RE: '98 A6 2.8 won't start- mechanics are at a loss...

["Milan B. Milojevic" <milanb@earthlink.net>]

Currently I have a 96 A6 whose engine is being replaced, under warranty, 
due to excessive carbon build up and crank shaft being out of specs.  All 
this is occurring at 49+K miles (under 50K).  The disassembled engine looks 
like it may have had 150+K miles.  Besides excessive carbon build up, we 
have found that there are no steel shims between the valve springs and the 
aluminum head.  We have been waiting for an engine replacement now for 
three months, if you can belive it.  What I found interesting is that no 
compression tests were performed during any of the services.  The dealer 
technicians are relying on the computer generated codes to detect any 
malfunction.