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Crazy1323 · 09-10-2015, 10:45 AM

My Audi had a similar sound on cold starts. The 4.2 in my Audi used timing chains on the back of the engine instead of belts. Our X5's use chains as well. If the tensioners have not had time to pressurize, you could hear some noise from the chains.

09-10-2015, 10:45 AM	#14
Crazy1323 Private First Class 27 Rep 191 Posts Drives: X5M Join Date: Apr 2015 Location: Memphis iTrader: (0)	My Audi had a similar sound on cold starts. The 4.2 in my Audi used timing chains on the back of the engine instead of belts. Our X5's use chains as well. If the tensioners have not had time to pressurize, you could hear some noise from the chains.
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