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#2
4th December 2014, 05:55 PM
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The 4.0TDI is not exactly renowned for its reliability, the intake manifold flaps eventually break and are then ingested into the engine resulting in engine failure. The same thing could have happened to you, something could have got into the cylinder which caused the valve to stick in the open position, thus breaking when the cam was unable to press down on the valve.
http://forum.a8parts.co.uk/showthread.php?t=5029 If the flaps have failed then they are the best part of £1K to replace, you'll need to remove the intake manifold itself to check the flaps are still intact.
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Manny 2004 A4 1.8T Sport Cabriolet, 89K Miles Past 2004 D3 A8 3.7 Quattro, Xenon, Bose, Blinds, Solar Sunroof, TV, ACC, phone and almost every option. 168K miles rising slowly with retrofit AMI and DVB-T in place of Analogue 2003 Volvo S60 D5 SE Manual, 197K miles. 2001 D2 A8 3.7 QS, Bi-Xenon, Bose, Blinds, Electric Everything, retrofitted RNS-D, 191K Miles Last edited by mannyo; 4th December 2014 at 06:01 PM. 
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