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piston slap - Cayenne S

duncangould

PCGB Member
Member
I thought I would share the news that my 2004 Cayenne S was recently diagnosed with bore scoring; I had a boroscope undertaken and there was scoring of cylinder 5. I had had the car for 4 years and over the last 2 months it developed the dreaded top end tappety sound. The car had done 73k miles, had had an aluminium cooling pipe conversion and I sold it recently for £4500 via ebay. I have been told a contributing factor to scoring is the ethanol in petrol which has been introduced recently as part of the biofuel programme. I gather other models are not immune with problems occuring in non GT, normally aspirated 996s, some 997s, boxsters as well as other makes inclusing VW. I gather the earlier Cayenne Turbos do not suffer from scoring due to the alloy used in theri cylinder liners. Some have mentioned that good quality petrols and long distance driving may help in delaying or avoiding this problem...
 

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