About: http://webisa.webdatacommons.org/198379832

Property	Value
http://www.w3.org/1999/02/22-rdf-syntax-ns#type	http://www.w3.org/ns/prov#Entity
http://www.w3.org/ns/prov#value	Basically the clearance between the piston diameter and cylinder bore is a little more than it should be, and this allows the piston, which has a relatively short skirt, to rock slightly, causing the noise you are hearing.
http://www.w3.org/ns/prov#wasQuotedFrom	cadillacforums.com