2002 caddi north star engine knock

2002 CADILLAC DEVILLE
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UNIFSRN
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my 2002 caddi, north star engine has a knock when it is cold-dealer says $600.00 will make it go away-something about decarbonize engine, there such a thing??

thank u for any input
Oct 17, 2007 at 7:18 PM
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BUZZSAW
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[quote:c117c427aa="unifsrn"]my 2002 caddi, north star engine has a knock when it is cold-dealer says $600.00 will make it go away-something about decarbonize engine, there such a thing??

thank u for any input[/quote:c117c427aa]

yes let them do it
Oct 29, 2007 at 10:49 AM