
when in gear under load a air popping noise is heard. the valve showing through the top engine cover has a vacuume pipe, when disconnected the noise stops. any clues anybody
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Wed 16 Aug 2006 23:35
air popping noise audi tdi avb engine - tonyglover9
when egr valve vac pipe disconnected, no noise.
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